Exposed Pad

Connect to GND

GND 8

VIN 1

VIN 2

PGOOD 3

EN 4

SS 5

COMP 6

FB 7

9 FREQ

10 FPWM

11 SYNC

12 VBIAS

13 VDD

14 BOOT

15 SW

16 SW

LM26001, LM26001-Q1

www.ti.com

SNVS430I – MAY 2006 – REVISED MARCH 2015

5 Pin Configuration and Functions

16-Pin

HTSSOP Package

Top View

Pin Functions

PIN

I/O

DESCRIPTION

NO.

NAME

1

VIN

A

Power supply input

2

VIN

A

Power supply input

3

PGOOD

O

Power Good pin. An open-drain output which goes high when the output voltage is greater than

92% of nominal.

4

EN

I

Enable is an analog level input pin. When pulled below 0.8 V, the device enters shutdown mode.

5

SS

A

Soft-start pin. Connect a capacitor from this pin to GND to set the soft-start time.

6

COMP

A

Compensation pin. Connect to a resistor capacitor pair to compensate the control loop.

7

FB

A

Feedback pin. Connect to a resistor divider between Vout and GND to set output voltage.

8

GND

G

Ground

9

FREQ

A

Frequency adjust pin. Connect a resistor from this pin to GND to set the operating frequency.

10

FPWM

I

FPWM is a logic level input pin. For normal operation, connect to GND. When pulled high, sleep

mode operation is disabled.

11

SYNC

I

Frequency synchronization pin. Connect to an external clock signal for synchronized operation.

SYNC must be pulled low for non-synchronized operation.

12

VBIAS

A

Connect to an external 3-V or greater supply to bypass the internal regulator for improved efficiency.

If not used, VBIAS should be tied to GND.

13

VDD

A

The output of the internal regulator. Bypass with a minimum 1.0-µF capacitor.

14

BOOT

A

Bootstrap capacitor pin. Connect a 0.1-µF minimum ceramic capacitor from this pin to SW to

generate the gate drive bootstrap voltage.

15

SW

A

Switch pin. The source of the internal N-channel switch.

16

SW

A

Switch pin. The source of the internal N-channel switch.

EP

EP

G

Exposed Pad thermal connection. Connect to GND.

Copyright © 2006–2015, Texas Instruments Incorporated

Submit Documentation Feedback

3

Product Folder Links: LM26001 LM26001-Q1