LM2853 datasheet(2/18 Pages) TI

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LM2853

3A 550 kHz Synchronous SIMPLE SWITCHER® Buck

Regulator

General Description

The LM2853 synchronous SIMPLE SWITCHER® 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

Input voltage range of 3.0V to 5.5V

Factory EEPROM set output voltages from 0.8V to 3.3V

in 100 mV increments

Maximum load current of 3A

Voltage Mode Control

Internal type-three compensation

Switching frequency of 550 kHz

Low standby current of 12 µA

Internal 40 m

Ω MOSFET switches

Standard voltage options

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

Exposed pad TSSOP-14 package

Applications

Low voltage point of load regulation

Local solution for FPGA/DSP/ASIC core power

Broadband networking and communications

infrastructure

Typical Application Circuit

20201502

Efficiency vs Load Current (V

OUT = 3.3V)

20201501

SIMPLE SWITCHER® is a Registered Trademark of National Semiconductor Corporation.

October 2006

DS202015

LM2853 bảng dữ liệu(PDF) 2 Page - Texas Instruments