Data Sheet G12649EJ5V0DS00

13

μPC494

3) Step-down Chopper

VOUT

VCC

Output

Control

GND

E2

E1

C1

C2

–

+VCC

To EA II

(Over Current

Protection)

To EA I

+

+

(40 V MAX.)

(11)

(9)

(8)

(10)

(7)

(13)

(12)

Remark The dotted line indicates the connection in case of large current.

EXAMPLE OF MASTER-SLAVE CONNECTION

To synchronize

μ PC494 ICs, connect the pin 6 (RT) of a slave IC to pin 14 (Ref Out) of the same IC, and connect

both CT pins of master and slave ICs after confirming oscillator of slave IC is stopped.

+VCC

(M)

VCC

GND

Ref Out

RT

CT

(S)

VCC

GND

Ref Out

RT

CT

RT

CT

(M) : Master

(S) : Slave

(12)

(5)

(6)

(7)

(14)

(12)

(5)

(6)

(7)

(14)