|
CAT6218 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% output voltage initial accuracy
 ±2.0% accuracy over temperature
 âZeroâ 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 compoâ
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
VIN
2.3V
to 5.5V
VIN VOUT
CIN
1µF CAT6218
OFF ON
EN BYP
GND
VOUT
COUT
1µF
CBYP (Optional)
10nF
© 2007 Catalyst Semiconductor, Inc.
1
Characteristics subject to change without notice
Doc. No. MD-4010 Rev. A
|
▷ |