LB11946 データシートの表示（PDF） - SANYO -> Panasonic

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LB11946

PWM Current Control Stepping Motor Driver

SANYO -> Panasonic 

LB11946

SLOW DECAY Current Path

The reregenerative current at upper-side transistor switching operates

Current path at output ON

Regenerative current

at upper-side transistor OFF

Motor current I

I = VE/Re

OUTA

ON

constant

I

SBD

SBD

ON

OFF

OUTA

VBB

Output OFF

VE

Sensing voltage comparator

VREF

Re

VREF

Internal reference voltage

3.04 by setting voltage circuit

Fig.1

FAST DECAY Current Path

Current path at output ON

Current path at Fast DECAY

OUTA

ON

OFF

SBD

SBD

ON

OFF

OUTA

VBB

VE

Sensing voltage comparator

VREF

Re

VREF

3.04

Fig.2

No.7946-10/14

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