STA6940M Datasheet, PDF (15/19 Pages) Allegro MicroSystems – Brushed DC Motor Driver IC With PWM Control

STA6940M Brushed DC Motor Driver IC With PWM Control
Pin-out Diagram
2 4 6 8 10 12 14 16 18
Chamfer
1 3 5 7 9 11 13 15 17
(Top View)
Terminal List Table
Number Symbol
Function
1
VBB
Main supply input (motor supply)
2
OA
Motor terminal A
3
4
Sense1 Motor current sensing
5
IN1
Control mode setting (please see truth table)
6
IN2
7
VDD
Logic supply
8
PWM_REF Constant-current setting
9
OCP_REF Overcurrent setting
10
GND
Ground
11
Diag
PWM diagnostic and OCP output
12
CP2
13
CP1
Connection for charge pump
14
CP
15
Sense2 Motor overcurrent sensing
16
OB
Motor terminal B
17
18
VBB
Main supply input (motor supply)
*The VBB terminals, 1 and 18, are internally connected.
Allegro MicroSystems, Inc.
15
115 Northeast Cutoff
Worcester, Massachusetts 01615-0036 U.S.A.
1.508.853.5000; www.allegromicro.com