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CAT6219
500mA CMOS LDO Regulator
FEATURES
Guaranteed 500mA peak output current Low dropout voltage of 300mV typical at 500mA Stable with ceramic output capacitor External 10nF bypass capacitor for low noise Quick-start feature Under voltage lockout No-load ground current of 55A typical Full-load ground current of 85A typical 1.0% output voltage initial accuracy 2.0% accuracy over temperature "Zero" current shutdown mode Current limit and thermal protection 5-lead thin SOT-23 and 6-lead TDFN packages
DESCRIPTION
The CAT6219 is a 500mA CMOS low dropout regulator that provides fast response time during load current and line voltage changes. The quick-start feature allows the use of an external bypass capacitor to reduce the overall output noise without affecting the turn-on time of just 150s. With zero shutdown current and low ground current of 55A typical, the CAT6219 is ideal for batteryoperated devices with supply voltages from 2.3V to 5.5V. An internal under voltage lockout circuit disables the output at supply voltages under 2.15V typical. The CAT6219 offers 1% initial accuracy and low dropout voltage, 300mV typical at 500mA. Stable operation is provided with a small value ceramic capacitor, reducing required board space and component cost. Other features include current limit and thermal protection. The device is available in the low profile (1mm max height) 5-lead thin SOT23 and in the 6-lead 2mm x 2mm TDFN packages.
APPLICATIONS
Cellular phones Battery-powered devices Consumer Electronics
For Ordering Information details, see page 9.
PIN CONFIGURATION
5-Lead Thin SOT-23
(1mm height)
TYPICAL APPLICATION CIRCUIT
6-Lead TDFN
(2mm x 2mm)
VIN 2.3V to 5.5V
CIN 1F
VIN
VOUT
VOUT COUT 2.2F
CAT6219 EN GND BYP
VIN 1 GND 2 EN 3
Top View
5 VOUT CAT6219 4 BYP
EN GND VIN
1 2 3
6 5 4
BYP NC VOUT
OFF ON
CBYP (Optional) 10nF
Top View
(c) 2007 Catalyst Semiconductor, Inc. Characteristics subject to change without notice
1
Doc. No. 10009 Rev. A
CAT6219 PIN DESCRIPTIONS
Pin # Name Function 1 VIN Supply voltage input. 2 GND Ground reference. Enable input (active high); a 2.5M 3 EN pull-down resistor is provided. Optional bypass capacitor connection 4 BYP for noise reduction and PSRR enhancing. 5 VOUT LDO Output Voltage.
BLOCK DIAGRAM
VIN VIN EN LDO EN BYP Reference
Shutdown Switch
VOUT VOUT
GND
Figure 2. CAT6219 Functional Block Diagram
PIN FUNCTION
VIN is the supply pin for the LDO. A small 1F ceramic bypass capacitor is required between the VIN pin and ground near the device. When using longer connections to the power supply, CIN value can be increased without limit. The operating input voltage range is from 2.3V to 5.5V. EN is the enable control logic (active high) for the regulator output. It has a 2.5M pull-down resistor, which assures that if EN pin is left open, the circuit is disabled. VOUT is the LDO regulator output. A small 2.2F ceramic bypass capacitor is required between the VOUT pin and ground. For better transient response, its value can be increased to 4.7F. The capacitor should be located near the device. For the SOT23-5 package, a continuous 500mA output current may turn-on the thermal protection. A 250 internal shutdown switch discharges the output capacitor in the no-load condition. GND is the ground reference for the LDO. The pin must be connected to the ground plane on the PCB. BYP is the reference bypass pin. An optional 0.01F capacitor can be connected between BYP pin and GND to reduce the output noise and enhance the PSRR at high frequency.
ABSOLUTE MAXIMUM RATINGS (1)
Parameter VIN VEN, VOUT Junction Temperature, TJ Power Dissipation, PD Storage Temperature Range, TS Lead Temperature (soldering, 5 sec.) ESD Rating (Human Body Model) Rating 0 to 6.5 -0.3 to VIN+0.3 +150 Internally Limited (2) -65 to +150 260 3 Unit V V C mW C C kV
RECOMMENDED OPERATING CONDITIONS (3)
Parameter VIN VEN Junction Temperature Range, TJ Package Thermal Resistance (SOT23-5), JA Range 2.3 to 5.5 0 to VIN -40 to +125 235 Unit V V C C/W
Typical application circuit with external components is shown on page 1.
Notes: (1) Exceeding maximum rating may damage the device. (2) The maximum allowable power dissipation at any TA (ambient temperature) is PDmax = (TJmax - TA) / JA. Exceeding the maximum allowable power dissipation will result in excessive die temperature, and the regulator will go into thermal shutdown. (3) The device is not guaranteed to work outside its operating rating.
Doc. No. 10009 Rev. A
2
(c) 2007 Catalyst Semiconductor, Inc. Characteristics subject to change without notice
CAT6219 ELECTRICAL OPERATING CHARACTERISTICS (1)
VIN = VOUT + 1.0V, VEN = High, IOUT = 100A, CIN = 1F, COUT = 2.2F, ambient temperature of 25C (over recommended operating conditions unless specified otherwise). Bold numbers apply for the entire junction temperature range. Symbol Parameter VOUT-ACC TCOUT VR-LINE VR-LOAD VDROP Output Voltage Accuracy Output Voltage Temp. Coefficient Line Regulation Load Regulation Dropout Voltage (2) VIN = VOUT + 1.0V to 5.5V IOUT = 100A to 500 mA IOUT = 500mA IOUT = 0A IOUT = 500mA IGND-SD PSRR ISC TON eN ROUT-SH REN VIN-UVLO ESR VHI VLO IEN Shutdown Ground Current Power Supply Rejection Ratio Output short circuit current limit Turn-On Time Output Noise Voltage
(3)
Conditions Initial accuracy
Min -1.0 -2.0
Typ
Max +1.0 +2.0
Unit % ppm/C
40 -0.2 -0.4 1 300 55 85 1 2 64 54 600 800 150 45 250 2.5 2.15 5 VIN = 2.3 to 5.5V VIN = 2.3 to 5.5V VEN = 0.4V VEN = VIN 0.15 1.5 160 10 1.8 0.4 1 4 500 0.1 +0.2 +0.4 1.5 2 400 500 75 90
%/V % mV
IGND
Ground Current
A
VEN < 0.4V f = 1kHz, CBYP = 10nF f = 20kHz, CBYP = 10nF VOUT = 0V CBYP = 10nF BW = 10Hz to 100kHz
A dB mA s Vrms M V m V V A
Shutdown Switch Resistance Enable pull-down resistor Under voltage lockout threshold COUT equivalent series resistance Logic High Level Logic Low Level Enable Input Current
Enable Input
Thermal Protection TSD THYS
Notes: (1) (2) (3) Specification for 2.85V output version unless specified otherwise. Dropout voltage is defined as the input-to-output differential at which the output voltage drops 2% below its nominal value measured at 1V differential. During test, the input voltage stays always above the minimum 2.3V. Specification for 1.8V output version.
Thermal Shutdown Thermal Hysteresis
C C
(c) 2007 Catalyst Semiconductor, Inc.
Characteristics subject to change without notice
3
Doc. No. 10009 Rev. A
CAT6219 TYPICAL CHARACTERISTICS (shown for 2.85V output version)
VIN = 3.85V, IOUT = 100A, CIN = 1F, COUT = 2.2F, CBYP = 10nF, TA = 25C unless otherwise specified. Dropout Characteristics
3.0
Line Regulation
2.87
OUTPUT VOLTAGE (V)
OUTPUT VOLTAGE (V)
2.5 2.0 1.5 1.0 0.5 0.0
0.1mA 500mA
2.86 2.85 2.84 2.83 2.82 2.5 3 3.5 4 4.5 5 5.5
0.0 0.5 1.0 1.5 2.0 2.5 3.0 3.5 4.0 4.5 5.0 5.5
INPUT VOLTAGE (V)
INPUT VOLTAGE (V)
Load Regulation
2.95
2.87
Output Voltage vs. Temperature
OUTPUT VOLTAGE (V)
OUTPUT VOLTAGE (V)
0 50 100 150 200 250 300 350 400 450 500
2.90
2.86 2.85 2.84 2.83 2.82 -40 -20 0 20 40 60 80 100 120 140
2.85
2.80
2.75
OUTPUT LOAD CURRENT (mA)
TEMPERATURE (C)
Ground Current vs. Load Current
100
65
Ground Current vs. Temperature
GROUND CURRENT (A)
GROUND CURRENT (A)
90 80 70 60 50 0 50 100 150 200 250 300 350 400 450 500
61 57 53 49 45 -40 -20 0 20 40 60 80 100 120 140
OUTPUT LOAD CURRENT (mA)
TEMPERATURE (C)
Doc. No. 10009 Rev. A
4
(c) 2007 Catalyst Semiconductor, Inc. Characteristics subject to change without notice
CAT6219 TYPICAL CHARACTERISTICS (shown for 2.85V output option) VIN = 3.85V, IOUT = 100A, CIN = 1F, COUT = 2.2F, CBYP = 10nF, TA = 25C unless otherwise specified.
Output Short-circuit Current vs. Input Voltage
1000
Ground Current vs. Input Voltage
70
GROUND CURRENT (A)
VOUT = 0
0 1 2 3 4 5
900
60 50 40 30 20 10 0 0 0.5 1 1.5 2 2.5 3 3.5 4 4.5 5 5.5
CURRENT LIMIT (mA)
800 700 600 500 400 300 200 100 0
INPUT VOLTAGE (V)
INPUT VOLTAGE (V)
Dropout vs. Temperature (500mA Load)
500mA DROPOUT VOLTAGE (mV)
500
400
Dropout vs. Load Current
DROPOUT VOLTAGE (mV)
-40 -20 0 20 40 60 80 100 120 140
450 400 350 300 250 200
350 300 250 200 150 100 50 0 0 50 100 150 200 250 300 350 400 450 500
TEMPERATURE (C)
OUTPUT LOAD CURRENT (mA)
Enable Threshold vs. Input Voltage
1.6
PSRR vs. Frequency (10mA Load)
80 70
ENABLE THRESHOLD (V)
CBYP = 10nF CBYP = 0
1.2
60
PSRR [dB]
50 40 30 20 10
0.8
0.4
0 2 2.5 3 3.5 4 4.5 5 5.5
0 1.0E+01
1.0E+02
1.0E+03
1.0E+04
1.0E+05
INPUT VOLTAGE (V)
FREQUENCY [Hz]
(c) 2007 Catalyst Semiconductor, Inc.
Characteristics subject to change without notice
5
Doc. No. 10009 Rev. A
CAT6219 TRANSIENT CHARACTERISTICS (shown for 2.85V output option) VIN = 3.85V, IOUT = 100A, CIN = 1F, COUT = 2.2F, CBYP = 10nF, TA = 25C unless otherwise specified.
Enable Turn-On (100A Load) Enable Turn-Off (100A Load)
Enable Turn-On (500mA Load)
Enable Turn-Off (500mA Load)
Line Transient Response (3.85V to 4.85V)
Load Transient Response (0.1mA to 500mA)
Doc. No. 10009 Rev. A
6
(c) 2007 Catalyst Semiconductor, Inc. Characteristics subject to change without notice
CAT6219 PACKAGE OUTLINES 5-LEAD TSOT-23
e
e
SYMBOL
A A1 A2 b
E E1
MIN
-- 0.01 0.80 0.30 0.12
NOM
-- 0.05 0.87 -- 0.15 2.90 BSC 2.80 BSC 1.60 BSC 0.95 BSC 1.90 BSC
MAX
1.00 0.10 0.90 0.45 0.20
c D E E1 e
e1
e1 L L1 L2 0 0.30
0.40 0.60 REF 0.25 BSC
0.50
8
D GAUGE PLANE L2 b A1 L L1
A2
A
c
For current Tape and Reel information, download the PDF file from: http://www.catsemi.com/documents/tapeandreel.pdf.
Notes:
(1) (2) All dimensions are in millimeters, angles in degrees. REFER JEDEC MO-193. 7
(c) 2007 Catalyst Semiconductor, Inc.
Doc. No. 10009 Rev. A
Characteristics subject to change without notice
CAT6219 PACKAGE OUTLINES 6-LEAD TDFN (2mm x 2mm)
SYMBOL
A A1 A3 b D D2 E E2 e L
MIN
0.70 0.00 0.25 1.90 1.50 1.90 0.90 0.16
NOM
0.75 0.02 0.20 REF 0.30 2.00 1.60 2.00 1.00 0.65 TYP 0.25
MAX
0.80 0.05 0.35 2.10 1.70 2.10 1.10 0.35
For current Tape and Reel information, download the PDF file from: http://www.catsemi.com/documents/tapeandreel.pdf.
Notes:
(1) (2) All dimensions are in millimeters, angles in degrees. REFER JEDEC MO-229.
Doc. No. 10009 Rev. A
8
(c) 2007 Catalyst Semiconductor, Inc. Characteristics subject to change without notice
CAT6219 EXAMPLE OF ORDERING INFORMATION
Prefix
CAT
Device #
6219
Suffix
-285 TD -G T3
Company ID Product Number 6219
VOUT Voltage (4) 180: 1.80V 285: 2.85V 330: 3.30V
Package TD: TSOT-23 (6) VP5 : TDFN-6
Lead Finish G: NiPdAu Tape & Reel T: Tape & Reel 3: 3000 Units/Reel (TSOT-23) 4: 4000 Units/Reel (TDFN)
Ordering Number CAT6219-180TD-GT3 CAT6219-285TD-GT3 CAT6219-330TD-GT3
Notes:
(1) (2) (3) (4) (5) (6) (7)
VOUT Voltage(5) 1.80V 2.85V 3.30V
Package TSOT-23 TSOT-23 TSOT-23
Quantity per Reel 3000 3000 3000
All packages are RoHS-compliant (Lead-free, Halogen-free). The standard lead finish is NiPdAu pre-plated (PPF) lead frames. The device used in the above example is a CAT6219-285TD-GT3 (VOUT = 2.85V, in a TSOT-23 package, NiPdAu, Tape and Reel, 3000 units). Standard voltages are 1.80V, 2.85V and 3.30V. For other voltage options, please contact your nearest Catalyst Semiconductor Sales office. All output voltage options have the same marking. Contact factory for availability. Package Marking for CAT6219 family is "RV."
(c) 2007 Catalyst Semiconductor, Inc.
Characteristics subject to change without notice
9
Doc. No. 10009 Rev. A
CAT6219 REVISION HISTORY
Date 04/20/2007 Rev. A Reason Initial Release
Copyrights, Trademarks and Patents Trademarks and registered trademarks of Catalyst Semiconductor include each of the following: Beyond MemoryTM, DPPTM, EZDimTM, LDDTM, MiniPotTM and Quad-ModeTM Catalyst Semiconductor has been issued U.S. and foreign patents and has patent applications pending that protect its products. CATALYST SEMICONDUCTOR MAKES NO WARRANTY, REPRESENTATION OR GUARANTEE, EXPRESS OR IMPLIED, REGARDING THE SUITABILITY OF ITS PRODUCTS FOR ANY PARTICULAR PURPOSE, NOR THAT THE USE OF ITS PRODUCTS WILL NOT INFRINGE ITS INTELLECTUAL PROPERTY RIGHTS OR THE RIGHTS OF THIRD PARTIES WITH RESPECT TO ANY PARTICULAR USE OR APPLICATION AND SPECIFICALLY DISCLAIMS ANY AND ALL LIABILITY ARISING OUT OF ANY SUCH USE OR APPLICATION, INCLUDING BUT NOT LIMITED TO, CONSEQUENTIAL OR INCIDENTAL DAMAGES. Catalyst Semiconductor products are not designed, intended, or authorized for use as components in systems intended for surgical implant into the body, or other applications intended to support or sustain life, or for any other application in which the failure of the Catalyst Semiconductor product could create a situation where personal injury or death may occur. Catalyst Semiconductor reserves the right to make changes to or discontinue any product or service described herein without notice. Products with data sheets labeled "Advance Information" or "Preliminary" and other products described herein may not be in production or offered for sale. Catalyst Semiconductor advises customers to obtain the current version of the relevant product information before placing orders. Circuit diagrams illustrate typical semiconductor applications and may not be complete.
Catalyst Semiconductor, Inc. Corporate Headquarters 2975 Stender Way Santa Clara, CA 95054 Phone: 408.542.1000 Fax: 408.542.1200 www.catsemi.com
Doc. No. 10009 Rev. A
Document No: 10009 Revision: A Issue date: 04/20/07
10 (c) 2007 Catalyst Semiconductor, Inc. Characteristics subject to change without notice

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