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MCZ5303SG, MCZ5303SH Application Manual Vol. 1.0

CAT.No. 1H0400-1E

– 6 –

3 Pin Assignment and Pin Function List

3.1 Pin Assignment Diagram

Figure 3.

MCZ5303SG : SOP16

Figure 4.

MCZ5303SH : SOP7J

3.2 Pin Function List

Symbol

Pin No.

Function

SOP16

SOP7J

LSin

1

-

LSout

2

-

Input main line sensing terminal output:

Input main line voltage sensing comparator output.

GND

3

1

GND terminal:

GND connection terminal for IC.

COMPin

4

2

Burst control comparator input terminal:

Terminal to control burst operation by detecting the voltage.

COMPout

5

3

Comparator output terminal for burst operation:

Used to adjust the hysteresis of the burst control comparator.

KSST

6

-

Output terminal for SST reset:

Terminal to reset the SST terminal by synchronizing with burst.

KAS

7

-

Becomes Lo in standby mode or active standby mode.

SSC

8

-

Soft start circuit switching terminal:

Control terminal to switch the time constant of soft start at the time of burst operation.

KVc1

9

4

Vcc supply terminal:

Supplies power to the control IC.

STBY

10

-

Standby mode switching terminal:

Switches to burst mode. Burst mode with terminal open.

ASin

11

-

AS switching signal input terminal:

Input terminal of active standby signals.

Vcc

12

5

at the time of start, and a voltage is supplied from the VW terminal after start.

VW

13

6

Vcc winding voltage input terminal:

Terminal for voltage input from the Vcc winding. Has an 18.5V dropper.

NC

14,15

-

Unused terminal

Vin

16

7

terminal at the time of start, and the start circuit becomes off when Vw exceeds 19.5V.

Table 1. Pin Function List

1. GND

2. COMPin

3. COMPout

4. KVc1

5. Vcc

6. VW

7. Vin