LB1975 datasheet(6/12 Pages) SANYO

6 / 12 page

No. 6087-6/12

LB1975

Pin Functions

Pin No.

Pin name

Pin voltage

Pin function

Equivalent circuit

Power supply for blocks other than

the output block

A11953

VCC

4.5 V to 6.7 V

Shunt regulator output pin (7 V)

VREG

0.0 V to 7.3 V

A11954

VCC

20 k

Ω

3.8 k

Ω

Start/stop control pin

Low: start

High or Open: stop

Typical threshold voltage for

VCC = 5 V:

approx. 2.8 V (low to high)

approx. 2.3 V (high to low)

S/S

0.0 V to VCC

A11955

VCC

20 k

Ω

3.8 k

Ω

Forward/reverse pin

Low: forward

High or Open: reverse

Typical threshold voltage for

VCC = 5 V:

approx. 2.8 V (low to high)

approx. 2.3 V (high to low)

F/R

0.0 V to VCC

A11956

VCC

200

Ω

0.5 V

Output pin 1

Output pin 2

Output pin 3

Output current detect pin. Connect

resistor RF between this pin and

ground. Output current is limited to

value set with VRF/Rf. (Current limiter

operation)

OUT1

OUT2

OUT3

0.0 V to VCC

Output block power supply

Output block ground

GND3

Continued on next page.

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