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CAT6219-285TD-GT3 数据手册 - Catalyst
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CAT6219-285TD-GT3数据手册
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CAT6219
© Catalyst Semiconductor, Inc. 1 Doc. No. MD-10009 Rev. D
Characteristics subject to change without notice
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 55µA typical
Full-load ground current of 85µA typical
±1.0% initial accuracy (V
OUT
≥ 2.0V)
±2.0% accuracy over temperature (V
OUT
≥ 2.0V)
“Zero” current shutdown mode
Current limit and thermal protection
5-lead TSOT-23 and 6-pad TDFN packages
APPLICATIONS
Cellular phones
Battery-powered devices
Consumer Electronics
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 LDO is available in fixed and adjustable output in
the low profile (1mm max height) 5-lead TSOT23 and in
the 6-pad 2mm x 2mm TDFN packages.
For Ordering Information details, see page 9.
PIN CONFIGURATION TYPICAL APPLICATION CIRCUIT
5-Lead TSOT-23 6-Pad TDFN
(1mm height) (2mm x 2mm)
Top View Top View
VIN
CAT6219
BYPEN
VOUT
GND
OFF ON
V
IN
1µF
2.3V
to 5.5V
C
IN
V
OUT
2.2µF
C
OUT
10nF
C
BYP
(Optional)
VOUT
EN
2
3
1
BYP/ADJ
5
4
VIN
GND
CAT6219
BYP/ADJ
VIN
3
1
VOUT
6
NC
5
4
EN
GND
2
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