R2A20114AFP/ASP

Preliminary

R03DS0051EJ0100 Rev.1.00

Page 3 of 16

Aug 29, 2011

Pin Arrangement of R2A20114AFP

N.C.

VCC

CS1

N.C.

CSO2

CSO1

E-DELAY

N.C.

VREF

AGND

FMR

BO

CS2

VAC

PD

N.C.

FMC

N.C.

N.C.

IRAMP

1

10

9

8

7

6

5

4

3

2

30

21

22

23

24

25

26

27

28

29

(Top view)

Pin Functions of R2A20114AFP

Pin No.

Pin Name

Function

1

FMR

Frequency modulation setting resistor connecting terminal

2

FMC

Frequency modulation setting capacitor connecting terminal

3

VREF

Reference voltage output terminal

4

BO

Brownout input terminal

5

VAC

AC voltage input terminal

6

PD

Phase drop input terminal

7

AGND

Analog ground

8

E-DELAY

Delay of the Error signal setting terminal

9, 10

N.C.

Open

11

ERROR

Error output terminal

12

OFF

Shutdown terminal (VCC Reset)

13

RS

Current correction setting resistor connecting terminal

14

SS

Soft start setting capacitor connecting terminal

15

COMP

Error amplifier output terminal (to be phase-compensated)

16

N.C.

Open

17

FB

Error amplifier input terminal (feedback voltage input terminal)

18

QVP2

OVP2 input terminal

19-21

N.C.

Open

22

IRAMP

Ramp waveform setting resistor connecting terminal

23

CSO2

Current sense amplifier 2 output terminal (to be phase-compensated)

24

CSO1

Current sense amplifier 1 output terminal (to be phase-compensated)

25

CS2

Current sense 2 input terminal

26

CS1

Current sense 1 input terminal

27

N.C.

Open

28

VCC

Supply voltage terminal

29-31

N.C.

Open

32

GD2

Converter 2 Power MOSFET drive terminal

33

PGND

Power ground

34

GD1

Converter 1 Power MOSFET drive terminal

35

N.C.

Open

36

SYNC-O

Synchronization signal output terminal

37

RT/SYNC

Frequency setting resistor connecting terminal / Sync. Signal input terminal

38

CT

Frequency setting capacitor connecting terminal

39, 40

N.C.

Open