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ETR0324-005
GENERAL DESCRIPTION
The XB1085 is a series of low dropout positive voltage regulators with a high output current capacity of 3.0A . Stable output can be maintained by using 10 F (CIN) and 22 F (CL) of tantalum capacitors. The fixed voltage types (XB1085P series) are available in 1.5V, 1.8V, 2.5V, 3.3V, and 5.0V. The voltage adjustable type (XB1085K series) is also available which can set the output voltage with only two external resistors.
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With an overcurrent and thermal protection circuit built-in, the IC is disabled for protection when an output current reaches The XB1085 series is available in TO-252 package.
limit current or junction temperature increases up to limit temperature.
APPLICATIONS
High efficiency linear regulators Battery chargers DVD drives Set top boxes Various battery drive equipment
FEATURES
: More than 3.0A (within Pd) Maximum Output Current Maximum Operating Voltage : 12V : 1.5V, 1.8V, 2.5V, 3.3V, Output Voltage 5.0V, (XB1085P) Externally Set (XB1085K/ Reference Voltage 1.25V (TYP.)) : 1% ( Tj =25 ) Output Voltage Accuracy : 1.3V @ IOUT=3.0A (TYP.) Dropout Voltage : 0.015% (TYP.) Line Regulation : 0.1% (TYP.) Load Regulation Reference Voltage Pin Current : Less than 120 A Overcurrent Protection Circuit Built-In Thermal Protection Circuit Built-In : TO-252 Package
TYPICAL APPLICATION CIRCUITS
XB1085P Series VIN VIN
CIN=10 F CIN=10uF
TYPICAL PERFORMANCE CHARACTERISTICS
Output Voltage vs. Output Current
XB1085P331
VIN=4.9V VIN=4.9V CIN=10 F (Tantalum), CL=22 F (Tantalum) CIN=10F(Tantal),CL=22F(Tantal)
VOUT VSS
IOUT
CL=22 F CL=22uF (Tantalum) (Tantalum)
(Tantalum)
3.50 Output Voltage: VOUT(V) 3.00 2.50 2.00 1.50 1.00 0.50 0.00 0 600 1200 1800 2400 Output Current: IOUT (mA) 3000 Ta=85 Ta=25 Ta=0
XB1085K Series VIN VIN
CIN=10 F CIN=10uF
VOUT ADJ R1
IOUT
CL=22 F CL=22uF (Tantalum) (Tantalum)
(Tantalum) R2
VOUT=VREFx(1+R2/R1) + IADJxR2
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XB1085 Series
PIN CONFIGURATION
VOUT VOUT (Tab) (Tab) 22
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2 2 VOUT VOUT 1 1 VSS / VSS/ADJ ADJ
IN VIN
3 V
TO-252 (TOP VIEW)
PIN ASSIGNMENT
PIN NUMBER TO-252 1 2 3 PIN NAME VSS / ADJ VOUT VIN FUNCITONS Ground / Reference Voltage Output Input
PRODUCT CLASSIFICATION
Ordering Information XB1085
DESIGNATOR DESCRIPTION Type of Regulators SYNBOL P K 151 181 Output Voltage and Output Voltage Accuracy 251 331 501 12B Package Device Orientation J R L DESCRIPTION : Fixed VOUT : Adjustable (Externally Set) : VOUT=1.5V ( 1%) : VOUT=1.8V ( 1%) : VOUT=2.5V ( 1%) : VOUT=3.3V ( 1%) : VOUT=5.0V ( 1%) : VREF=1.25V ( 1%) : TO-252 : Embossed tape, standard feed : Embossed tape, reverse feed
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XB1085
Series
BLOCK DIAGRAM
VIN
VOUT
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Current Limit
Thermal Protection
Error Amp
Bandgap Reference
VSS/ ADJ
*Diodes inside the circuit are ESD protection diodes.
ABSOLUTE MAXIMUM RATINGS
PARAMETER Input Voltage Power Dissipation TO-252 Operating Junction Temperature Storage Temperature Range
Note: *1: Stresses greater than those listed above ratings may cause permanent damage to the device. *2: The rating of the power dissipation is determined when mounted on the PCB.
SYMBOL VIN Pd Tj Tstg
RATINGS 18 1300
(*2)
UNIT V mW
125 - 55 ~ 125
3/11
XB1085 Series
ELECTRICAL CHARACTERISTICS
XB1085PxxxJ
PARAMETER SYMBOL VOUT (1.5V) VOUT (1.8V) Output Voltage
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Tj= 25 CONDITIONS VIN=4.5V, IOUT=0mA VIN=4.8V, IOUT=0mA VIN=5.5V, IOUT=0mA VIN=6.3V, IOUT=0mA VIN=8.0V, IOUT=0mA 3V VIN 10V IOUT=10mA 3.3V VIN 10V IOUT=10mA 4V VIN 10V IOUT=10mA 4.8V VIN 10V IOUT=10mA 6.5V VIN 10V IOUT=10mA VIN-VOUT=3.0V 0mA IOUT 3.0A VIN-VOUT=3.0V 0mA IOUT 3.0A VIN-VOUT=3.0V 0mA IOUT 3.0A VIN-VOUT=3.0V 0mA IOUT 3.0A VIN-VOUT=3.0V 0mA IOUT 3.0A VOUT=1%, IOUT=3.0A VIN-VOUT=3.0V VIN=10V VIN-VOUT=1.5V IOUT=10mA O.T.(*1) O.T. O.T.
(*1)
unless otherwise specified MAX. 1.515 1.53 1.818 1.836 2.525 2.550 3.333 3.366 5.05 5.1 6 6 6 6 6 6 6 6 10 10 15 20 15 20 15 20 15 20 20 35 1.5 10 UNIT CIRCUIT V V V V V mV mV mV mV mV mV mV mV mV mV V A mA % -
MIN. 1.485 1.47 1.782 1.764 2.475 2.450 3.267 3.234 4.95 4.9 O.T.
(*1)
TYP. 1.5 1.8 2.5 3.3 5 0.5 1 0.5 1 0.5 1 0.5 1 0.5 1 3 7 3 7 3 7 3 7 5 10 1.3 4.5 5 0.5
VOUT (2.5V) VOUT (3.3V) VOUT (5.0V) VOUT1 (1.5V) VOUT1 (1.8V)
(*1)
O.T.(*1) O.T.(*1) O.T.
(*1)
Line Regulation
VOUT1 (2.5V) VOUT1 (3.3V) VOUT1 (5.0V) VOUT2 (1.5V) VOUT2 (1.8V)
O.T.(*1) O.T.
(*1)
O.T.(*1) O.T.(*1) O.T.
(*1)
Load Regulation
VOUT2 (2.5V) VOUT2 (3.3V) VOUT2 (5.0V) Vdif ILIM IDD Ts
O.T.(*1) O.T.(*1) O.T.
(*1)
Dropout Voltage Limit Current Supply Current Temperature Stability
Note:
O.T.(*1) O.T.(*1) 3.2 -
*1: O.T. denotes the specifications which apply over the operating junction Temperature range (0
Tj
125OC). If the power consumption exceeds
Please be sure that the power consumption does not exceed the power dissipation rating 1300mW. state.
the power dissipation rating and the operating junction temperature rises more than the rating 125OC, the IC enters thermal shutdown
4/11
XB1085
Series
ELECTRICAL CHARACTERISTICS (Continued)
XB1085K12BJ
Tj= 25 unless otherwise specified
PARAMETER Reference Voltage Line Regulation Load Regulation
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SYMBOL VREF VOUT1 VOUT2 Vdif ILIM Ts IOUTmin IADJ
CONDITIONS VIN-VOUT=3.0V IOUT=10mA 2.85V VIN 10V IOUT=10mA VIN-VOUT=3.0V 0mA IOUT 3.0A VOUT=1%, IOUT=3.0A VIN-VOUT=3.0V VIN-VOUT=1.5V IOUT=10mA VIN=10V VIN=4.25V, IOUT=10mA O.T.(*1) O.T.(*1)
MIN. 1.238 1.225 O.T.
(*1)
TYP. 1.25 0.015 0.035 0.1 0.2 1.3 4.5 0.5 3 55
MAX. 1.262 1.275 0.2 0.2 0.3 0.4 1.5 10 120
UNIT V % % V A % mA A
CIRCUIT
Dropout Voltage Limit Current Temperature Stability Minimum Output Current Adjust Voltage Pin Current
Note:
3.2 O.T.(*1) O.T.(*1) O.T.
(*1)
-
-
*1: O.T. denotes the specifications which apply over the operating junction Temperature range (0
Tj
125OC). If the power consumption exceeds
Please be sure that the power consumption does not exceed the power dissipation rating, 1300mW. state.
the power dissipation rating and the operating junction temperature rises more than the rating, 125OC, the IC enters thermal shutdown
5/11
XB1085 Series
TEST CIRCUITS
XB1085PxxxJ
Circuit
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VIN
VOUT
A
VIN
CIN
V
VSS
V
CL
* CIN=10 F (Tantalum), CL=22 F (Tantalum) Circuit
A
VIN
VOUT
VIN
VSS
XB1085K12BJ
Circuit
VIN
VOUT
V
VIN
100
CIN
ADJ
A
164
CL
V
VOUT: 3.3V *
* CIN=10 F (Tantalum), CL=22 F (Tantalum)
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XB1085
Series
TYPICAL PERFORMANCE CHARACTERISTICS
(1) Output Voltage vs. Output Current
XB1085P331
VIN=4.9V VIN=4.9V CIN=10 F (Tantalum), CL=22 F (Tantalum) CIN=10F(Tantal),CL=22F(Tantal)
(2) Output Voltage vs. Input Voltage
XB1085P331 3.5 3.0 2.5 2.0 1.5 1.0 0.5 0.0 0 2 4 6 Supply Voltage: VIN(V) Input Voltage: VIN (V) 8 10 Ta=85 Ta=25 Ta=0
IOUT=10mA IOUT=10mA CIN=10 F (Tantalum), CL=22 F (Tantalum) CIN=10F(Tantal),CL=22F(Tantal)
Output Voltage: VOUT(V)
3.0
2.5 www..com 2.0 1.5 1.0 0.5 0.0 0
Ta=85 Ta=25 Ta=0
1000 2000 Output Current: IOUT (mA)
3000
(3) Dropout Voltage vs. Output Current
Output Voltage: VOUT(V)
3.5
(4) Supply Current vs. Input Voltage
XB1085P331
CIN=10 F (Tantalum), CL=22 F (Tantalum) CIN=10uF(TantalCL=22uF(Tantal)
XB1085P331
CIN=10 F (Tantalum), CL=22 F (Tantalum) CIN=10uF(TantalCL=22uFTantal
Dropout Voltage: VdifV)
Supply Current: ISS (mA)
1.2 1.0 0.8 0.6 0.4 0.2 0.0 0
6 5 4 3 2 1 0 0 2
Ta=85 Ta=25 Ta=0
Ta=85 Ta=25 Ta=0
500 1000 1500 2000 2500 Output Current: IOUT (mA)
3000
4 6 Supply Voltage: VIN(V) Input Voltage: VIN (V)
8
10
(5) Reference Voltage vs. Ambient Temperature
(6) Adjust Pin Current vs. Ambient Temperature
XB1085K12B VOUT=3.3V)
VIN=4.9V VIN=4.9V CIN=10 F (Tantalum), CL=22 F (Tantalum) CIN=10F(Tantal),CL=22F(Tantal)
XB1085K12B (VOUT=3.3V) XB1085K12B(VOUT=3.3V)
IOUT=10mA IOUT10mA CIN=10CIN=10F(Tantal),CL=22F(Tantal) F (Tantalum), CL=22 F (Tantalum)
Reference Voltage: VREF V)
1.26 1.25 1.24 1.23 1.22 0 10 20 30 40 50 60 70 Ambient Temperature: Ta () 80 90
Adjust Pin Current: IADJ (A
1.27
100 80 60 40 20 0 0 10 20 30 40 50 60 70 Ambient Temperature: Ta () 80 90 VIN=4.25V
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XB1085 Series
TYPICAL PERFORMANCE CHARACTERISTICS (Continued)
(7) Load Transient Response
XB1085P331
VIN=6.3V VIN=6.3V CIN=CL=10 F (Tantalum) CIN=CL=10F(Tantal)
XB1085K12B(VOUT=3.3V)
VIN=6.3V VIN=6.3V CIN=CL=10F(Tantal) CIN=CL=10 F (Tantalum) OutputVoltage:VOUT(V)
12.0 10.5 9.0 7.5 www..com 6.0 4.5 3.0 1.5 0.0 -1.5
Output Current: IOUT(A)
Output Voltage: VOUT(V)
Output Current: IOUT(A)
Output Current:IOUT(A )
VOUT
4.0 3.0 3A 2.0 1.0 0.0
IOUT
0.1A
12.0 10.5 9.0 7.5 6.0 4.5 3.0 1.5 0.0 -1.5
VOUT
4.0 3.0 3A 2.0 1.0 0.0
IOUT Time100s/DIV
0.1A
Time100s/DIV
(8) Input Transient Response
XB1085P331
IOUT=200mA IOUT=200mA
XB1085K12B(VOUT=3.3V)
IOUT=200mA F (Tantalum) CIN=1F(Tantal),CL=10F(Tantal)
F (Tantalum), CL=10 IOUT=200mA
11 Supply Voltage: VIN(V) 10 9 8 7 6 5
CIN=1CIN=1F(Tantal),CL=10F(Tantal) F (Tantalum), CL=10 F (Tantalum)
CIN=1
3.32
Output Voltage: VOUT(V)
11 Supply Voltage: VIN(V) 10 9 8 7 6 5 Time200s/DIV VIN 5.3V 7.3V VOUT
3.36
Output Voltage: VOUT(V)
VOUT
3.30 3.28 7.3V 5.3V 3.26 3.24
3.34 3.32 3.30 3.28 3.26 3.24
VIN Time200s/DIV
3.22 3.20
(9) Ripple Rejection Rate
XB1085P331
VIN=6.3VDC+1.0Vp-pAC VIN=6.3VDC+ 1.0Vp-pAC
XB1085K12B(VOUT=3.3V)
VIN=6.3VDC+1.0Vp-pAC VIN=6.3VDC+ 1.0Vp-pAC
Ripple Rejection Rate: PSRR (dB) ripple rejection rateB)
Ripple Rejection Rate: PSRR (dB)
IOUT=1ATa=25CL=25uF(Tantal) IOUT=1A, Ta=25 , CL=25 F (Tantalum)
ripple rejection rateB)
100 80 60 40 20 0 0.01
IOUT=1ATa=25CL=25uF(Tantal) IOUT=1A, Ta=25 , CL=25 F (Tantalum)
100 80 60 40 20 0 0.01
0.1 1 10 0.1 1 10 ripple rejection ratekHz)
Ripple Frequency: f (kHz)
100
0.1 11 10 10 0.1 ripple rejection ratekHz) Ripple Frequency: f (kHz)
100
8/11
XB1085
Series
PACKAGING INFORMATION
TO-252
5.30.2
1.10.25
6.550.2
0.50.1
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6.10.15 0.750.15
0.850.25
9.90.55
0.750.15
0.750.15
0. 50. 1
2. 28
2. 28
2.3 -0.15
UNIT: mm m m
MIN4.32
+0.1
9/11
XB1085 Series
MARKING RULE
TO-252
Represents product series MARK

PRODUCT SERIES XB1085****J*
8
5
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2
Represent the type of regulator MARK TYPE P Fixed Output Type K Adjustable (Externally Set)
3
PRODUCT SERIES XB1085P***J* XB1085K***J*
1
Represents output voltage MARK 1 1 2 3 5 1 5 8 5 3 0 2
OUTPUT VOTLAGE 1.5V 1.8V 2.5V 3.3V 5.0V ADJ
PRODUCT SERIES XB1085P151J* XB1085P181J* XB1085P251J* XB1085P331J* XB1085P501J* XB1082K12BJ*
TO-252 (TOP VIEW)
Represents output voltage accuracy and output type OUTPUT VOLTAGE MARK PRODUCT SERIES ACCURACY (OUTPUT TYPE) 1 1% XB1085P**1J* B Adjustable XB1085K12BJ* Represents the last digit of production year ex.) MARK PRODUCTION YEAR 7 2007 8 2008 Represents production lot number 0 to 9, A to Z repeated. (G, I, J, O, Q, W excepted. `0' of the first digit does not mark.) * No character inversion used. ex.) MARK PRODUCTION LOT NUMBER Blank 1 3 A 03 1A
10/11
XB1085
Series
1. The products and product specifications contained herein are subject to change without notice to improve performance characteristics.
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Consult us, or our representatives
before use, to confirm that the information in this catalog is up to date. 2. We assume no responsibility for any infringement of patents, patent rights, or other rights arising from the use of any information and circuitry in this catalog. 3. Please ensure suitable shipping controls (including fail-safe designs and aging protection) are in force for equipment employing products listed in this catalog. 4. The products in this catalog are nodeveloped, designed, or approved for use with such equipment whose failure of malfunction can be reasonably expected to directly endanger the life of, or cause significant injury to, the user. (e.g. Atomic energy; aerospace; transport; combustion and associated safety equipment thereof.) 5. Please use the products listed in this catalog within the specified ranges. Should you wish to use the products under conditions exceeding the specifications, please consult us or our representatives. 6. We assume no responsibility for damage or loss due to abnormal use. 7. All rights reserved. No part of this catalog may be copied or reproduced without the prior permission of Torex Semiconductor Ltd.
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