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A3950 Datasheet(PDF) 3 Page - Allegro MicroSystems

Part No. A3950
Description  DMOS Full-Bridge Motor Driver
Download  12 Pages
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Manufacturer  ALLEGRO [Allegro MicroSystems]
Direct Link  http://www.allegromicro.com
Logo ALLEGRO - Allegro MicroSystems

A3950 Datasheet(HTML) 3 Page - Allegro MicroSystems

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DMOS Full-Bridge Motor Driver
A3950
3
Allegro MicroSystems, Inc.
115 Northeast Cutoff, Box 15036
Worcester, Massachusetts 01615-0036 (508) 853-5000
www.allegromicro.com
UVLO
STB
STG
TSD Warning
VBB
OUTA
OUTB
SENSE
Low-Side
Gate Supply
Charge
Pump
Motor Lead
Protection
Pad
Control Logic
Bias
Supply
GND
GND
SLEEP
NFAULT
PHASE
ENABLE
VDD
5 kΩ
5 kΩ
MODE
VREG
0.22 μF
25 V
0.1 μF
0.1 μF
0.1 μF
100 μF
OUTA
VBB
VCP
Load Supply
CP2
CP1
OUTB
SENSE
Functional Block Diagram
Terminal List Table
Name
Number
Description
EU
LP
NFAULT
15
1
Fault output, open drain
MODE
16
2
Logic input
PHASE
1
3
Logic input for direction control
GND
2, 12
4,13
Ground
SLEEP
3
5
Logic input
ENABLE
4
6
Logic input
OUTA
6
7
DMOS full-bridge output A
SENSE
7
8
Power return
VBB
8
9
Load supply voltage
OUTB
9
10
DMOS full-bridge output B
CP1
10
11
Charge pump capacitor terminal
CP2
11
12
Charge pump capacitor terminal
VCP
13
14
Reservoir capacitor terminal
VREG
14
15
Regulator decoupling terminal
NC
5
16
No connection
Pad
Exposed pad for thermal dissipation connect to GND pins


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