LM26001B

SW

SW

BOOT

FB

COMP

VDD

GND

FPWM

FREQ

SS

SYNC

EN

PGOOD

VIN

2

3

13

9

14

4

10

6

11

5

8

7

15

16

VIN

VOUT

VIN

VBIAS

1

12

C1

C5

R3

C8

R5

L

C4

R2

R1

C6

C3

R4

D1

VDD

17

EP

R6

EN

SYNC

+

LM26001B

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SNVS491B – MAY 2007 – REVISED APRIL 2013

LM26001B 1.5A Switching Regulator with High Efficiency Sleep Mode

Check for Samples: LM26001B

1

FEATURES

DESCRIPTION

The LM26001B is a switching regulator designed for

2

•

High Efficiency Sleep Mode

the high efficiency requirements of applications with

•

40 µA Typical Iq in Sleep Mode

stand-by modes. The device features a low-current

•

10 µA Typical Iq in Shutdown Mode

sleep mode to maintain efficiency under light-load

conditions and current-mode control for accurate

•

3.0V Minimum Input Voltage

regulation over a wide input voltage range. Quiescent

•

4.0V to 18V Continuous Input Range

current is reduced to 10 µA typically in shutdown

•

2.0% Reference Accuracy

mode and less than 40 µA in sleep mode. Forced

PWM mode is also available to disable sleep mode.

•

Cycle-by-Cycle Current Limit

•

Adjustable Frequency (150 kHz to 500 kHz)

The LM26001B can deliver up to 1.5A of continuous

load current with a fixed current limit, through the

•

Synchronizable to an External Clock

internal N-channel switch. The part has a wide input

•

Power Good Flag

voltage range of 4.0V to 18V and can operate with

•

Forced PWM Function

input voltages as low as 3V during line transients.

•

Adjustable Soft-Start

Operating frequency is adjustable from 150 kHz to

•

HTSSOP-16 Exposed Pad Package

500

kHz

with

a

single

resistor

and

can

be

synchronized to an external clock.

•

Thermal Shut Down

Other features include Power good, adjustable soft-

APPLICATIONS

start, enable pin, input under-voltage protection, and

an internal bootstrap diode for reduced component

•

Automotive Telematics

count.

•

Navigation Systems

•

In-Dash Instrumentation

•

Battery Powered Applications

•

Stand-by Power for Home Gateways/Set-Top

Boxes

Typical Application Circuit

1

Please be aware that an important notice concerning availability, standard warranty, and use in critical applications of

Texas Instruments semiconductor products and disclaimers thereto appears at the end of this data sheet.

2

All trademarks are the property of their respective owners.

PRODUCTION DATA information is current as of publication date.

Copyright © 2007–2013, 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.