R2A20104/114 Series

R03DS0008EJ0301 Rev.3.01

Page 4 of 11

Jan 08, 2016

Pin Arrangement of R2A20104SP and R2A20114SP

(Top view)

1

2

3

4

5

6

7

8

9

10

20

19

18

17

16

15

14

13

12

11

CS2

CS1

GD1

SS

VCC

GD2

CSO2

CT

PGND

FB

COMP

CSO1

AGND

RS

VREF

RT/SYNC

IRAMP

VAC

FM

BO

Pin Functions of R2A20104SP and R2A20114SP

Pin No.

Pin Name

Input/Output

Function

1

RT/SYNC

Input

Frequency setting timing resistor connecting terminal / Sync. signal input terminal

2

CT

Input

Frequency setting timing capacitor connecting terminal

3

FM

Input

Frequency modulation setting timing capacitor connecting terminal

4

VREF

Output

Reference voltage output terminal

5

BO

Input

Brownout input terminal

6

VAC

Input

AC voltage input terminal

7

AGND

—

Analog ground

8

RS

Input

Current correction setting resistor connecting terminal

9

SS

Input

Soft start setting capacitor connecting terminal

10

COMP

Output

Error amplifier output terminal (to be phase-compensated)

11

FB

Input

Error amplifier input terminal (feedback voltage input terminal)

12

IRAMP

Input

Ramp waveform setting resistor connecting terminal

13

CSO2

Output

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

14

CSO1

Output

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

15

CS2

Input

Current sense 2 input terminal

16

CS1

Input

Current sense 1 input terminal

17

VCC

Input

Supply voltage terminal

18

GD2

Output

Converter 2 Power MOSFET drive terminal

19

PGND

—

Power ground

20

GD1

Output

Converter 1 Power MOSFET drive terminal