LB1946

No.7115-11/16

Current Path in Slow Decay Mode

Regenerative current during upper-side transistor switching operation

Current Path in Fast Decay Mode

VBB

ON

OFF

OUTA

ON

OUTA

SBD

I

SBD

VE

Re

VREF

Figure 1

Sense voltage comparator

Constant

Regenerative current

when upper-side transistor is off

Motor current I

I=VE/RE

Current path when output is on

Output OFF

Internal reference voltage generated

by setting voltage circuit

VREF

3.04

ILB01480

VBB

ON

OFF

OUTA

OUTA

SBD

SBD

Re

VREF

Sense voltage comparator

Current path in fast decay mode

Current path when output is on

ON

OFF

VREF

3.04

ILB01481