GND

FB

EN

SW

C1

R3

D1

L1

R2

R1

C2

C3

LM2832

LM2832

www.ti.com

SNVS455A – AUGUST 2006 – REVISED APRIL 2013

LM2832 High Frequency 2.0A Load - Step-Down DC-DC Regulator

Check for Samples: LM2832

1

FEATURES

DESCRIPTION

The LM2832 regulator is a monolithic, high frequency,

2

•

Input Voltage Range of 3.0V to 5.5V

PWM step-down DC/DC converter in a 6 Pin WSON

•

Output Voltage Range of 0.6V to 4.5V

and a 8 Pin eMSOP-PowerPAD package. It provides

•

2.0A Output Current

all the active functions to provide local DC/DC

conversion with fast transient response and accurate

•

High Switching Frequencies

regulation in the smallest possible PCB area. With a

–

1.6MHz (LM2832X)

minimum of external components, the LM2832 is

–

0.55MHz (LM2832Y)

easy to use. The ability to drive 2.0A loads with an

internal 150 m

Ω PMOS switch using state-of-the-art

–

3.0MHz (LM2832Z)

0.5 µm BiCMOS technology results in the best power

•

150m

Ω PMOS Switch

density available. The world-class control circuitry

•

0.6V, 2% Internal Voltage Reference

allows on-times as low as 30ns, thus supporting

exceptionally high frequency conversion over the

•

Internal Soft-Start

entire 3V to 5.5V input operating range down to the

•

Current Mode, PWM Operation

minimum output voltage of 0.6V. Switching frequency

•

Thermal Shutdown

is internally set to 550 kHz, 1.6 MHz, or 3.0 MHz,

•

Over Voltage Protection

allowing the use of extremely small surface mount

inductors and chip capacitors. Even though the

operating frequency is high, efficiencies up to 93%

APPLICATIONS

are easy to achieve. External shutdown is included,

•

Local 5V to Vcore Step-Down Converters

featuring an ultra-low stand-by current of 30 nA. The

•

Core Power in HDDs

LM2832 utilizes current-mode control and internal

compensation to provide high-performance regulation

•

Set-Top Boxes

over a wide range of operating conditions. Additional

•

USB Powered Devices

features include internal soft-start circuitry to reduce

•

DSL Modems

inrush current, pulse-by-pulse current limit, thermal

shutdown, and output over-voltage protection.

Typical Application Circuit

1

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2

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PRODUCTION DATA information is current as of publication date.

Copyright © 2006–2013, Texas Instruments Incorporated

Products conform to specifications per the terms of the Texas

Instruments standard warranty. Production processing does not

necessarily include testing of all parameters.