M62254FP

REJ03F0244-0200 Rev.2.00 Jun 16, 2008

Page 2 of 11

Pin Arrangement

(Top view)

1

2

3

4

6

8

10

12

5

7

9

11

13

14

15

16

17

18

36

35

34

33

31

29

27

25

32

30

28

26

24

23

22

21

20

19

Outline: PRSP0036GA-A (36P2R-A)

GND

WD

Ctd

P.C

TC

CS

CK

DI

LED1

LED2

LED3

P.GND

CD

IN1

IN2

IN3

IN4

MSW1

MSW2

SSW

REF

RESET

M62254FP

Pin Description

Pin No.

Pin Name

Function

24

CS

The serial data input pin which used to receives 8-bit wide serial data.

23

CK

The shift clock input pin which takes the input signal of DI pin to 8-bit shift register by the

rising edge of the clock signal.

22

DI

When CS pin is "Low", this pin can receive the data into the 8-bit shift register. The each

bit will be latched at rising edge of the clock signal.

17

The output pin of the amplified A/D input.

11

REF

The reference voltage output pin of the A/D converter.

12 to 15

IN1 to IN4

The A/D converter input pin.

16

The current sense input pin.

10

CD

The input pin for the current detection to feedback of sub-switch driver.

9

SSW

The sub-switch driver output pin.

7, 8

MSW1, MSW2

The main switch driver output pin. (Open collector)

3 to 5

LED1 to LED3

The LED driver output pin. (Open collector)

19

The stabilized +5 V output pin.

21

The pre-drive pin which used to connect the external PNP Tr.

20

Vcc

The power supply pin.

29

The current detection input pin.

30

The input pin for current detection adjustment.

28

The voltage detection input pin.

32

P.C

The feedback pin for voltage and current control.

2, 33

The inverted input pin of OP-amp.

1, 34

The non-inverted input pin of OP-amp.

36, 35

The OP-amp. output pin. (Open collector output)

31

GND

The ground pin.

6

P.GND

The ground pin of power unit. (Main switch driver and LED driver)

18

RESET

27

TC

The pin used to connect capacitor to determine the time constant of WDT.

26

WD

The input pin of the WDT.

25

Ctd

The pin used to connect capacitor to determine delay time the output after the Reset.