CAT6218_08 Datasheet, PDF (1/10 Pages) Catalyst Semiconductor – 300mA CMOS LDO Regulator

300mA CMOS LDO Regulator
CAT6218
FEATURES
„ Guaranteed 300mA output current
„ Low dropout voltage of 180mV typical at 300mA
„ Stable with 1μF ceramic output capacitor
„ External 10nF bypass capacitor for low noise
„ Quick-start feature
„ No-load ground current of 55μA typical
„ Full-load ground current of 80μA typical
„ ±1.0% initial accuracy (V_OUT ≥ 2.0V)
„ ±2.0% accuracy over temperature (V_OUT ≥ 2.0V)
„ “Zero” current shutdown mode
„ Fold-back current limit and under-voltage
lockout
„ Thermal protection
„ Thin SOT23-5 package
APPLICATIONS
„ Cellular phones
„ Battery-powered devices
„ Consumer Electronics
DESCRIPTION
The CAT6218 is a 300mA 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 CAT6218 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 2.1V typical.
The CAT6218 offers 1% initial accuracy and low
dropout voltage, 180mV typical at 300mA. Stable
operation is provided with a small value ceramic
capacitor, reducing required board space and compo–
nent cost.
Other features include fold-back current current limit
and thermal protection.
The device is available in the low profile (1mm max
height) 5-lead thin SOT23 package.
For Ordering Information details, see page 9.
PIN CONFIGURATION
TSOT-23 5-Lead
(1mm height)
VIN 1
GND 2
EN 3
5 VOUT
4 BYP
Top View
TYPICAL APPLICATION CIRCUIT
V_IN
2.3V
to 5.5V
VIN
C_IN
VOUT
1µF
CAT6218
OFF ON
EN
BYP
GND
V_OUT
C_OUT
1µF
C_BYP (Optional)
10nF
© Catalyst Semiconductor, Inc.
1
Characteristics subject to change without notice
Doc. No. MD-10010 Rev. C