A3977SEDTR-T 查看數據表（PDF） - Allegro MicroSystems

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产品描述 (功能)

生产厂家

A3977SEDTR-T

Microstepping DMOS Driver with Translator

Allegro MicroSystems 

A3977

Microstepping DMOS Driver with Translator

FUNCTIONAL BLOCK DIAGRAM

LOGIC

SUPPLY

VDD

REF.

SUPPLY

REF

RC1

STEP

DIR

RESET

MS 1

MS 2

HOME

SLEEP

VPFD

SR

ENABLE

PFD

RC 2

UVLO

AND

FAULT

2V

REGULATOR

BANDGAP

VREG

CP2 CP1

CHARGE

PUMP

DAC

SENSE1 VCP

DMOS H BRIDGE

+-

PWM LATCH

BLANKING

MIXED DECAY

4

PWM TIMER

DMOS H BRIDGE

PWM TIMER

4

PWM LATCH

BLANKING

MIXED DECAY

DAC

+-

VCP

VBB1

LOAD

SUPPLY

OUT 1A

OUT1B

SENSE1

VBB2

OUT 2A

OUT2B

SENSE2

Dwg. FP-050-2

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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