CM3003-18 Ver la hoja de datos (PDF) - California Micro Devices Corp

Número de pieza

componentes Descripción

Lista de partido

CM3003-18

1.5 Amp Dual Mode Low Dropout CMOS Regulator

California Micro Devices Corp 

CM3003

1.5 Amp Dual Mode Low Dropout CMOS Regulator

Features

• Adjustable Output or Internally Fixed

• 375mV dropout at 1.5A load current

• Operates from 2.2V to 5.5V input supply

• Low Ground current (330µA at 1.5A Load)

• Minimal output capacitance required

• Current Limit Protection

• Thermal Overload Protection

• Reverse Voltage Protection

• Thermally enhanced 8-pin SOIC package

• Lead-free versions available

Applications

• Low Voltage "Core" processors

• Graphics Cards

• Gigabit NIC Cards

• PC Motherboards

• Notebooks

Product Description

The CM3003 is a family of very low dropout regulators

that offers dual mode operation. When the Adjust con-

trol pin (ADJ) is grounded, these devices automatically

enter a fixed voltage mode and deliver either a 1.8V or

2.5V output capable of supplying 1.5A, depending on

the device utilized. When the Adjust pin is connected to

an external resistor network the device automatically

operates as an adjustable regulator. The Adjust pin can

also be tied directly to the OUT pin which configures

the CM3003 as a 1.2V regulator.

An Enable control pin (EN) allows the device to be

placed in a low current mode.

The CM3003 devices are fully protected, offering both

overload current limiting, short circuit protection and

high temperature thermal shutdown. These devices

also includes reverse voltage protection that minimizes

any reverse current flow back into the output pin.

The CM3003 devices are housed in a space saving, 8-

pin power SOIC packages which has been thermally

enhanced (integral leadframe) to ensure maximum

junction to ambient power dissipation.

The CM3003 devices are available with optional lead-

free finishing.

Typical Application Circuit

Simplified Electrical Schematic

2.2V - 5.5V

VIN

10µF

GND

CM3003

1.8V/2.5V@1.5A

IN

OUT

VOUT

2.2V-5.5V

IN

Controller

Over Current

EN

Short Circuit

Over Temp

EN

ADJ

GND

100nF 10µF

1.2V Reference

Voltage

+ EN

-

2.5V Output when ADJ = GND

Automatically selects Adjustable Output

(when external resistors are present)

GND

Fixed

Adj

130K

120K

1.5 AMP

OUT

ADJ

© 2004 California Micro Devices Corp. All rights reserved.

01/15/04 430 N. McCarthy Blvd., Milpitas, CA 95035-5112

L Tel: 408.263.3214 L Fax: 408.263.7846 L www.calmicro.com

1

Share Link: