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XC6403 Series
High Speed LDO Regulators, Low ESR Cap. Compatible, Voltage Detector Function
September 18, 2003 V8
! Low Power Consumption ! Dropout Voltage ! ! ! ! !
Maximum Output Current Highly Accurate VR Setting Output Voltage Range Detect Voltage Setting Range Low ESR capacitor compatible
: 35 A (TYP.) : 60mV @ 30mA : 200mV @ 100mA
! APPLICATIONS
" " " " " " "
Mobile phones, Cordless phones Wireless communication equipment Cameras, Video recorders Portable games Portable AV equipment Reference voltage Battery powered equipment
: more than 300mA (380mA limit) : 2% : 0.9V ~ 5.6V : 0.9V ~ 5.5V (VIN : >2.0V)
! GENERAL DESCRIPTION
The XC6403 series are highly precise, low noise, positive voltage low dropout regulators with built-in voltage detector. They are fabricated using Torex's CMOS process. Performance features of the series includes high ripple rejection and low dropout voltage, and the series features a voltage reference, an error amplifier, a current limiter and a phase compensation circuit plus a driver transistor. Detect voltage is selectable in 100mV increments within the range of 0.9V to 5.5V and the LDO output voltage is selectable within a range of 0.9V to 5.6V, also in 100mV increments. The series is also compatible with low ESR ceramic capacitors which give added output stability. This stability can be maintained even during load fluctuations due to the excellent transient response of the series. The current limiter's foldback circuit also operates as a short circuit protection for the output current limiter and the output pin. The series provides options to the user to select from a variety of circuit features, such as detector monitoring, detector output logic, CE and EN pin input logic, and internal pull-up / down resistance. The IC's internal regulator circuit can be placed in stand-by mode via the EN function (XC6403 A to C series). The whole IC can be put in to stand-by mode via the CE function with the XC6403D series (semicustom). In the stand-by mode, power consumption is greatly reduced. The XC6403 A and B series features the toggle operation function. The regulator output can be OFF when the XC6403B series detects voltage (semi-custom). The XC6403E series can monitor another power source by using the VSEN pin (semi-custom). The XC6403F series can delay the detector output: the delay time can be controlled by the use of an external capacitor (semi-custom).
! FEATURES
Maximum Output Current more than 300mA (380mA limit) Dropout Voltage Operating Voltage Range VR Setting Output Voltage Range 200mV (IROUT=100mA) 2.0V ~ 6.0V 0.9V ~ 5.6V (100mV step, 2%) Detect Voltage Setting Range 0.9V ~ 5.5V (100mV step, 2%) When monitoring VIN VR.VD Temperature Coefficient Low Power Consumption High Ripple Rejection Low Output Noise Ultra Small Packages more than 2.0V 100ppm/OC (TYP.) 35A (TYP.) 65dB (@10kHz) 30mVrms SOT-25 (SOT-23-5) SOT-89-5 USP-6B Operating Temperature Range Low ESR Capacitor Compatible - 40 ~ 85OC
! TYPICAL APPLICATION CIRCUITS
CL 1uF
1 2 3
VROUT VIN VSS EN/CE VDOUT
5
Rpull 220K CL 1uF
CL 1uF
1 2 3
VROUT VIN VSS VSEN VDOUT
5
Rpull 220K CL 1uF
CL 1uF
1 2 3
VROUT VIN VSS Cd VDOUT
5
Rpull 220K CL 1uF
4
4
4
Cd 0.01uF
XC6403A ~ D Series
XC6403E Series
XC6403F Series
Semiconductor Ltd.
Data Sheet
1
XC6403 Series
High Speed LDO Regulators, Low ESR Cap. Compatible, Voltage Detector Function ! PIN CONFIGURATION
VROUT 5 VDOUT 4
EN/CE VSEN/Cd
5
VDOUT
4
EN/CE VSEN/Cd 1 NC 2 VIN 3
1 2 3
6 VDOUT 5 VSS 4 VROUT
3 EN/CE VSEN/Cd SOT-25 (TOP VIEW)
1 VIN
2 VSS
VIN
VSS
VROUT
USP-6B (TOP VIEW)
SOT-89-5 (TOP VIEW)
! PIN ASSIGNMENT
SOT-25 1 2 3 3 3 3 4 5 PIN NUMBER USP-6B SOT-89-5 1 2 5 5 5 5 4 5 3 5 1 1 1 1 6 4 2 PIN NAME VIN VSS EN CE VSEN Cd VDOUT VROUT NC FUNCTION Power Input Ground VR ON / OFF Control ON / OFF Control VD Monitoring Delay Capacitor Connection VD Output VR Output No connection
! SELECTION GUIDE
1. TOGGLE FUNCTION, VD SELF-SATURATION AS OPTION TOGGLE FUNCTION (BUILT-IN) SERIES XC6403A XC6403B XC6403C ~ F VD with Toggle Function VD with Toggle Function and Self-Saturation VD with no Toggle Function
2. STAND-BY MODE FUNCTION AS OPTION SERIES STAND-BY MODE FUNCTION XC6403A ~ C XC6403D XC6403E, F VR with Stand-by mode function Chip Stand-by mode function No Stand-by mode function
3. CE / EN INPUT LOGIC, INTERNAL PULL-UP/DOWN AS OPTION (* : A ~ D Series) CE INPUT LOGIC SERIES XC6403 * A ~ D XC6403 * E ~ K XC6403 * L ~ P XC6403 * R ~ U 4. VD SENSE AS OPTION SERIES Active HIGH with pull down Active HIGH with no pull down Active LOW with pull up Active LOW with no pull up (* : A ~ D and F Series) VD SENSE PIN VIN VOUT VSEN
XC6403 * A, B, E, F, L, M, R, S, V, X XC6403 * C, D, H, K, N, P, T, U, Y, Z XC6403 E V ~ Z
5. VD OUTPUT LOGIC AS OPTION SERIES VD OUTPUT LOGIC FUNCTION XC6403A ~ F Detect L or Detect H
6. VD DELAY FUNCTION AS OPTION SERIES DELAY FUNCTION XC6403A ~ E XC6403F No Delay Delay time adjustable by connecting Cd
Semiconductor Ltd.
Data Sheet
2
XC6403 Series
High Speed LDO Regulators, Low ESR Cap. Compatible, Voltage Detector Function
! ORDERING INFORMATION XC6403 123456
PIN NUMBER Optional Functions : A : Toggle and EN Function (Preliminary *) B : Toggle, EN Function, D : USP-6B FUNCTION PIN NUMBER Packaging Types: FUNCTION
1
VD signal/VR OFF function (Preliminary *) C : EN Function D : CE Function E : VSEN Pin F : Cd Pin
5
M : SOT-25
P : SOT-89-5
2
Types : As in the chart below. Internally set sequential number relating to output voltage and detect voltage (refer to the chart on page 4. Taping Direction:
6
R: Embossed Tape, Standard feed
34
VR Setting Output Voltage Range : 0.9V ~ 5.6V Detect Voltage Setting Range : 0.9V ~ 5.5V 100mV step increments are available L : Embossed Tape, Reverse feed
PIN NUMBER : 2 Types
2
A B C D E F H K L M N P R S T U V X Y Z
EN / CE FUNCTION Function Function Function Function Function Function Function Function Function Function Function Function Function Function Function Function Nonfunctional Nonfunctional Nonfunctional Nonfunctional
EN / CE LOGIC Active HIGH Active HIGH Active HIGH Active HIGH Active HIGH Active HIGH Active HIGH Active HIGH Active LOW Active LOW Active LOW Active LOW Active LOW Active LOW Active LOW Active LOW -
PULL UP/DOWN RESISTANCE Pull-down Function Pull-down Function Pull-down Function Pull-down Function Nonfunctional Nonfunctional Nonfunctional Nonfunctional Pull-up Function Pull-up Function Pull-up Function Pull-up Function Nonfunctional Nonfunctional Nonfunctional Nonfunctional -
VD SENSE PIN VIN VIN VROUT VROUT VIN VIN VROUT VROUT VIN VIN VROUT VROUT VIN VIN VROUT VROUT VIN / VSEN VIN / VSEN VOUT / VSEN VOUT / VSEN
VD OUTPUT LOGIC Detect L Detect H Detect L Detect H Detect L Detect H Detect L Detect H
PIN NUMBER 1
A ~ D Series Detect L Detect H Detect L Detect H Detect L Detect H Detect L Detect H Detect L E & F Series Detect H Detect L F Series Detect H
* The XC6403A and XC6403B series are under development. For further detail, please ask your sales contacts.
Semiconductor Ltd.
Data Sheet
3
XC6403 Series
High Speed LDO Regulators, Low ESR Cap. Compatible, Voltage Detector Function
! ORDERING INFORMATION
# Pin Number
3, 4
Type
(80 ~ 99 : Standard voltage products) (34 : Hysteresis Range 3.0% (TYP.) for an error flag)
34
01 02 03 04 05 06 07 08 09 10 11 12 13 14 15 16 17 18 19 20
VROUT 1.80 1.80 1.60 1.80 3.00 1.80 1.80 1.80 3.00 2.80 1.80 3.00 1.80 1.80 1.80 2.50 1.80 2.80
VDOUT 2.40 2.90 1.80 2.00 3.30 2.40 2.90 2.00 3.30 3.10 1.70 4.20 3.00 3.00 2.40 2.90 2.30 3.40
34
21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39
VROUT 3.30 2.80
VDOUT 3.10 3.10
34
VROUT
VDOUT
34
80 81 82
VROUT 1.80 2.80 1.80 2.50 2.85 3.00 3.50 3.00 3.30
VDOUT 1.60 3.10 2.00 2.80 3.20 3.30 3.80 4.20 4.00
1.80 3.20
2.40 2.80
83 84 85 86 87 88
4.00 2.85 2.60 2.70 2.85
4.30 2.70 2.40 2.80 2.55
89 90 91 92 93 94 95 96 97 98 99
3.30
3.00
40
For the other voltages, please ask your sales contacts.
# Ordering Example (Standard Products) PRODUCT NAME PRODUCT DESCRIPTION VOLTAGE VROUT XC6403CH80MR XC6403CE81MR XC6403DE82MR XC6403DE83MR XC6403DE84MR XC6403DE85MR XC6403DE86MR XC6403FV87MR XC6403FV88MR EN function, Active HIGH, VROUT Sense, Detect L EN function, Active HIGH, VIN Sense, Detect L CE function, Active HIGH, VIN Sense, Detect L CE function, Active HIGH, VIN Sense, Detect L CE function, Active HIGH, VIN Sense, Detect L CE function, Active HIGH, VIN Sense, Detect L CE function, Active HIGH, VIN Sense, Detect L Cd function, VIN Sense, Detect L Cd function, VIN Sense, Detect L 1.80 2.80 1.80 2.50 2.85 3.00 3.50 3.00 3.30 VDOUT 1.60 3.10 2.00 2.80 3.20 3.30 3.80 4.20 4.00
Except for the standard products, minimum ordering quantity is 15K.
Semiconductor Ltd.
Data Sheet
4
XC6403 Series
High Speed LDO Regulators, Low ESR Cap. Compatible, Voltage Detector Function
! PACKAGING INFORMATION
# SOT-25
# SOT-89-5
# USP-6B
2.0 + 0.15 (0.45) 0.5+0.1 (0.05)
O
(0.27) 0.005+0.002 (0.27)
1
( 0.45)
1 2 3
6 5 4
1.8+0.15
(0.27)
45 O
(0.45) (0.45)
(0.125)
45O
45
O
45
A
A'
O
(0.65)+0.15 -0.05
1
0.7+0.03
5-0.2+0.05
3 2
4 5
00.1+0.03
0.2+0.05
1
6
1
1
1
1.0+0.1 0.25+0.1
.
0.25+0.1
1
0.5+0.1 0.5+0.1
1.6+0.15
(0.05) -0.005
+0.01
AAA AAA
Semiconductor Ltd.
Data Sheet
5
XC6403 Series
High Speed LDO Regulators, Low ESR Cap. Compatible, Voltage Detector Function
! ABSOLUTE MAXIMUM RATINGS
PARAMETER Input Voltage VR Output Current VR Output Voltage VD Output Current VD Output Voltage VCE / VSEN / Cd Pin Voltage Continuous Power Dissipation SOT-25 SOT-89-5 USP-6B Operating Temperature Range Storage Temperature Range Topr Tstg Pd SYMBOL VIN VRIOUT VROUT VDIOUT VDOUT VCE / VSEN / Cd 250 500 100 - 40 ~ + 85 - 55 ~ + 125
O O
RATINGS 7.0 700 VSS -0.3 ~ VIN +0.3 50 VSS -0.3 ~ 7.0 VSS -0.3 ~ VIN + 0.3
UNITS V mA V mA V V
mW C C
! ELECTRICAL CHARACTERISTICS XC6403 Series
PARAMETER VR Output Voltage (note 2, 3) VR Maximum Output Current (0.9 ~ 1.7V product) VR Maximum Output Current (1.8 ~ 5.3V product) VR Load Regulation VR Dropout Voltage (note 4) Supply Current (No Pull-up Resistor) VOLTAGE REGULATOR Supply Current (With Pull-up Resistor) VR Line Regulation Input Voltage VR Output Voltage Temperature Characteristics SYMBOL VROUT(E) IROUTMAX IROUTMAX VROUT Vdif1 Vdif2 CONDITIONS IROUT=30mA VIN = 3.1V VIN=3.1V @ VROUT<2.1V MIN x 0.98 150 300 15 E-1 E-2 35 50 TYP VROUT(T) MAX x 1.02 UNITS V mA mA mV mV mV A
Ta=25OC
CIRCUIT
1 1 1 1 1 1 2 2 1 O
VR Ripple Rejection Rate
1mA 4.75V ! VIN=5.75V+0.5Vp-pAC IROUT=50mA, f=10kHz IRlim IRlim IRshort VDF (E) VHYS VIN = 2.0V VIN = 3.0V VIN = 4.0V VIN = 5.0V VIN = 6.0V VDOUT = 0.5V VIN = 2.0V VIN = 3.0V VIN = 4.0V VIN = 5.0V VIN = 6.0V -40OC70
40 0.01 2.0 100
75 0.20 6.0
A %/V V ppm / C
1
65
dB
3
VR Current Limiter (1.8V or more) VR Current Limiter (1.7V or less) Short-Circuit Current VD Detect Voltage (note 7, 8) VD Hysteresis Range (note 7) VOLTAGE DETECTOR
300
380 380 50
mA mA mA V V
1 1 1 4 4
x 0.98 VDF (T) x 0.02
VD Supply Current
IDDVD
VDF (T) VDF (T) x 0.05 6.5 7.0 7.5 8.0 9.0 6.0 8.0 10.0 12.0 15.0 100
x 1.02 VDF (T) x 0.08 14.5 15.0 15.5 16.0 17.0
A
2
VD Output Current (note 9)
IDOUT
3.0 4.0 5.0 7.0 10.0
mA
5
VD Detect Voltage Temperature Characteristics
VDF / Topr VDF
ppm / OC
4
Semiconductor Ltd.
Data Sheet
6
XC6403 Series
High Speed LDO Regulators, Low ESR Cap. Compatible, Voltage Detector Function
! ELECTRICAL CHARACTERISTICS (Continued)
XC6403 Series
PARAMETER SWITCH (NO PULLUP RESISTOR) CE/EN "High" Level Voltage CE/EN "Low" Level Voltage CE/EN "High" Level Current CE/EN "Low" Level Current OPTION Delay Resistance SYMBOL VCE/EN H VCE/EN L ICE/EN H ICE/EN L Rdelay CONDITIONS MIN 1.60 VCE/EN=VIN=VROUT(T)+1.0V VIN=VROUT(T)+1.0V, VCE/EN=VSS VIN=6.0V, Cd=0V Delay Resistance=6.0V/Delay Current -0.10 -0.10 1.0 2.0 TYP MAX VIN 0.25 0.10 0.10 3.5 UNITS V V A A M Ta=25OC
CIRCUIT
1 1 2 2 6
(NOTE 1) Unless otherwise stated, VIN=VOUT(T)+1.0V (NOTE 2) VROUT(T)=Specified VR Output Voltage (NOTE 3) VOUT(E)=Actual VR Output Voltage (i.e. the VR output voltage when "VROUT(T)+1.0V" is provided at the VIN pin while maintaining a certain IROUT value). (NOTE 4) Vdif={VIN1(NOTE6)-VROUT1(NOTE5)} (NOTE 5) A voltage equal to 98% of the VR Output Voltage whenever a stabilized VROUT1=IROUT{VROUT(T)+1.0V} is input. (NOTE 6) VIN1=The Input Voltage when VOUT1, which appears as Input Voltage is gradually decreased. (NOTE 7) VDF (T) : Specified Detect Voltage value (NOTE 8) VDF (E) : Actual Detect Voltage value. Refer to the E-0 chart for VDF(T) values less than 1.5V. (NOTE 9) VD Output Current value of Detect 'L' type equal to current value during detection and that of Detect 'H' type equal to current value before detection.
Semiconductor Ltd.
Data Sheet
7
XC6403 Series
High Speed LDO Regulators, Low ESR Cap. Compatible, Voltage Detector Function ! ELECTRICAL CHARACTERISTICS (Continued)
XC6403 AA / AD / AE / AH Series PARAMETER
VR Output Voltage (note 2, 3) VR Maximum Output Current (0.9 ~ 1.7V product) VR Maximum Output Current (1.8 ~ 5.3V product) VR Load Regulation VR Dropout Voltage (note 4) Supply Current (AA / AD Series) VOLTAGE REGULATOR Supply Current (AE / AH Series) VR Line Regulation Input Voltage VR Output Voltage Temperature Characteristics Ta=25OC
SYMBOL
VROUT(E) IROUTMAX IROUTMAX VROUT Vdif1 Vdif2 IDD
CONDITIONS
IROUT=30mA VIN = 3.1V VIN=3.1V @ VROUT < 2.1V 1mAMIN
x 0.98 150 300
TYP
VROUT(T)
MAX
x 1.02
UNITS
V mA mA
CIRCUIT
1 1 1 1 1 1 2
15 E-1 E-2 40
50
mV mV mV A
75
IDD VROUT VIN VROUT VIN VROUT Topr VROUT
VIN=VEN=VROUT(T)+1.0V VROUT(T)+1.0V 4.75V ! VIN=5.75V+0.5Vp-pAC IROUT=50mA, f=10kHz VIN=3.1V @ VROUT < 2.1V VEN = VIN VIN=3.1V, VEN=VIN VIN=VROUT(T)+1.0V, VEN=VIN VIN=3.1V @ VROUT < 2.1V x 0.98 VDF (T) x 0.02 VIN = 2.0V VIN = 3.0V VIN = 4.0V VIN = 5.0V VIN = 6.0V VDOUT = 0.5V VIN = 2.0V VIN = 3.0V VIN = 4.0V VIN = 5.0V VIN = 6.0V -40OC35
70
A
2 1
0.01
0.20 6.0
%/V V ppm / OC
100
1
VR Ripple Rejection Rate
PSRR
65
dB
3
VR Current Limiter (1.8V or more) VR Current Limiter (1.7V or less) Short-circuit Current VD Detect Voltage (note 7, 8) VD Hysteresis Range (note 8)
IRlim IRlim IRshort VDF (E) VHYS
380 380 50 VDF (T) VDF (T) x 0.05 6.5 7.0 7.5 8.0 9.0 6.0 8.0 10.0 12.0 15.0 100 x 1.02 VDF (T) x 0.08 14.5 15.0 15.5 16.0 17.0
mA mA mA V V
1 1 1 4 4
VOLTAGE DETECTOR
VD Supply Current (note 9)
IDDVD
A
2
VD Output Current (note 10)
IDOUT
3.0 4.0 5.0 7.0 10.0
mA
5
VD Detect Voltage Temperature Characteristics
VDF / Topr VDF
ppm / OC
4
Semiconductor Ltd.
Data Sheet
8
XC6403 Series
High Speed LDO Regulators, Low ESR Cap. Compatible, Voltage Detector Function ! ELECTRICAL CHARACTERISTICS (Continued)
XC6403 AA / AD / AE / AH Series
PARAMETER SWITCH EN "High" Level Voltage EN "Low" Level Voltage EN "High" Level Current (AA / AD Series) EN "High" Level Current (AE /AH Series) SYMBOL CONDITIONS MIN TYP MAX UNITS Ta=25OC
CIRCUIT
VEN H VEN L IEN H IEN H VEN=VIN=VROUT(T)+1.0V VEN=VIN=VROUT(T)+1.0V
1.60
VIN 0.25 5.00 0.10
V V A A A
1 1 2 2 2
-0.10 -0.10
EN "Low" Level Current IEN L VIN=VROUT(T)+1.0V, VEN=VSS -0.10 0.10 (NOTE 1) Unless otherwise stated, VIN=VOUT(T)+1.0V (NOTE 2) VROUT(T)=Specified VR Output Voltage (NOTE 3) VOUT(E)=Actual VR Output Voltage (i.e. the VR output voltage when "VROUT(T)+1.0V" is provided at the VIN pin while maintaining a certain IROUT value). (NOTE 4) Vdif={VIN1(NOTE6)-VROUT1(NOTE5)} (NOTE 5) A voltage equal to 98% of the VR Output Voltage whenever a stabilized VROUT1=IROUT{VROUT(T)+1.0V} is input. (NOTE 6) VIN1=The Input Voltage when VOUT1, which appears as Input Voltage is gradually decreased. (NOTE 7) VDF (T) : Specified Detect Voltage value (NOTE 8) VDF (E) : Actual Detect Voltage value. Refer to the E-0 chart for VDF(T) values less than 1.5V. (NOTE 9) VD Supply Current = Supply Current when VEN=VSS (NOTE 10) VD Output Current = Sink Current during detection.
Semiconductor Ltd.
Data Sheet
9
XC6403 Series
High Speed LDO Regulators, Low ESR Cap. Compatible, Voltage Detector Function ! ELECTRICAL CHARACTERISTICS (Continued)
XC6403 CA / CD / CE / CH Series
PARAMETER VR Output Voltage (note 2, 3) VR Maximum Output Current (0.9 ~ 1.7V product) VR Maximum Output Current (1.8 ~ 5.3V product) VR Load Regulation VR Dropout Voltage (note 4) Supply Current (CA / CD Series) VOLTAGE REGULATOR Supply Current (CE / CH Series) VR Line Regulation Input Voltage VR Output Voltage Temperature Characteristics SYMBOL VROUT(E) IROUTMAX IROUTMAX VROUT Vdif1 Vdif2 IDD CONDITIONS IROUT=30mA VIN = 3.1V VIN=3.1V @ VROUT < 2.1V 1mACIRCUIT
1 1 1 1 1 1 2
75
IDD VROUT VIN VROUT VIN VROUT Topr VROUT
VIN=VEN=VROUT(T)+1.0V VROUT(T)+1.0V 4.75V ! VIN=5.75V+0.5Vp-pAC IROUT=50mA, f=10kHz VIN=3.1V @ VROUT < 2.1V VEN = VIN VIN=3.1V, VEN=VIN VIN=VROUT(T)+1.0V, VEN=VIN VIN=3.1V @ VROUT < 2.1V x 0.98 VDF (T) x 0.02 VIN = 2.0V VIN = 3.0V VIN = 4.0V VIN = 5.0V VIN = 6.0V VDOUT = 0.5V VIN = 2.0V VIN = 3.0V VIN = 4.0V VIN = 5.0V VIN = 6.0V -40OC35
70
A
2 1
0.01
0.20 6.0
%/V V ppm / OC
100
1
VR Ripple Rejection Rate
PSRR
65
dB
3
VR Current Limiter (1.8V or more) VR Current Limiter (1.7V or less) Short-Circuit Current VD Detect Voltage (note 7, 8) VD Hysteresis Range (note 8)
IRlim IRlim IRshort VDF (E) VHYS
380 380 50 VDF (T) VDF (T) x 0.05 6.5 7.0 7.5 8.0 9.0 6.0 8.0 10.0 12.0 15.0 100 x 1.02 VDF (T) x 0.08 14.5 15.0 15.5 16.0 17.0
mA mA mA V V
1 1 1 4 4
VOLTAGE DETECTOR
VD Supply Current (note 9)
IDDVD
A
2
VD Output Current (note 10)
IDOUT
3.0 4.0 5.0 7.0 10.0
mA
5
VD Detect Voltage Temperature Characteristics
VDF / Topr VDF
ppm / OC
4
Semiconductor Ltd.
Data Sheet
10
XC6403 Series
High Speed LDO Regulators, Low ESR Cap. Compatible, Voltage Detector Function
! ELECTRICAL CHARACTERISTICS (Continued)
XC6403 CA / CD / CE / CH Series
PARAMETER SWITCH EN "High" Level Voltage EN "Low" Level Voltage EN "High" Level Current (CA / CD Series) EN "High" Level Current (CE /CH Series) SYMBOL CONDITIONS MIN TYP MAX UNITS Ta=25OC
CIRCUIT
VEN H VEN L IEN H IEN H VEN=VIN=VROUT(T)+1.0V VEN=VIN=VROUT(T)+1.0V
1.6
VIN 0.25 5.00 0.10
V V A A A
1 1 2 2 2
-0.10 -0.10
EN "Low" Level Current IEN L VIN=VROUT(T)+1.0V, VEN=VSS -0.10 0.10 (NOTE 1) Unless otherwise stated, VIN=VOUT(T)+1.0V (NOTE 2) VROUT(T)=Specified VR Output Voltage (NOTE 3) VOUT(E)=Actual VR Output Voltage (i.e. the VR output voltage when "VROUT(T)+1.0V" is provided at the VIN pin while maintaining a certain IROUT value). (NOTE 4) Vdif={VIN1(NOTE6)-VROUT1(NOTE5)} (NOTE 5) A voltage equal to 98% of the VR Output Voltage whenever a stabilized VROUT1=IROUT{VROUT(T)+1.0V} is input. (NOTE 6) VIN1=The Input Voltage when VOUT1, which appears as Input Voltage is gradually decreased. (NOTE 7) VDF (T) : Specified Detect Voltage value (NOTE 8) VDF (E) : Actual Detect Voltage value. Refer to the E-0 chart for VDF(T) values less than 1.5V. (NOTE 9) VD Supply Current = Supply Current when VEN=VSS (NOTE 10) VD Output Current = Sink Current during detection.
Semiconductor Ltd.
Data Sheet
11
XC6403 Series
High Speed LDO Regulators, Low ESR Cap. Compatible, Voltage Detector Function ! ELECTRICAL CHARACTERISTICS (Continued)
XC6403 DA / DD / DE / DH Series
PARAMETER VR Output Voltage (note 2, 3) VR Maximum Output Current (0.9 ~ 1.7V product) VR Maximum Output Current (1.8 ~ 5.3V product) VR Load Regulation VR Dropout Voltage (note 4) Supply Current (DA / DD Series) VOLTAGE REGULATOR Supply Current (DE / DH Series) Stand-by Current (DA / DD / DE / DH Series) VR Line Regulation Input Voltage VR Output Voltage Temperature Characteristics SYMBOL VROUT(E) IROUTMAX IROUTMAX VROUT Vdif1 Vdif2 IDD CONDITIONS IROUT=30mA VIN = 3.1V VIN=3.1V @ VROUT < 2.1V 1mACIRCUIT
1 1 1 1 1 1 2 2 2 1 1
75
IDD IDD VROUT VIN VROUT VIN VROUT Topr VROUT
VIN=VCE=VROUT(T)+1.0V VIN=VROUT(T)+1.0V, VCE=VSS VROUT(T)+1.0V 4.75V ! VIN=5.75V+0.5Vp-pAC IROUT=50mA, f=10kHz VIN=3.1V @ VROUT < 2.1V VCE = VIN VIN=3.1V, VCE=VIN VIN=VROUT(T)+1.0V, VCE=VIN VIN=3.1V @ VROUT < 2.1V x 0.98 VDF (T) x 0.02 VDOUT = 0.5V VIN = 2.0V VIN = 3.0V VIN = 4.0V VIN = 5.0V VIN = 6.0V 3.0 4.0 5.0 7.0 10.0
35 0.01 0.01
70 0.10 0.20 6.0
A %/V %/V V ppm / OC
100
VR Ripple Rejection Rate
PSRR
65
dB
3
VR Current Limiter (1.8V or more) VR Current Limiter (1.7V or less) Short-Circuit Current VD Detect Voltage (note 7, 8) VOLTAGE DETECTOR VD Hysteresis Range (note 8)
IRlim IRlim IRshort VDF (E) VHYS
300
380 380 50 VDF (T) VDF (T) x 0.05 6.0 8.0 10.0 12.0 15.0 x 1.02 VDF (T) x 0.08
mA mA mA V V
1 1 1 4 4
VD Output Current (note 9)
IDOUT
mA
5
VD Detect Voltage VDF / -40OCppm / OC V V A A A
4 1 1 2 2 2
Semiconductor Ltd.
Data Sheet
12
XC6403 Series
High Speed LDO Regulators, Low ESR Cap. Compatible, Voltage Detector Function ! ELECTRICAL CHARACTERISTICS (Continued)
XC6403 EV / EX Series
PARAMETER VR Output Voltage VR Maximum Output Current (0.9 ~ 1.7V product) VR Maximum Output Current (1.8 ~ 5.3V product) VR Load Regulation VR Dropout Voltage Supply Current (EV / EX Series) VR Line Regulation Input Voltage VR Output Voltage Temperature Characteristics SYMBOL VROUT(E) IROUTMAX IROUTMAX VROUT Vdif1 Vdif2 IDD VROUT VIN VROUT VIN VROUT Topr VROUT CONDITIONS IROUT=30mA VIN = 3.1V VIN=3.1V @ VROUT < 2.1V 1mA 4.75V ! VIN=5.75V+0.5Vp-pAC IROUT=50mA, f=10kHz VIN=3.1V @ VROUT < 2.1V VIN=3.1V VIN=VROUT(T)+1.0V, VIN=3.1V @ VROUT < 2.1V x 0.98 VDF (T) x 0.02 VDOUT = 0.5V VIN = 2.0V VIN = 3.0V VIN = 4.0V VIN = 5.0V VIN = 6.0V 3.0 4.0 5.0 7.0 10.0 300 100 MIN x 0.98 150 300 15 E-1 E-2 35 50 TYP VROUT(T) MAX x 1.02 UNITS V mA mA mV mV mV A Ta=25OC
CIRCUIT
1 1 1 1 1 1 2 1
VOLTAGE REGULATOR
70
0.01
0.20 6.0
%/V V ppm / OC
1
Ripple Rejection Rate
PSRR
65
dB
3
VR Current Limiter (1.8V or more) VR Current Limiter (1.7V or less) Short-Circuit Current VD Detect Voltage VOLTAGE DETECTOR VD Hysteresis Range
IRlim IRlim IRshort VDF (E) VHYS
380 380 50 VDF (T) VDF (T) x 0.05 6.0 8.0 10.0 12.0 15.0 x 1.02 VDF (T) x 0.08
mA mA mA V V
1 1 1 4 4
VD Output Current (note 9)
IDOUT
mA
5
VDF / -40OCppm / OC
4
Semiconductor Ltd.
Data Sheet
13
XC6403 Series
High Speed LDO Regulators, Low ESR Cap. Compatible, Voltage Detector Function ! ELECTRICAL CHARACTERISTICS (Continued)
XC6403 FV / FX / FY / FZ Series
PARAMETER VR Output Voltage (note 2, 3) VR Maximum Output Current (0.9 ~ 1.7V product) VR Maximum Output Current (1.8 ~ 5.3V product) VR Load Regulation VR Dropout Voltage (note 4) Supply Current (FV / FX / FY / FZ Series) VR Line Regulation Input Voltage VR Output Voltage Temperature Characteristics SYMBOL VROUT(E) IROUTMAX IROUTMAX VROUT Vdif1 Vdif2 IDD VROUT VIN VROUT VIN VROUT CONDITIONS IROUT=30mA VIN = 3.1V VIN=3.1V @ VROUT < 2.1V 1mACIRCUIT
1 1 1 1 1 1 2 1
VOLTAGE REGULATOR
70
0.01
0.20 6.0
%/V V ppm / OC
Ripple Rejection Rate
IROUT=30mA -40OC 4.75V ! VIN=5.75V+0.5Vp-pAC IROUT=50mA, f=10kHz IRlim IRlim IRshort VDF (E) VHYS VDOUT = 0.5V VIN = 2.0V VIN = 3.0V VIN = 4.0V VIN = 5.0V VIN = 6.0V -40OCDelay Resistance=6.0V/Delay Current
1
65
dB
3
VR Current Limiter (1.8V or more) VR Current Limiter (1.7V or less) Short-Circuit Current VD Detect Voltage (note 7, 8) VOLTAGE DETECTOR VD Hysteresis Range (note 8)
VIN=3.1V @ VROUT < 2.1V VIN=3.1V VIN=VROUT(T)+1.0V, VIN=3.1V @ VROUT < 2.1V
300
380 380 50
mA mA mA x 1.02 VDF (T) x 0.08 V V
1 1 1 4 4
x 0.98 VDF (T) x 0.02 3.0 4.0 5.0 7.0 10.0
VDF (T) VDF (T) x 0.05 6.0 8.0 10.0 12.0 15.0 100
VD Output Current (note 9)
IDOUT
mA
5
VD Detect Voltage Temperature Characteristics Delay Resistance
VDF / Topr VDF Rdelay
ppm / OC 3.5 M
4 6
1.0
2.0
(NOTE 1) Unless otherwise stated, VIN=VOUT(T)+1.0V (NOTE 2) VROUT(T)=Specified VR Output Voltage (NOTE 3) VOUT(E)=Actual VR Output Voltage (i.e. the VR output voltage when "VROUT(T)+1.0V" is provided at the VIN pin while maintaining a certain IROUT value). (NOTE 4) Vdif={VIN1(NOTE6)-VROUT1(NOTE5)} (NOTE 5) A voltage equal to 98% of the VR Output Voltage whenever a stabilized VROUT1=IROUT{VROUT(T)+1.0V} is input. (NOTE 6) VIN1=The Input Voltage when VOUT1, which appears as Input Voltage is gradually decreased. (NOTE 7) VDF (T) : Specified Detect Voltage value (NOTE 8) VDF (E) : Actual Detect Voltage value. Refer to the E-0 chart for VDF(T) values less than 1.5V. (NOTE 9) VD Supply Current = Sink Current during detection.
Semiconductor Ltd.
Data Sheet
14
XC6403 Series
High Speed LDO Regulators, Low ESR Cap. Compatible, Voltage Detector Function
! VR DROPOUT VOLTAGE
SYMBOL PARAMETER OUTPUT VOLTAGE DETECT VOLTAGE
SPECIFIED DETECT VOLTAGE OUTPUT VOLTAGE
E-0
E-1 DROPOUT VOLTAGE 1 (mV) (IOUT=30mA) Ta=25OC MAX. 0.930 1.030 1.130 1.230 1.330 1.430 1.530 1.632 1.732 1.836 1.938 2.040 2.142 2.244 2.346 2.448 2.550 2.652 2.754 2.856 2.958 3.060 3.162 3.264 3.366 3.468 3.570 3.672 3.774 3.876 3.978 4.080 4.182 4.284 4.386 4.488 4.590 4.692 4.794 4.896 4.998 5.100 5.202 5.304 5.406 5.508 5.610 5.712 Vdif1 TYP. 1050 1000 900 800 700 600 500 400 300 200 120 80 80 80 80 80 70 70 70 70 70 60 60 60 60 60 60 60 60 60 60 60 60 60 60 60 60 60 60 60 60 50 50 50 50 50 50 50 Vdif1 MAX. 1100 1100 1000 900 800 700 600 500 400 300 150 120 120 120 120 120 100 100 100 100 100 90 90 90 90 90 90 90 90 90 90 80 80 80 80 80 80 80 80 80 80 70 70 70 70 70 70 70 Vdif2 TYP. 1150 1050 950 850 750 650 550 500 400 300 280 240 240 240 240 240 220 220 220 220 220 200 200 200 200 200 200 200 200 200 200 180 180 180 180 180 180 180 180 180 180 160 160 160 160 160 160 160
E-1 DROPOUT VOLTAGE 2 (mV) (IOUT=100mA) Ta=25OC Vdif2 MAX. 1200 1200 1100 1000 900 800 700 600 500 400 380 350 330 330 310 310 290 290 290 270 270 270 250 250 250 250 250 250 250 250 250 230 230 230 230 230 230 230 230 230 230 210 210 210 210 210 210 210
VROUT(T) VDF(T) 0.90 1.00 1.10 1.20 1.30 1.40 1.50 1.60 1.70 1.80 1.90 2.00 2.10 2.20 2.30 2.40 2.50 2.60 2.70 2.80 2.90 3.00 3.10 3.20 3.30 3.40 3.50 3.60 3.70 3.80 3.90 4.00 4.10 4.20 4.30 4.40 4.50 4.60 4.70 4.80 4.90 5.00 5.10 5.20 5.30 5.40 5.50 5.60
(V) VROUT / VDF MIN. 0.870 0.970 1.070 1.170 1.270 1.370 1.470 1.568 1.666 1.764 1.862 1.960 2.058 2.156 2.254 2.352 2.450 2.548 2.646 2.744 2.842 2.940 3.038 3.136 3.234 3.332 3.430 3.528 3.626 3.724 3.822 3.920 4.018 4.116 4.214 4.312 4.410 4.508 4.606 4.704 4.802 4.900 4.998 5.096 5.194 5.292 5.390 5.488
Semiconductor Ltd.
Data Sheet
15
XC6403 Series
High Speed LDO Regulators, Low ESR Cap. Compatible, Voltage Detector Function
! TEST CIRCUITS
# Circuit 1 XC6403A ~ C Series
VIN
A
VIN
VROUT CIN=1uF (ceramic) VSS EN CL=**uF (ceramic)
A
V
VDOUT
V V
RL
XC6403D Series
VIN
A
VIN
CIN=1uF (ceramic)
VROUT VSS VDOUT VSEN CL=**uF (ceramic)
A
V
RL
XC6403E Series
VIN
A
VIN
CIN=1uF (ceramic)
VROUT VSS CE VDOUT CL=**uF (ceramic)
A
V V
XC6403F Series
VIN
V
RL
A
VIN
CIN=1uF (ceramic) VSS Cd
VROUT
A
CL=**uF (ceramic)
V
VDOUT
RL
Output Capacitor Corresponding Chart
VROUT CL 0.9 ~1.2V more than 4.7F 1.3 ~ 1.7V more than 2.2F 1.8V ~ 5.6V more than 1.0F
Semiconductor Ltd.
Data Sheet
16
XC6403 Series
High Speed LDO Regulators, Low ESR Cap. Compatible, Voltage Detector Function
! TEST CIRCUITS (Continued)
# Circuit 2 XC6403A ~ C Series
VIN
A
CIN=1uF (ceramic) VIN VSS EN
VROUT
VDOUT
A
XC6403D Series
VIN
A
CIN=1uF (ceramic) VIN VSS CE
VROUT
VDOUT
A
XC6403E Series
VIN
A
VIN
VROUT CIN=1uF (ceramic) VSS VDOUT VSEN
XC6403F Series
VIN
A
VIN
VROUT CIN=1uF (ceramic) VSS VDOUT Cd
Semiconductor Ltd.
Data Sheet
17
XC6403 Series
High Speed LDO Regulators, Low ESR Cap. Compatible, Voltage Detector Function
! TEST CIRCUITS (Continued)
# Circuit 3 XC6403A ~ C Series
VROUT 1.25V VIN={2.25V}VDC +0.5Vp-pAC VIN={VROUT+1.0V}VDC +0.5Vp-pAC VROUT 4.75V VIN={5.75V}VDC +0.5Vp-pAC
VIN VROUT CL=**uF (ceramic) VDOUT
~
V
VSS EN
V ~
IROUT=50mA
XC6403D Series
VROUT 1.25V VIN={2.25V}VDC +0.5Vp-pAC VIN={VROUT+1.0V}VDC +0.5Vp-pAC VROUT 4.75V VIN={5.75V}VDC +0.5Vp-pAC
VIN VROUT VSS CL=**uF (ceramic) VDOUT
V ~
CE
V ~
IROUT=50mA
XC6403E Series
VROUT 1.25V VIN={2.25V}VDC +0.5Vp-pAC VIN={VROUT+1.0V}VDC +0.5Vp-pAC VROUT 4.75V VIN={5.75V}VDC +0.5Vp-pAC
VIN VROUT VSS CL=**uF (ceramic) VDOUT VSEN
V ~
V ~
IROUT=50mA
XC6403F Series
VROUT 0.9V VIN={2.0V}VDC +0.5Vp-pAC VIN={VROUT+1.0V}VDC +0.5Vp-pAC VROUT 4.75V VIN={5.75V}VDC +0.5Vp-pAC
VIN VROUT VSS Cd VDOUT CL=**uF (ceramic)
V ~
V ~
IROUT=50mA
Output Capacitor Corresponding Chart
VROUT CL 0.9 ~1.2V more than 4.7F 1.3 ~ 1.7V more than 2.2F 1.8 ~ 5.6V more than 1.0F
Semiconductor Ltd.
Data Sheet
18
XC6403 Series
High Speed LDO Regulators, Low ESR Cap. Compatible, Voltage Detector Function
! TEST CIRCUITS (Continued)
# Circuit 4 XC6403A ~ C Series [VD Sense, VIN type] [VD Sense, VROUT type]
VIN VROUT CL=1uF (ceramic) VIN VSS EN VDOUT 100k
VIN CL=1uF (ceramic)
VIN VROUT VSS EN VDOUT 100k
V
XC6403D Series [VD Sense, VIN type] [VD Sense, VROUT type]
V
VIN VROUT CL=1uF (ceramic) VIN VSS CE VDOUT 100k VIN CL=1uF (ceramic)
VIN VROUT VSS EN VDOUT 100k
V
V
XC6403E Series
VIN VROUT CL=1uF (ceramic) VIN VSS VDOUT VSEN 100k
V
XC6403F Series [VD Sense, VIN type]
VIN VROUT CL=1uF (ceramic) VIN Cd VSS VDOUT CL=1uF (ceramic) VSS VDOUT Cd VDS
[VD Sense, VROUT type]
VIN VROUT
A
VIN
A
VDS
Semiconductor Ltd.
Data Sheet
19
XC6403 Series
High Speed LDO Regulators, Low ESR Cap. Compatible, Voltage Detector Function
! TEST CIRCUITS (Continued)
# Circuit 5 XC6403A ~ C Series [VD Sense, VIN type]
VIN VROUT CL=1uF (ceramic) VIN EN VSS VDOUT CL=1uF (ceramic) VSS VDOUT EN VDS
[VD Sense, VROUT type]
VIN VROUT
A
VIN
A
VDS
XC6403D Series [VD Sense, VIN type]
VIN VROUT CL=1uF (ceramic) VIN CE VSS VDOUT CL=1uF (ceramic) VSS VDOUT CE VDS
[VD Sense, VROUT type]
VIN VROUT
A
VIN
A
VDS
XC6403E Series
VIN VROUT CL=1uF (ceramic) VIN VSS VDOUT VSEN
A
VDS
XC6403F Series [VD Sense, VIN type]
VIN VROUT CL=1uF (ceramic) VIN Cd VSS VDOUT CL=1uF (ceramic) VSS VDOUT Cd VDS
[VD Sense, VROUT type]
VIN VROUT
A
VIN
A
VDS
Semiconductor Ltd.
Data Sheet
20
XC6403 Series
High Speed LDO Regulators, Low ESR Cap. Compatible, Voltage Detector Function
! TEST CIRCUITS (Continued)
# Circuit 6 XC6403F Series [VD Sense, VIN type]
VIN VROUT CL=1uF (ceramic) VIN VSS VDOUT
A
Cd
[VD Sense, VROUT type]
VIN VROUT CL=1uF (ceramic) VIN VSS VDOUT
A
Cd
Semiconductor Ltd.
Data Sheet
21
XC6403 Series
High Speed LDO Regulators, Low ESR Cap. Compatible, Voltage Detector Function ! BLOCK DIAGRAMS
Optional:
Active HIGH with Pull-down R Active HIGH with no Pull-down R Active LOW with Pull-up R Active LOW with no Pull-up R
toggle FF
VIN
Optional:
VR circuit
Current Limit
EN
ON / OFF Control
T R
Q
VIN SENSE VROUT SENSE
1 Shot Pulse
Power ON Clear for FF
VROUT
R2 R1
Error Amp. CFB
Voltage Reference
Optional (B Series)
VDOUT
Optional:
Detect H Detect L Comp. VD
R4 R3
VSS
XC6403A, B Series
VIN EN / CE
Optional:
Active HIGH with Pull-down R Active HIGH with no Pull-down R Active LOW with Pull-up R Active LOW with no Pull-up R
ON / OFF Control
VR circuit (C Series) each circuit (D Series)
Current Limit
Optional:
VIN SENSE VROUT SENSE
Error Amp. CFB
Voltage Reference
VROUT
R2 R1
VDOUT
Optional:
Detect H Detect L Comp. VD
R4 R3
VSS
XC6403C, D Series
Semiconductor Ltd.
Data Sheet
22
XC6403 Series
High Speed LDO Regulators, Low ESR Cap. Compatible, Voltage Detector Function
! BLOCK DIAGRAMS (Continued)
VIN VSEN
Current Limit
Error Amp. CFB
Voltage Reference
VROUT
R2 R1
VDOUT
Optional:
Detect H Detect L Comp. VD
R4 R3
VSS
XC6403E Series
VIN
Optional:
Current Limit
VIN SENSE VROUT SENSE
Rdelay Error Amp.
VROUT
CFB
Voltage Reference
R2 R1
Rdelay
VDOUT
Optional:
Detect H Detect L Comp. VD
R4 R3
VSS
XC6403F Series
Semiconductor Ltd.
Data Sheet
23
XC6403 Series
High Speed LDO Regulators, Low ESR Cap. Compatible, Voltage Detector Function
! OPERATIONAL EXPLANATION
The voltage, divided by resistors R1 & R2 which are connected to the VROUT pin is compared with the internal reference voltage by the error amplifier. The P-Channel MOSFET, which is connected to the VROUT pin, is then driven by the subsequent output signal. The output voltage at the VROUT pin is controlled & stabilized by negative feedback. The current limit circuit and short circuit protection operate in relation to the level of output current. Further, the voltage regulator's internal circuitry can be shutdown via the EN or CE pin's signal. XC6403 series> The series' detector function monitors the voltage divided by resistors R3 & R4 which are connected to the VROUT pin or the VIN pin or the VSEN pin, as well as monitoring the voltage of the internal reference voltage source via the comparator. The VDSEN pin has options (please refer to the Selection Guide, item 4 on page 2). A 'High' or 'Low' signal level can be output from the VDOUT pin when the VD pin voltage level goes below the detect voltage. The VD output logic has options (please refer to the Selection Guide, item 5 on page 2). As VDOUT is an open-drain N-channel output, a pull-up resistor of about 220K is needed to achieve a voltage output. Because of hysteresis at the detector function, output at the VDOUT pin will invert when the detect voltage level increases above the release voltage (105% of the detect voltage). Even when the XC6403A, B, C, series are in stand-by mode, the voltage detector function operates and the output voltage at VDOUT will output according to the voltage level at VDSENSE voltage. For the XC6403A, B, C type, in stand-by, if a voltage of the recovery voltage is present at the VROUT pin (from another power source), the VDOUT pin will be high impedance mode, and the pull up voltage will be output at VDOUT. By connecting the Cdelay pin to a capacitor (Cd), the XC6403F series can apply a delay time to VDOUT voltage when releasing voltage. The delay time can be calculated from the internal resistance, Rdelay (2M fixed) and the value of Cd as per the following equation.
Delay Time = Cdelay x Rdelay x 0.7
Delay Time Cdelay 0.01 F 0.022 F 0.047 F 0.1 F 0.22 F 0.47 F 1 F Rdelay standard : 1.0 ~ 3.5M DELAY TIME (TYP.) 14 msec 30.8 msec 65.8 msec 140 msec 308 msec 658 msec 1400 msec TYP : 2.0M DELAY TIME (TYP.) 7.0 ~ 24.5 msec 15.4 ~ 53.9 msec 32.9 ~ 115.15 msec 70.0 ~ 245.0 msec 154.0 ~ 539.0 msec 329.0 ~ 1151.5 msec 700.0 ~ 2450.0 msec
With the XC6403 series regulator, a stable output voltage is achievable even if low ESR capacitors are used, as a phase compensation circuit is built-in to the regulator. In order to ensure the effectiveness of the phase compensation, we suggest that an output capacitor (CL) be connected as close as possible, between the output pin (VROUT) and the VSS pin. Please use an output capacitor (CL) with a capacitance, based on the chart below. We also suggest an input capacitor (CIN) of 1F : this should be connected between VIN and VSS in order to stabilize input power source. Output Capacitor VROUT CL 0.9 ~1.2V more than 4.7F 1.3 ~ 1.7V more than 2.2F 1.8 ~ 5.6V more than 1.0F
The XC6403 series regulator offers a combination of current limit and circuit protection by means of a built-in fixed current limiter circuit and a foldback circuit. When the load current reaches the current limit level, the fixed current limiter circuit operates and output voltage drops. As a result of this drop in output voltage, the foldback circuit operates, the output voltage drops further and output current decreases. When the output pin is shorted, a current of about 50mA flows.
Semiconductor Ltd.
Data Sheet
24
XC6403 Series
High Speed LDO Regulators, Low ESR Cap. Compatible, Voltage Detector Function
! OPERATIONAL EXPLANATION (Continued)
The IC's internal regulator circuitry can be shut down via the signal from the EN pin with the XC6403A, B, C series. In shutdown mode, output at the VROUT pin will be pulled down to the VSS level via R1 & R2. The whole IC's circuitry can be shut down via CE pin with the XC6403D series and power consumption can be reduced to around 0 A. While the voltage detector is in shutdown mode, the voltage detector output is in a post-detection state. When choosing Detect L, input current can be set by using the following formula.
Input Current = VIN voltage / Pull Up Resistance
In stand-by mode, the above input current can be reduced by connecting a pull-up resistor between VROUT and VDOUT. Note that as the XC6403*E to K types of the XC6403A to D series are 'Active HIGH / No Pull Down' and XC6403*R to U types of the XC6403A to D series are 'Active LOW / No Pull Up', operations will become unstable with the CE pin open (See the chart below). SERIES XC6403 * A ~ D XC6403 * E ~ K XC6403 * L ~ P XC6403 * R ~ U CE INPUT LOGIC Active HIGH with pull down Active HIGH with no pull down Active LOW with pull up Active LOW with no pull up ( * A ~ D Series)
We suggest that you use this IC with either a VIN voltage or a VSS voltage input at the EN or CE pin. If this IC is used with the correct specifications for the EN or CE pin, the IC will operate normally. However, supply current may increase as a result of through current in the IC's internal circuitry if a voltage other than VIN or VSS is applied.
The XC6403 A and B series have a built-in toggle ON/OFF switch which repeats an on/off operation via the EN pin's leading edge signal when the EN logic is Active HIGH, and via the EN pin's falling edge signal when the EN logic is Active LOW (Please also refer the figure below). The EN input signal duration should be over 500nsec. If the EN input signal is less than 500nsec, it is possible that the circuit fails to respond and the toggle function does not operate. To operate the toggle function properly when the EN pin voltage noise is large, a RC filter should be used to reduce the noise in the signal to the EN pin. In the case where input delay time is required, it is possible to set the time constant by connecting an RC network to the EN pin.
CIN 1F 1.5k VIN 0.1F
VIN VROUT VSS EN
Rpull 220k
VDOUT
CL 1F
Internal Circuit - Response time approx.10sec VROUT
GND VROUT VIN
GND EN pin signal more than 500nsec
EN Logic Active "HIGH"
Semiconductor Ltd.
Data Sheet
25
XC6403 Series
High Speed LDO Regulators, Low ESR Cap. Compatible, Voltage Detector Function
! OPERATIONAL EXPLANATION (Continued)
(Continued) For the XC6403B series, there are two types of toggle selection; one is a T-type flip-flop (T-FF) used for toggle operation which can be reset internally by a signal directly from the voltage detector (VIN Sense type only. See also the Selection Guide on page 2). The other type is where the reset is applied internally through a one shot pulse circuit (VIN, VROUT type only. See also the Selection Guide on page 2). The type, which applies the reset directly via the signal from the voltage detector function, applies the voltage detector comparator's output signal (reset signal) to the reset of T-FF reset, and turns the VR output OFF when the input voltage decreases below the detect voltage due to battery consumption, etc.. In order to return the VR output, apply a voltage larger than the release voltage to VIN and input a toggle signal to the T-FF. In the case where input voltage is below the release voltage, the VR output does not return even though the toggle signal is input into the T-FF. The type which applies the reset signal to the T-FF internally via a one-shot pulse circuit changes the voltage detector comparator output signal to a oneshot signal internally. Like the type which applies the reset directly via the signal from voltage detector function, this type also applies the reset to the TFF and sets the VR output to OFF when the input voltage (VIN Sense type) and output voltage (VROUT Sense type) drop below the detect voltage level. This type can return the VR output by inputting a toggle signal, even when the Sense pin voltage (VIN or VROUT pin voltage) is below the release voltage. Please refer to the block diagram below and the timing chart on the following page. Please choose the option suitable to the application.
A
D
toggle FF
T R Q
VIN
VR circuit
EN
ON/OFF control
Toggle Signal T-FF Reset Signal
Current limit B
1 Shot
C Pulse
E
Optional
Optional
Power ON Clear for FF
Error Amp. CFB
R2 R1
VROUT
Voltage Reference F
VDOUT
Comp. VD
R4 R3
VSS
Block Diagram for XC6403B series Timing Chart
Semiconductor Ltd.
Data Sheet
26
XC6403 Series
High Speed LDO Regulators, Low ESR Cap. Compatible, Voltage Detector Function
! TIMING CHART
" Using the VD output level signal as the reset signal of T-FF (VD Sense = VIN PIN)
Lithium Ion 4.2V
Voltage
Release Voltage Detect Voltage
A
# VIN PIN
VSS Intrenal IC Response Time About 20usec VROUT Voltage VSS Internal IC Response Time About 20usec
Internal IC Response TIme About 20usec
E#
VROUT PIN
VIN
D B F
# Toggle Signal
VSS
# T-FF Reset Signal
Reset Signal (VD Comp Output Signal)
# VDOUT PIN Voltage Detect L
VSS
Pull-up
" Changing the VD output level signal into a one shot pulse to use T-FF as the reset signal (VD Sense = VIN PIN)
Lithium Ion 4.2V Voltage
Release Voltage Detect Voltage
A
# VIN PIN
VSS Intrenal IC Response Time About 20usec Internal IC Response Time About 20usec Internal IC Response Time About 20usec
Internal IC Response TIme About 20usec
E
VROUT Voltage
# VROUT PIN
VSS
VIN
D C
# Toggle Signal
VSS
.
# T-FF Reset Signal Reset Signal (1 Shot Pulse)
Pull-up Voltage
F
# VDOUT PIN Detect L
VSS
" Changing the VD output level signal into a one shot pulse to use T-FF as the reset signal (VD Sense = VROUT PIN)
Lithium Ion Voltage 4.2V
A
# VIN PIN
VSS Intrenal IC Response Time VROUT Voltage About 20usec Internal IC Response Time About 20u sec Internal IC Response TIme About 20u sec Internal IC Response TIme About 20u sec
E
# VROUT PIN
VSS
Release Voltage Detect Voltage
D C F
# Toggle Signal
VIN
VSS
# T-FF Reset Signal Reset Signal ( 1 Shot Pulse)
Pull-up Voltage
# VDOUT PIN Detect L VSS
The circled letters correspond to those shown on the block diagram on page 26.
Semiconductor Ltd.
Data Sheet
27
XC6403 Series
High Speed LDO Regulators, Low ESR Cap. Compatible, Voltage Detector Function
!
NOTES ON USE
1. Please use this IC within the stated absolute maximum ratings. The IC is liable to malfunction should the ratings be exceeded. 2. Where wiring impedance is high, operations may become unstable due to noise and/or phase lag depending on output current. Please strengthen VIN and VSS wiring in particular. 3. Please wire the input capacitor (CIN) and the output capacitor (CL) as close to the IC as possible. Should rapid input fluctuation or load fluctuation occur, please increase the capacitor value such as CIN or CL to stabilize the operation.
Semiconductor Ltd.
Data Sheet
28

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