AMS1117稳压芯片的芯片手册

AMS1117

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微电子电源主控板或者其他地方的硬件电路设计时使用的3.3V稳压芯片的使用手册，

Advanced AMS1117

Monolithic 1A LOW DROPOUT VOLTAGE REGULATOR

Systems

RoHS compliant

FEATURES APPLICATIONS

• Three Terminal Adjustable or Fixed Voltages* • High Efficiency Linear Regulators

1.5V, 1.8V, 2.5V, 2.85V, 3.3V and 5.0V

• Post Re

ulators for Switchin

Supplies

• Output Current of 1A • 5V to 3.3V Linear Regulator

• Operates Down to 1V Dropout • Battery Chargers

• Line Regulation: 0.2% Max. • Active SCSI Terminators

• Load Regulation: 0.4% Max. • Power Management for Notebook

• SOT-223, TO-252 and SO-8 package available • Battery Powered Instrumentation

GENERAL DESCRIPTION

The AMS1117 series of adjustable and fixed voltage regulators are designed to provide 1A output current and to operate

down to 1V input-to-output differential. The dropout voltage of the device is guaranteed maximum 1.3V at maximum output

current, decreasing at lower load currents.

On-chip trimming adjusts the reference voltage to 1%. Current limit is also trimmed, minimizing the stress under overload

conditions on both the regulator and power source circuitry.

The AMS1117 devices are pin compatible with other three-terminal SCSI regulators and are offered in the low profile surface

mount SOT-223 package, in the 8L SOIC package and in the TO-252 (DPAK) plastic package.

ORDERING INFORMATION:

PACKAGE TYPE OPERATING JUNCTION

TO-252 SOT-223 8L SOIC

TEMPERATURE RANGE

AMS1117CD AMS1117 AMS1117CS

-40 to 125° C

AMS1117CD-1.5 AMS1117-1.5 AMS1117CS-1.5

-40 to 125° C

AMS1117CD-1.8 AMS1117-1.8 AMS1117CS-1.8

-40 to 125° C

AMS1117CD-2.5 AMS1117-2.5 AMS1117CS-2.5

-40 to 125° C

AMS1117CD-2.85 AMS1117-2.85 AMS1117CS-2.85

-40 to 125° C

AMS1117CD-3.3 AMS1117-3.3 AMS1117CS-3.3

-40 to 125° C

AMS1117CD-5.0 AMS1117-5.0 AMS1117CS-5.0

-40 to 125° C

8L SOIC Top View

OUT

N/C

OUT

GND/ADJ

OUT

N/C

TAB IS

OUTPUT

TO-252 FRONT VIEW

*For additional available fixed voltages contact factory.

PIN CONNECTIONS

SOT-223 Top View

3 PIN FIXED/ADJUSTABLE

VERSION

1- Ground/Adjust

2- V

OUT

3- V

Advanced Monolithic Systems, Inc. www.advanced-monolithic.com Phone (925) 443-0722 Fax (925) 443-0723

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