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National Semiconductor - synchronous SIMPLE SWITCHER buck regulator

Numéro de référence LM2853
Description synchronous SIMPLE SWITCHER buck regulator
Fabricant National Semiconductor 
Logo National Semiconductor 





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LM2853 fiche technique
www.DataSheet4U.com
October 2006
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
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 µA
n Internal 40 mMOSFET 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
Efficiency vs Load Current (VOUT = 3.3V)
20201502
20201501
SIMPLE SWITCHER® is a Registered Trademark of National Semiconductor Corporation.
© 2006 National Semiconductor Corporation DS202015
www.national.com

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