AME8804 Datasheet, PDF (1/12 Pages) Analog Microelectronics – 300mA CMOS LDO

Analog Microelectronics, Inc.
AME8804
300mA CMOS LDO
n General Description
The AME8804 family of positive, linear regulators fea-
ture low quiescent current (30µA typ.) with low dropout
voltage, making them ideal for battery applications. The
space-saving SOT-26 and SOT-25 packages are attrac-
tive for "Pocket" and "Hand Held" applications.
These rugged devices have both Thermal Shutdown,
and Current Fold-back to prevent device failure under
the "Worst" of operating conditions.
The SOT-26 version also features a "Power Good" de-
tector, which pulls low when the output is out of regula-
tion.
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 30µA Quiescent 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 and SOT-25
l Adjustable Output Voltages
l Low Temperature Coefficient
n Functional Block Diagram
IN
OUT
Overcurrent
Shutdown
Thermal
Shutdown
EN
V _ref x110%
PG
AMP
ADJ
n Applications
l Instrumentation
l Portable Electronics
l Wireless Devices
l Cordless Phones
l PC Peripherals
l Battery Powered Widgets
l Electronic Scales
n Typical Application
IN
EN
OUT
IN _AME8804
C1
PG _GND ADJ
5V _1µF
OUT
C2
R1 _{100p C3}
2 . 2 µF
R2
V_ref x90%
V _ref= 1 . 2 1 5 V
GND
V_OUT = 1.215 (R1 +R2)/R2
C2 is unnecessary when R1 or R2 < 20K
PG pin is only available in the SOT-26 package option
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