LM2853MH-0.8 Datasheet

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LM2853 3A 550 kHz Synchronous SIMPLE SWITCHER

庐

Buck Regulator

October 2006

LM2853

3A 550 kHz Synchronous SIMPLE SWITCHER

庐

Buck

Regulator

General Description

The LM2853 synchronous SIMPLE SWITCHER

庐

buck regu-

lator is a 550 kHz step-down switching voltage regulator

capable of driving up to a 3A load with excellent line and load

regulation. The LM2853 accepts an input voltage between

3.0V and 5.5V and delivers a customizable output voltage

that is factory programmable from 0.8V to 3.3V in 100mV

increments. Internal type-three compensation enables a low

component count solution and greatly simplifies external

component selection. The exposed-pad TSSOP-14 package

enhances the thermal performance of the LM2853.

Features

n

Input voltage range of 3.0V to 5.5V

n

Factory EEPROM set output voltages from 0.8V to 3.3V

in 100 mV increments

n

Maximum load current of 3A

n

Voltage Mode Control

n

Internal type-three compensation

n

Switching frequency of 550 kHz

n

Low standby current of 12 碌A

n

Internal 40 m鈩?MOSFET switches

n

Standard voltage options

0.8/1.0/1.2/1.5/1.8/2.5/3.0/3.3 volts

n

Exposed pad TSSOP-14 package

Applications

n

Low voltage point of load regulation

n

Local solution for FPGA/DSP/ASIC core power

n

Broadband networking and communications

infrastructure

Typical Application Circuit

20201502

Efficiency vs Load Current (V

OUT

= 3.3V)

20201501

SIMPLE SWITCHER

庐

is a Registered Trademark of National Semiconductor Corporation.

漏 2006 National Semiconductor Corporation

DS202015

www.national.com

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