Connection Diagrams

Ordering Information

Ordering Number

Package Type

NSC Package Drawing

Supplied As

LM5109AMA

SOIC-8

M08A

95 Units in anti static rails

LM5109AMAX

SOIC-8

M08A

2500 Units on Tape & Reel

LM5109ASD

LLP-8

SDC08A

1000 Units on Tape & Reel

LM5109ASDX

LLP-8

SDC08A

4500 Units on Tape & Reel

Pin Descriptions

Pin #

Name

Description

Application Information

SO-8

LLP-8

11

V

DD

Positive gate drive supply

Locally decouple to V

as close to IC as possible.

2

2

HI

High side control input

The HI input is compatible with TTL input thresholds. Unused

HI input should be tied to ground and not left open

3

3

LI

Low side control input

The LI input is compatible with TTL input thresholds. Unused

LI input should be tied to ground and not left open.

44

V

SS

Ground reference

All signals are referenced to this ground.

5

5

LO

Low side gate driver output

Connect to the gate of the low-side N-MOS device.

6

6

HS

High side source connection

Connect to the negative terminal of the bootstrap capacitor

and to the source of the high-side N-MOS device.

7

7

HO

High side gate driver output

Connect to the gate of the high-side N-MOS device.

8

8

HB

High side gate driver positive

supply rail

Connect the positive terminal of the bootstrap capacitor to HB

and the negative terminal of the bootstrap capacitor to HS.

The bootstrap capacitor should be placed as close to IC as

possible.

Note: For LLP-8 package it is recommended that the exposed pad on the bottom of the package be soldered to ground plane on the PCB and the ground

plane should extend out from underneath the package to improve heat dissipation.

20170202

20170203

FIGURE 2.

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