LM2852_16 Datasheet, PDF (1/27 Pages) Texas Instruments – Synchronous Simple Switcher Buck Regulator

Product
Folder
Sample &
Buy
Technical
Documents
Tools &
Software
Support &
Community
LM2852
SNVS325E – JANUARY 2005 – REVISED JANUARY 2016
LM2852 2A 500/1500 kHz Synchronous Simple Switcher® Buck Regulator
1 Features
•1 Input Voltage Range of 2.85 to 5.5 V
• Factory EEPROM Set Output Voltages from 0.8 V
to 3.3 V in 100-mV Increments
• Maximum Load Current of 2 A
• Voltage Mode Control
• Internal Type-Three Compensation
• Switching Frequency of 500 kHz or 1.5 MHz
• Low Standby Current of 10 µA
• Internal 60-mΩ MOSFET Switches
• Standard Voltage Options 0.8/1/1.2/1.5/1.8/2.5/3.3
V
2 Applications
• Low Voltage Point of Load Regulation
• Local Solution for FPGA/DSP/ASIC Core Power
• Broadband Networking and Communications
Infrastructure
• Portable Computing
space
Typical Application Circuit
VIN = 3.3V
CIN = 22 PF
PVIN
AVIN
EN
SS
LM2852Y ^SNS
SW
SGND PGND
CSS = 2.7 nF
LO = 10 PH
VOUT = 2.5V
ILOAD = 0A to 2A
+ _{CO = 100 PF}
3 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 2.85 V and
5.5 V and deliver an output voltage that is factory
programmable from 0.8 V to 3.3 V in 100-mV
increments. The LM2852 is available with a choice of
two switching frequencies –500 kHz (LM2852Y) or
1.5 MHz (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.
Device Information⁽¹⁾
PART NUMBER
PACKAGE
BODY SIZE (NOM)
LM2852
HTSSOP (14)
5.00 mm × 4.40 mm
(1) For all available packages, see the orderable addendum at
the end of the data sheet.
Efficiency vs I_LOAD
96
PVIN = 3.3V
94
92
90
88
86
84
0.1
1.0
10
I_LOAD (A)
1
An IMPORTANT NOTICE at the end of this data sheet addresses availability, warranty, changes, use in safety-critical applications,
intellectual property matters and other important disclaimers. PRODUCTION DATA.