LB1947 데이터 시트보기 (PDF) - SANYO -> Panasonic

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LB1947

PWM Current Control Type Bidirectional Motor Driver

SANYO -> Panasonic 

Pin Function

Pin No.

Pin name

1

OUTA

3

OUTA

2

E

4

VI

5

ST

8

IN1

9

IN2

6

VBB

7

VCC

10

VREF

LB1947

Output pin.

Function

Sense voltage control pin.

High: sense voltage is 2/5 of VREF

Low: sense voltage is 1/5 of VREF

High: circuit operation ON

Low: standby mode

High: rotation mode

Low: brake mode

High: reverse mode

Low: forward mode

Motor power supply voltage.

Logic power supply voltage.

Output current setting reference pin.

Setting range: 0 to (VCC−2V)

11 CR

12 MD

13 GND

Oscillator with self-excitation.

Current attenuation switching pin.

Low : FAST DECAY

High: SLOW DECAY

M : MIX DECAY

M is set by external power supply voltage.

Range : 1.1 to 4.0V

Ground pin

Equivalent circuit

VCC

100µA

50kΩ

4

40kΩ

VI

VCC

5µA

3s 1s

40kΩ

10

VREF

No.6192-5/9

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