CM3131-11SB datasheet, PDF - EEWORLD Datasheet

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CM3131-11SB: DescriptionSPECIALTY ANALOG CIRCUIT, PDSO8; Categoryaccessories; File Size359KB，10 Pages; ManufacturerCALMIRCO; Websitehttp://www.calmicro.com/

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CM3131-11SB Overview

SPECIALTY ANALOG CIRCUIT, PDSO8

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CM3131

Triple Linear Voltage Regulator for DDR-I/-II Memory

Features

•

Integrated power solution for DDR-I and DDR-II

memory systems with few external components

Three all-linear regulators for V

DDQ

, V

and

STBY

power supply applications

Lowest system cost and smallest footprint for

DDR power solutions

DDQ

regulator/driver utilizes external N-FET to

provide up to 15A current at 2.5V/1.8V

source/sink regulator provides up to 2A at

1.25V for DDR-I systems or 0.65A at 0.9V for

the DDR-II memory controller (not DDR-II

memory)

LDO standby regulator provides up to 500mA at

2.5V for DDR-I and at 1.8V for DDR-II systems

Can be ganged for higher current applications

Over temperature and reverse current protection

Over current protection for V

STBY

and V

regulator

Available in 8 lead and 14 lead PSOP packages

Lead-free versions available

Product Description

The CM3131 family of all-linear regulators provides

an integrated power solution for DDR-I/-II memory

systems in both run-time and standby modes of

operation. The CM3131 is ideal for designs

incorporating both a main 3.3V and a standby (3.3V

or 5V) supply. The CM3131 features three

independent linear regulators for V

DDQ

, V

and V

STBY

supply regulation and will maintain an accuracy of

±1% across the operating temperature range.

The CM3131 is offered in two configurations. The

CM3131-01/11 drives a single external N-FET on a

single V

DDQ

rail. The CM3131-02 drives two external

unmatched N-FETs on two V

DDQ

rails. Each V

DDQ

rail

incorporates an adjustment pin (SENSE) to enable

setting V

DDQ

in the 2.2V to 2.8V range, supporting

DIMMs with different supply requirements or DDR-II

type devices.

The CM3131-01/11 is available in 8-lead PSOP

package and the CM3131-02 is available in 14-lead

PSOP package.

The CM3131 devices are also available with optional

lead-free finishing.

•

Applications

Desktop PCs, notebooks, and workstations

Set top boxes, digital TVs, printers

Embedded systems

Electrical Schematic

02/02/04

430 N. McCarthy Blvd., Milpitas, CA 95035-5112

Tel: 408.263.3214

Fax: 408.263.7846

www.calmicro.com

CM3131-11SB Related Products

	CM3131-11SB	CM3131	CM3131-02SB	CM3131-01SB	CM3131-02SH	CM3131-11SH	CM3131-01SH
Description	SPECIALTY ANALOG CIRCUIT, PDSO8	SPECIALTY ANALOG CIRCUIT, PDSO8	SPECIALTY ANALOG CIRCUIT, PDSO8	SPECIALTY ANALOG CIRCUIT, PDSO8	SPECIALTY ANALOG CIRCUIT, PDSO8	SPECIALTY ANALOG CIRCUIT, PDSO8	SPECIALTY ANALOG CIRCUIT, PDSO8

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