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3974 데이터시트(PDF) 2 Page - Allegro MicroSystems

부품명 3974
상세설명  DMOS DUAL FULL-BRIDGE PWM MOTOR DRIVER
PDF  12 Pages
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제조업체  ALLEGRO [Allegro MicroSystems]
홈페이지  http://www.allegromicro.com
Logo ALLEGRO - Allegro MicroSystems

3974 데이터시트(HTML) 2 Page - Allegro MicroSystems

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3974
DMOS DUAL FULL-BRIDGE
PWM MOTOR DRIVER
115 Northeast Cutoff, Box 15036
Worcester, Massachusetts 01615-0036 (508) 853-5000
2
FUNCTIONAL BLOCK DIAGRAM
Copyright © 2001 Allegro MicroSystems, Inc.
CHARGE PUMP
BANDGAP
VDD
CREG
TSD
UNDER-
VOLTAGE &
FAULT DETECT
CHARGE
PUMP
BANDGAP
REGULATOR
VDD
VBB1
+
LOGIC
SUPPLY
VREG
LOAD
SUPPLY1
SLEEP
MODE
CONTROL LOGIC
PROGRAMMABLE
PWM TIMER
SENSE1
RS1
FIXED OFF
BLANK
DECAY
ENABLE1
OSC
CLOCK
DATA
STROBE
REFERENCE
BUFFER &
DIVIDER
OUT1A
OUT1B
REF1
VREF
CS1
PROGRAMMABLE
PWM TIMER
FIXED OFF
BLANK
DECAY
Dwg. FP-048-1
CONTROL LOGIC
SENSE2
RS2
ENABLE2
REFERENCE
BUFFER &
DIVIDER
OUT2A
OUT2B
REF2
VREF2
CS2
VBB2
LOAD
SUPPLY2
+
SERIAL
PORT
CHARGE
PUMP
TO PWM TIMER
ZERO CURRENT DETECT
CURRENT SENSE
ZERO CURRENT DETECT
CURRENT SENSE



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