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151617181920

40

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28

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24

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21

11

Delay

SYSTEM CONTROL SEQUENCER

VRSTO

OSC

SS1 SS2 SS3

Figure 1 Block char

Table 1 terminal explanation

No. Symbol

Description

No.

Symbol

Description

1

PGND1

Ch1 power GND

(same potential as GND terminal)

21

PGND3

Ch3 power GND

(same potential as terminal GND)

2

DRV1B Ch1 Nch drive output terminal

22

DRV3B Ch3 Nch drive output terminal

3

LX1

Ch1 overcurrent detection terminal

23

LX3

Ch3 overcurrent detection terminal

4

DRV1A Ch1 Pch drive output terminal

24

DRV3A Ch3 Pch drive output terminal

5

VIN1

Ch1 power supply input terminal

25

VIN3

Ch3 power supply input terminal

6

OCP1

Ch1 overcurrent detection level

resistance connection terminal

26

OCP3

Ch3 overcurrent detection level resistance

connection terminal

7

FB1

Ch1 voltage detection terminal

27

FB3

Ch3 voltage detection terminal

8

FC1

Ch1 phase compensation terminal

28

FC3

Ch3 phase compensation terminal

9

SS1

Ch1 soft start adjustment capacity

connection terminal

29

SS3

Ch3 soft start adjustment capacity

connection terminal

10

GND

GND (0V connection)

30

GND

GND (0V connection)

11

RT

Frequency adjustment resistance

connection terminal

31

TEST1

Test terminal (Connect to GND)

12

SS2

Ch2 soft start adjustment capacity

connection terminal

32

TEST2

Test terminal (connect to GND)

13

FC2

Ch2 phase compensation terminal

33

CTL1

Ch1 control terminal

14

FB2

Ch2 voltage detection terminal

34

CTL2

Ch2 control terminal

15

OCP2

Ch2 overcurrent detection level resistance

connection terminal

35

CTL3

Ch3 control terminal

16

VIN2

Ch2 power supply input terminal

36

VCC

Power supply input terminal

17

DRV2A Ch2 Pch drive output terminal

37

RESET Reset output terminal

18

LX2

Ch2 overcurrent detection terminal

38

RSTDLY

Reset delay adjustment capacity

connection terminal

19

DRV2B Ch2 Nch drive output terminal

39

MONVCC VCC monitor terminal

20

PGND2

Ch2 power GND

(same potential as terminal GND)

40

PDET

Off latch signal output

※Please give to VCC+0.3V as an operation condition in all input terminals.

However, please do not exceed the absolute maximum rating as VCC=VIN1=VIN2=VIN3.