R2A20114AFP/ASP

Preliminary

R03DS0051EJ0100 Rev.1.00

Page 4 of 16

Aug 29, 2011

Pin Arrangement of R2A20114ASP

(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 R2A20114ASP

Pin No.

Pin Name

Function

1

RT/SYNC

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

2

CT

Frequency setting timing capacitor connecting terminal

3

FM

Frequency modulation setting timing capacitor connecting terminal

4

VREF

Reference voltage output terminal

5

BO

Brownout input terminal

6

VAC

AC voltage input terminal

7

AGND

Analog ground

8

RS

Current correction setting resistor connecting terminal

9

SS

Soft start setting capacitor connecting terminal

10

COMP

Error amplifier output terminal (to be phase-compensated)

11

FB

Error amplifier input terminal (feedback voltage input terminal)

12

IRAMP

Ramp waveform setting resistor connecting terminal

13

CSO2

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

14

CSO1

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

15

CS2

Current sense 2 input terminal

16

CS1

Current sense 1 input terminal

17

VCC

Supply voltage terminal

18

GD2

Converter 2 Power MOSFET drive terminal

19

PGND

Power ground

20

GD1

Converter 1 Power MOSFET drive terminal