LM2852_14 Datasheet, PDF (1/25 Pages) Texas Instruments – 2A 500/1500kHz Synchronous SIMPLE SWITCHER® Buck Regulator

LM2852
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SNVS325C – JANUARY 2005 – REVISED OCTOBER 2006
LM2852 2A 500/1500kHz Synchronous SIMPLE SWITCHER® Buck Regulator
Check for Samples: LM2852
FEATURES
1
•2 Input Voltage Range of 2.85 to 5.5V
• Factory EEPROM Set Output Voltages from
0.8V to 3.3V in 100mV Increments
• Maximum Load Current of 2A
• Voltage Mode Control
• Internal Type-Three Compensation
• Switching Frequency of 500kHz or 1.5MHz
• Low Standby Current of 10µA
• Internal 60 mΩ MOSFET Switches
• Standard Voltage Options
0.8/1.0/1.2/1.5/1.8/2.5/3.3 Volts
DESCRIPTION
The LM2852 SIMPLE SWITCHER® synchronous
buck regulator is a high frequency step-down
switching voltage regulator capable of driving up to a
2A load with excellent line and load regulation. The
LM2852 can accept an input voltage between 2.85V
and 5.5V and deliver an output voltage that is factory
programmable from 0.8V to 3.3V in 100mV
increments. The LM2852 is available with a choice of
two switching frequencies - 500kHz (LM2852Y) or
1.5MHz (LM2852X). It also features internal, type-
three compensation to deliver a low component count
solution. The exposed-pad HTSSOP-14 package
enhances the thermal performance of the LM2852.
APPLICATIONS
• Low Voltage Point of Load Regulation
• Local Solution for FPGA/DSP/ASIC Core
Power
• Broadband Networking and Communications
Infrastructure
• Portable Computing
Typical Application Circuit
V_IN = 3.3V
C_IN = 22 PF
PVIN
AVIN
EN
SS
LM2852Y ^SNS
SW
SGND PGND
C_SS = 2.7 nF
L_O = 10 PH
V_OUT = 2.5V
I_LOAD = 0A to 2A
+ _{CO = 100 PF}
1
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Texas Instruments semiconductor products and disclaimers thereto appears at the end of this data sheet.
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2
PRODUCTION DATA information is current as of publication date.
Products conform to specifications per the terms of the Texas
Instruments standard warranty. Production processing does not
necessarily include testing of all parameters.
Copyright © 2005–2006, Texas Instruments Incorporated