2

µPD4721

BLOCK DIAGRAM/PIN CONFIGURATION (Top View)

Note 1. VDD and VSS are output pins stepped up internally. These pins should not be loaded directly.

2. Capacitors C1 to C5 with a breakdown voltage of 20 V or higher are recommended. And it is

recommended to insert the capacitor that is 0.1

µF to 1 µF between VCC and GND.

3. If VCHA is kept low level (in 5 V mode), capacitor C5 is not necessary.

4. The pull-up resistors at driver input are active resistors.

1

2

3

4

5

6

7

8

9

10

20

19

18

17

16

15

14

13

12

11

DIN1

DIN2

ROUT1

ROUT2

STBY

VCHA

DOUT1

DOUT2

RIN1

RIN2

VDD

C1+

VCC

C1–

C5+

C5–

C4+

GND

C4–

VSS

+10 V

C3

C1

C5

–10 V

+

C2

C4

+

+

+

Note 4

300

Ω

300

Ω

5.5 k

Ω

5.5 k

Ω

+3.3 V

or

+5 V

+