AME8834 Datasheet

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AME, Inc.

AME8833/8834

High PSRR, 150mA CMOS LDO

n

General Description

The AME8833 family of positive, linear regulators fea-

ture low quiescent current (50碌A typ.) low dropout volt-

age and excellent PSRR, thus making them ideal for Tele-

communications and other battery applications. The ul-

tra-small SC-70 package is attractive for "Pocket" and

"Hand Held" applications.

AME8834鈥檚 output voltage can be adjusted with an

external resister divider.

These rugged devices have both Thermal Shutdown,

and Current Fold-back to prevent device failure under the

"Worst" of operating conditions.

As an additional feature, the AME8833/8834 is stable

with an output capacitance of just extended 0.22碌F or

greater.

n

Functional Block Diagram

IN

Overcurrent

Shutdown

OUT

Thermal

Shutdown

SHDN

R1

-

AMP

+

R2

Vref

n

Features

l

l

l

l

Stable with only 0.22碌F output Cap

Very Low Dropout Voltage

Guaranteed 150mA Output

Accurate to within 1.0%

GND

l

50碌A Quiescent Current

l

Over-Temperature Shutdown

l

Current Limiting

l

Short Circuit Current Fold-back

l

Excellent PSRR (Typ. 70dB)

l

Power-Saving Shutdown Mode

l

Ultra-small SC-70 and SOT-25-L Package

l

Factory Pre-set Output Voltages

l

Low Temperature Coefficient

l

Input Voltage Range (2V - 5.5V)

n

Typical Application

IN

SHDN

IN

OUT

GND

OUT

AME8833

C2

0.22碌F

碌

C1

1碌F

碌

n

Applications

l

l

l

l

l

l

l

l

l

l

Cellular Phones

Instrumentation

Portable Electronics

Wireless Devices

Cordless Phones

PC Peripherals

Battery Powered Widgets

Electronic Scales

Cameras

Telecommunications

OUT

IN

SHDN

IN

OUT

AME8834

GND

R1

V

REF

R2

C1

C2

1

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