LM5109 National Semiconductor, LM5109 Datasheet - Page 2

• Manufacturer Part Number: LM5109
• Description: 100V / 1A Peak Half Bridge Gate Driver
• Manufacturer: National Semiconductor

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SO-8
Connection Diagrams
Ordering Information
Pin Description
Note: For LLP-8 package it is recommended that the exposed pad on the bottom of the LM5109 be soldered to ground plane on the PCB board and the
ground plane should extend out from underneath the package to improve heat dissipation.
1
2
3
4
5
6
7
8
Ordering Number
LM5109MA
LM5109MAX
LM5109SD
LM5109SDX
Pin #
LLP-8
1
2
3
4
5
6
7
8
V
HI
LI
V
LO
HS
HO
HB
DD
SS
Name
Package Type
SOIC-8
SOIC-8
LLP-8
LLP-8
Positive gate drive supply
High side control input
Low side control input
Ground reference
Low side gate driver output
High side source connection
High side gate driver output
High side gate driver positive
supply rail
20150502
Description
FIGURE 2.
NSC Package Drawing
M08A
M08A
SDC08A
SDC08A
2
Locally decouple to V
as close to IC as possible.
The LM5109 HI input is compatible with TTL input thresholds.
Unused HI input should be tied to ground and not left open
The LM5109 LI input is compatible with TTL input thresholds.
Unused LI input should be tied to ground and not left open.
All signals are referenced to this ground.
Connect to the gate of the low side N-MOS device.
Connect to the negative terminal of the bootstrap capacitor
and to the source of the high side N-MOS device.
Connect to the gate of the low side N-MOS device.
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.
Application Information
SS
using low ESR/ESL capacitor located
Shipped in anti static rails
2500 shipped as Tape & Reel
1000 shipped as Tape & Reel
4500 shipped as Tape & Reel
Supplied As
20150503