AME8821BEEV300Y datasheet, PDF

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AME8821BEEV300Y: Description250mA Hi-PSRR, Low-Quiescent LDO with In-Rush Current Control For USB Application; CategoryPower/power management The power supply circuit; File Size169KB，15 Pages; ManufacturerAnalogMicroElectronics,Inc.(AME); AMT was founded in Taiwan in November 2000 and merged into AMT Microelectronics, Inc., a US company located in Silicon Valley, California, USA. Its stock was officially listed for public trading in March 2004.

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AME8821BEEV300Y Overview

250mA Hi-PSRR, Low-Quiescent LDO with In-Rush Current Control For USB Application

AME8821BEEV300Y Parametric

Parameter Name	Attribute value
Maker	AnalogMicroElectronics,Inc.(AME)
package instruction	,
Reach Compliance Code	compli

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AME, Inc.

AME8821

General Description

250mA Hi-PSRR, Low-Quiescent LDO

with In-Rush Current Control

For USB Application

Applications

Instrumentation

Portable Electronics

Wireless Devices

Cordless Phones

PC Peripherals

Battery Powered Widgets

The AME8821 family of positive, linear regulators fea-

ture low quiescent current (17µA typ.) with low dropout

voltage, making them ideal for battery applications. The

space-saving SOT-25/TSOT-25 packages are attractive

for

“Pocket”

and

“Hand

Held”applications.

These rugged devices have both Thermal Shutdown,

and Current Limitation to prevent device failure under the

“Worst”

operating conditions. In application requires a

low noise regulated supply. The AME8821 family uses

the SR pin to program the output voltage’s slew rate to

control the in-rush current. This is specifically used in

the USB application where large load capacitance is

present at start-up.

The AME8821 also features a logic-enabled sleep mode

to shutdown the regulator, reducing quiescent current to

1µA typical at T

= 25

The AME8821 is stable with an output capacitance of

4.7µF or larger.

Function Block Diagram

* ENB or EN

10KΩ

AMP

ref

GND

Current Limit

/ Thermal

Protection

OUT

* AME8821A: ENB, AME8821B: EN

Features

Guaranteed 250mA Output

17µA Quiescent Current

Over-Temperature Shutdown

Over-Current Limitation

Noise Reduction SR Capacitor

Power-Saving Shutdown Mode

Space-Saving SOT-25/TSOT-25 Packages

Factory Pre-set Output Voltages

Enable pin option

ENB active low enable

EN active high enable

All AME's Lead Free Products Meet RoHS

Standards

Typical Application

1µF

AME8821A

ENB

GND

OUT

0.01µF

4.7µF

1µF

AME8821B

GND

OUT

0.01µF

4.7µF

Rev.A.01

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