R2A20104/114 Series

R03DS0008EJ0200 Rev.2.00

Page 3 of 11

Apr 18, 2014

Pin Arrangement of R2A20104FP and R2A20114FP

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 R2A20104FP and R2A20114FP

Pin No.

Pin Name

Input/Output

Function

1

FMR

Input

Frequency modulation setting resistor connecting terminal

2

FMC

Input

Frequency modulation setting capacitor connecting terminal

3

VREF

Output

Reference voltage output terminal

4

BO

Input

Brownout input terminal

5

VAC

Input

AC voltage input terminal

6

PD

Input

Phase drop input terminal

7

AGND

—

Analog ground

8

E-DELAY

Input

Delay of the Error signal setting terminal

9, 10

N.C.

—

Open

11

ERROR

Output

Error output terminal

12

OFF

Input

Shutdown terminal (VCC Reset)

13

RS

Input

Current correction setting resistor connecting terminal

14

SS

Input

Soft start setting capacitor connecting terminal

15

COMP

Output

Error amplifier output terminal (to be phase-compensated)

16

N.C.

—

Open

17

FB

Input

Error amplifier input terminal (feedback voltage input terminal)

18

QVP2

Input

OVP2 input terminal

19-21

N.C.

—

Open

22

IRAMP

Input

Ramp waveform setting resistor connecting terminal

23

CSO2

Output

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

24

CSO1

Output

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

25

CS2

Input

Current sense 2 input terminal

26

CS1

Input

Current sense 1 input terminal

27

N.C.

—

Open

28

VCC

Input

Supply voltage terminal

29-31

N.C.

—

Open

32

GD2

Output

Converter 2 Power MOSFET drive terminal

33

PGND

—

Power ground

34

GD1

Output

Converter 1 Power MOSFET drive terminal

35

N.C.

—

Open

36

SYNC-O

Output

Synchronization signal output terminal

37

RT/SYNC

Input

Frequency setting resistor connecting terminal / Sync. Signal input terminal

38

CT

Input

Frequency setting capacitor connecting terminal

39, 40

N.C.

—

Open