AME8804_12 Datasheet, PDF (1/18 Pages) Analog Microelectronics – 300mA CMOS LDO

AME
AME8804
n General Description
The AME8804 family of positive, linear regulators fea-
ture low ground current (35µA typ.) with low dropout volt-
age, making them ideal for battery applications. The
space-saving SOT-26/TSOT-26 and SOT-25/TSOT-25
packages are attractive for "Pocket" and "Hand Held" ap-
plications.
These rugged devices have both Thermal Shutdown,
and Current Fold-back to prevent device failure under the
"Worst" operating conditions.
The SOT-26/TSOT-26 version also features a "Power
Good" detector, which pulls low when the output is out of
regulation.
The AME8804 is stable with an output capacitance of
2.2µF or greater.
n Features
l Very Low Dropout Voltage
l Guaranteed 300mA Output
l Accurate to within 1.5%
l Typical 35µA Ground Current
l Over-Temperature Shutdown
l Current Limiting
l Short Circuit Current Fold-back
l Power Good Detector (6 pin version only)
l Power-Saving Shutdown Mode
l Space-Saving SOT-26/TSOT-26 and SOT-25
/ TSOT-25
l Adjustable Output Voltages
l Low Temperature Coefficient
l All AME's Lead Free Products Meet RoHS
Standards
n Applications
l Instrumentation
l Portable Electronics
l Wireless Devices
l Cordless Phones
l PC Peripherals
l Battery Powered Widgets
l Electronic Scales
Rev.K.04
300mA CMOS LDO
n Functional Block Diagram
IN
Overcurrent
Shutdown
Thermal
Shutdown
EN
Vref x110%
PG
AMP
OUT
ADJ
Vref x90%
Vref _=1.215V
GND
n Typical Application
IN
5V
EN
OUT
IN AME8804
PG
C1
GND
ADJ
1µ F
OUT
C2
R1 _{100p C3}
2.2µ F
R2
V = 1.215 (R1 +R2)/R2
OUT
C2 is unnecessary when R1 or R2 < 20K
PG pin is only available in the SOT-26 package option
1