LB1946 查看數據表（PDF） - SANYO -> Panasonic

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LB1946

Monolithic Digital IC PWM Current Control Stepping Motor Driver

SANYO -> Panasonic 

LB1946

Current Path in Slow Decay Mode

Regenerative current during upper-side transistor switching operation

Current path when output is on

Regenerative current

when upper-side transistor is off

OUTA

ON

Constant

Motor current I

I=VE/RE

ON

VBB

OFF

I

SBD

SBD

VE

Re

OUTA

Output OFF

Sense voltage comparator

VREF

VREF

3.04

Internal reference voltage generated

by setting voltage circuit

Figure 1

ILB01480

Current Path in Fast Decay Mode

Current path when output is on

Current path in fast decay mode

OUTA

ON

OFF

SBD

ON

OFF

SBD

OUTA

VBB

Sense voltage comparator

VREF

Re

VREF

3.04

ILB01481

No.7115-11/16

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