A4953 View Datasheet(PDF) - Allegro MicroSystems
Part Name
Description
MFG CO.
'A4953' PDF : 11 Pages View PDF
A4952 and
A4953
Full-Bridge DMOS PWM Motor Drivers
Characteristic Performance
PWM Control Timing Diagram
VIN(1)
IN1
GND
VIN(1)
IN2
GND
+IREG
IOUT(x)
0A
-IREG
Forward/
Fast Decay
Reverse/
Fast Decay
Forward/
Slow Decay
Reverse/
Slow Decay
PWM Control Truth Table
IN1
IN2
10×VS > VREF
0
1
False
1
0
False
0
1
True
1
0
True
1
1
False
0
0
False
Note: Z indicates high impedance.
OUT1
L
H
H/L
L
L
Z
OUT2
H
L
L
H/L
L
Z
Function
Reverse
Forward
Chop (mixed decay), reverse
Chop (mixed decay), forward
Brake (slow decay)
Coast, enters Low Power Standby mode after 1 ms
Allegro MicroSystems, LLC
4
115 Northeast Cutoff
Worcester, Massachusetts 01615-0036 U.S.A.
1.508.853.5000; www.allegromicro.com
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