L9945 datasheet(104/144 Pages) STMICROELECTRONICS

Part #	L9945

Description	Automotive fully configurable 8-channel High/Low side MOSFET pre-driver suitable for 12 V and 24 V systems

PDF	144 Pages

Scroll/Zoom	100%

Manufacturer	STMICROELECTRONICS [STMicroelectronics]

Direct Link	http://www.st.com

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104 / 144 page

[12:10]

[9:7]

[6:4]

[3-1]

PUPD4...1: Pull up / Pull down status of CHx

This field consists of 3 bit encoding the current status of the gate charge / discharge current sources for the x-th channel. The

code depends on the output configuration:

High-Side with PFET:

•

100: IPD ON and IPU OFF -> transistor ON

•

010: IPD OFF and IPU ON -> transistor OFF

•

000: IPD OFF and IPU OFF -> output in three-state

•

Others: integrity of the output control is compromised

High-Side/Low-Side with NFET:

•

010: IPD ON and IPU OFF -> transistor OFF

•

001: IPD OFF and IPU ON -> transistor ON

•

000: IPD OFF and IPU OFF -> output in three-state

•

Others: integrity of the output control is compromised

Reset: 0000

Reset Condition: -

[0] PARITY: Parity bit, based on even parity calculation

0: If the number of 1 is odd

1: If the number of 1 is even

Reset: 0

Reset Condition: -

L9945

Functional description

DS12275 - Rev 10

page 104/144

L9945 Datasheet(PDF) 104 Page - STMicroelectronics