LP1130B-00

Apr.-2018

www.lowpowersemi.com

Page 2 of 5

Preliminary Datasheet

LP1130B

Functional Pin Description

Package Type

Pin Configurations

SOP-8

4

3

2

1

7

5

6

BST

VIN

VCC

EN

PWM

PGND

SWN

8

SWN

Pin

Name

Description

1

BST

Upper MOSFET Floating Bootstrap Supply. A capacitor connected between BST and

SW pins holds this bootstrap voltage for the high-side MOSFET as it is switched. The

recommended capacitor value is between 100nF and 1.0μF. An external diode is

required with the LP1130B.

2

PWM

Logic-Level Input. This pin has primary control of the drive outputs.

3

EN

Active high output enable. When low, normal operation is disabled.

4

VCC

Input Supply. A 1.0μF ceramic capacitor should be connected from this pin to PGND.

5,6

SWN

Switch Node. Connect to the source of the upper MOSFET.

7

PGND

Power Ground. Should be closely connected to the source of the lower MOSFET.

8

VIN

Source for the upper MOSFET