3973 Ver la hoja de datos (PDF) - Allegro MicroSystems
Número de pieza
componentes Descripción
Fabricante
3973 Datasheet PDF : 12 Pages
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3973
DUAL DMOS FULL-BRIDGE
MICROSTEPPING PWM MOTOR DRIVER
FUNCTIONAL BLOCK DIAGRAM
0.22 µF
0.22 µF
LOGIC
SUPPLY
15
VDD
VREG
22
CP2
3
CP1
2
2V
UVLO AND
FAULT
REGULATOR
DETECT
BANDGAP
CHARGE PUMP
MUX 14
6-BIT
LINEAR
DAC
6
+-
SENSE1
DMOS H-BRIDGE
VCP
OSCILATOR
OSC
24 OSC SELECT/
DIVIDER
PROGRAMMABLE
PWM TIMER
FIXED-OFF
BLANK
MIXED DECAY
CLOCK 11
DATA 12
STROBE 10
SERIAL
PORT
SLEEP 23
CONTROL
LOGIC
PHASE 1/2
SYNC. RECT. MODE
SYNC. RECT. DISABLE
MODE 1/2
GATE
DRIVE
DMOS H-BRIDGE
PROGRAMMABLE
PWM TIMER
2V
FIXED-OFF
BLANK
6
MIXED DECAY
REF 13
BUFFER
6-BIT
LINEAR
DAC
Dwg. FP-050-1
+-
67
GROUND
18 19
VCP
1
VBB1
5
LOAD
SUPPLY
0.22 µF
OUT1A
9
OUT1B
4
SENSE1
8
20
VBB2
0.1 µF
OUT2A
16
OUT2B
21
SENSE2
17
0.1 µF
115 Northeast Cutoff, Box 15036
2
Worcester, Massachusetts 01615-0036 (508) 853-5000
Copyright © 2000, Allegro MicroSystems, Inc.
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