A3903 データシートの表示（PDF） - Allegro MicroSystems
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A3903 Datasheet PDF : 8 Pages
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A3903
Low Voltage DC Motor Driver
Functional Block Diagram
VREF
VBG
CHARGE
R1
PUMP
VSET
R2
3R
OUTA OUTB
R
VDD
VCP
3R
R
VSET
OUTA
3 to 5.5V
10 MF
Sink
Drive
IN1
Sink
Drive
OUTB
GND
IN2
Control Logic
Terminal Diagram
OUTB 1
GND 2
VDD 3
OUTA 4
8 IN2
7 IN1
6 VREF
5 VSET
(Top View)
Number
1
2
3
4
5
6
7
8
Name
OUTB
GND
VDD
OUTA
VSET
VREF
IN1
IN2
Description
Motor terminal
Ground
Input supply
Motor terminal
Select source-side output voltage
Bandgap reference
Control logic input
Control logic input
Allegro MicroSystems, Inc.
3
115 Northeast Cutoff
Worcester, Massachusetts 01615-0036 U.S.A.
1.508.853.5000; www.allegromicro.com
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