LB1997 datasheet(8/9 Pages) SANYO

8 / 9 page

LB1997

No. 5978-8/9

Pin number

Pin name

Pin voltage

Equivalent circuit

Pin function

2V to 3V

PWR GND

R F

8C C

BRAKE

Continued from preceding page

Control reference voltage supply

pin. Determines control start

voltage.

Speed control voltage supply pin

V type control technique

VC > VCREF : Forward

VC < VCREF : Slowdown

(Reverse-blocking circuit built in to

prevent reverse rotation.)

W phase output

Output transistor GND

V phase output

U phase output

Upper side output PNP transistor

collector pin (common for all 3

phases). For current detection,

connect resistor between VCC3

pin and RF pin. Constant current

control and current limiter works

by detecting this voltage.

V type control/single-side control

switching pin

CC:

High –> Single-side control

Low/Open –> V type control

Short brake pin

BRAKE:

High –> Short brake operation

Low/Open –> Motor drive operation

VCREF

0V to VCC1

WOUT

VOUT

UOUT

µA

100

µA

100

µA

VCC1

200

Ω

10 k

Ω

15 k

Ω

30 k

Ω

30 k

Ω

200

Ω

A11189

VCC2

3.9

Ω

3.9

Ω

A11190

VCC1

8 k

Ω

8 k

Ω

50 k

Ω

75 k

Ω

A11191

100

µA

VCC1

50 k

Ω

75 k

Ω

A11192

LB1997 Datasheet(PDF) 8 Page - Sanyo Semicon Device

LB1997 Datasheet(HTML) 8 Page - Sanyo Semicon Device

Html Pages

1 2 3 4 5 6 7 8 9

Datasheet Download

Link URL