R1280D002X Просмотр технического описания (PDF) - RICOH Co.,Ltd.

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производитель

R1280D002X

2CH PWM DC/DC Controller

RICOH Co.,Ltd. 

s SELECTION GUIDE

The mask option for the ICs can be selected at the user's request. The selection can be made with designating the

part number as shown below;

R1280D002X-TR

←Part Number

↑↑

ab

Code

a

b

Contents

Designation of Mask Option :

A version: fosc=700kHz, with External Phase Compensation for Channel 1.

B version: fosc=700kHz, with Internal Phase Compensation and standby mode.

C version: fosc=200kHz, with External Phase Compensation for Channel 1

Designation of Taping Type :

(Refer to Taping Specifications.)

s PIN CONFIGURATION

q SON10

10

6

(mark side)

1

5

s PIN DESCRIPTION

q R1280D002A/C

Pin No.

Symbol

1

EXT1

2

GND

3

AMPOUT1

4

DTC1

5

VFB1

6

VFB2

7

DTC2

8

Vrefout

9

VIN

10

EXT2

Description

External Transistor of Channel 1 Drive Pin (CMOS Output)

Ground Pin

Amplifier Output Pin of Channel 1

Maximum Duty Cycle of Channel 1 Setting Pin

Feedback pin of Channel 1

Feedback pin of Channel 2

Maximum Duty Cycle of Channel 2 Setting Pin

Reference Output Pin

Voltage Supply Pin of the IC

External Transistor of Channel 2 Drive Pin (CMOS Output)

Rev. 1.10

-3-

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