Preliminary Data Sheet
Subject to Change without Notice
November 4, 2005
A3950
DMOS Full-Bridge Motor Driver
Timing Diagram: Overcurrent Control
VOUTA
VOUTB High-Z
IPEAK
IOUTx IOCP
ENABLE,
Source
or Sink
BLANK
Charge Pump
Counter
NFAULT
tBLANK
Motor lead
short condition
tOCP
Normal dc
motor capacitance
A3950DS
Allegro MicroSystems, Inc.
5
115 Northeast Cutoff, Box 15036
Worcester, Massachusetts 01615-0036 (508) 853-5000
www.allegromicro.com