CAT6219 CATALYST [Catalyst Semiconductor], CAT6219 Datasheet

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CAT6219

Manufacturer Part Number
CAT6219
Description
500mA CMOS LDO Regulator
Manufacturer
CATALYST [Catalyst Semiconductor]
Datasheet

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GND
VIN
EN
500mA CMOS LDO Regulator
FEATURES
APPLICATIONS
PIN CONFIGURATION
© 2007 Catalyst Semiconductor, Inc.
Characteristics subject to change without notice
For Ordering Information details, see page 9.
5-Lead Thin SOT-23
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 55μA typical
Full-load ground current of 85μA 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
Cellular phones
Battery-powered devices
Consumer Electronics
1
2
3
(1mm height)
Top View
CAT6219
5
4
VOUT
BYP
GND
VIN
EN
6-Lead TDFN
(2mm x 2mm)
1
2
3
Top View
6
5
4
BYP
NC
VOUT
1
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 150μs.
With zero shutdown current and low ground current of
55μA typical, the CAT6219 is ideal for battery-
operated 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 compo-
nent 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.
TYPICAL APPLICATION CIRCUIT
V
2.3V
to 5.5V
OFF ON
IN
C
1µF
IN
EN
VIN
CAT6219
GND
VOUT
BYP
CAT6219
Doc. No. 10009 Rev. A
C
2.2µF
C
10nF
OUT
BYP
V
OUT
(Optional)

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CAT6219 Summary of contents

Page 1

... 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 compo- nent cost ...

Page 2

... BLOCK DIAGRAM VIN Reference BYP Figure 2. CAT6219 Functional Block Diagram The capacitor should be located near the device. For the SOT23-5 package, a continuous 500mA output IN current may turn-on the thermal protection. A 250Ω value can be internal shutdown switch discharges the output IN capacitor in the no-load condition ...

Page 3

... OUT I = 500mA OUT V < 0. 1kHz 10nF BYP f = 20kHz 10nF BYP OUT C = 10nF BYP BW = 10Hz to 100kHz V = 2 2 CAT6219 Min Typ Max Unit -1.0 +1.0 % -2.0 +2.0 40 ppm/ºC ±0.1 -0.2 +0.2 %/V -0.4 +0 300 400 mV 500 55 75 μ μ ...

Page 4

... CAT6219 TYPICAL CHARACTERISTICS V = 3.85V 100μ 1µ OUT IN Dropout Characteristics 3.0 0.1mA 2.5 500mA 2.0 1.5 1.0 0.5 0.0 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) Load Regulation 2.95 2.90 2.85 2.80 2. 100 150 200 250 300 350 400 450 500 OUTPUT LOAD CURRENT (mA) Ground Current vs. Load Current 100 100 150 200 250 300 350 400 450 500 OUTPUT LOAD CURRENT (mA) Doc ...

Page 5

... PSRR vs. Frequency (10mA Load 1.0E+01 4.5 5 5.5 5 CAT6219 INPUT VOLTAGE (V) Dropout vs. Load Current 0 50 100 150 200 250 300 350 400 450 500 OUTPUT LOAD CURRENT (mA 10nF BYP BYP 1.0E+02 1.0E+03 1.0E+04 1.0E+05 FREQUENCY [Hz] Doc. No. 10009 Rev. A ...

Page 6

... CAT6219 TRANSIENT CHARACTERISTICS V = 3.85V 100μ 1µ OUT IN Enable Turn-On (100μA Load) Enable Turn-On (500mA Load) Line Transient Response (3.85V to 4.85V) Doc. No. 10009 Rev. A (shown for 2.85V output option) = 2.2μ 10nF 25°C unless otherwise specified. OUT BYP A Enable Turn-Off (100μ ...

Page 7

... Catalyst Semiconductor, Inc. Characteristics subject to change without notice SYMBOL MIN A — A1 0.01 A2 0. θ 0º CAT6219 NOM MAX — 1.00 0.05 0.10 0.87 0.90 — 0.45 0.15 0.20 2.90 BSC 2.80 BSC 1.60 BSC 0.95 BSC 1.90 BSC 0.40 0.50 0.60 REF 0.25 BSC 8º GAUGE PLANE L2 θ Doc. No. 10009 Rev. A ...

Page 8

... CAT6219 PACKAGE OUTLINES 6-LEAD TDFN (2mm x 2mm) SYMBOL MIN NOM MAX A 0.70 0.75 0.80 A1 0.00 0.02 0.05 A3 0.20 REF b 0.25 0.30 0.35 D 1.90 2.00 2.10 D2 1.50 1.60 1.70 E 1.90 2.00 2.10 E2 0.90 1.00 1.10 e 0.65 TYP L 0.16 0.25 0.35 For current Tape and Reel information, download the PDF file from: http://www.catsemi.com/documents/tapeandreel.pdf. Notes: (1) All dimensions are in millimeters, angles in degrees. (2) REFER JEDEC MO-229. Doc. No. 10009 Rev. A ...

Page 9

... All packages are RoHS-compliant (Lead-free, Halogen-free). (2) The standard lead finish is NiPdAu pre-plated (PPF) lead frames. (3) The device used in the above example is a CAT6219-285TD-GT3 (V (4) Standard voltages are 1.80V, 2.85V and 3.30V. For other voltage options, please contact your nearest Catalyst Semiconductor Sales office ...

Page 10

... CAT6219 REVISION HISTORY Date Rev. Reason 04/20/2007 A Initial Release Copyrights, Trademarks and Patents Trademarks and registered trademarks of Catalyst Semiconductor include each of the following: Beyond Memory™, DPP™, EZDim™, LDD™, MiniPot™ and Quad-Mode™ Catalyst Semiconductor has been issued U.S. and foreign patents and has patent applications pending that protect its products. ...

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