AT1741

Preliminary Product Information

2-Channel PWM Controller for CCFL Backlight

2F, No.10, Prosperity RD. II, Science-Based Industrial Park, Hsinchu 300,Taiwan, R.O.C.

Tel: 886-3-563-0878

Fax: 886-3-563-0879

2

Pin Configuration

Ordering Information

Part number

Package

Marking

AT1741S

SOP16

AT1741S

AT1741S_GRE

SOP16,Green

AT1741S, date code with one bottom line

AT1741D

DIP16

AT1741D

Pin Description

Pin No.

Symbol

I/O

Description

1

CT

--

External timing capacitor

2

RT

--

External timing resistor

3

NON1

I

Positive input for error amplifier 1

4

INV1

I

Negative input for error amplifier 1

5

FB1

O

Error amplifier 1 output

6

DT1

I

Output 1 dead time / soft start setting

7

OUT1

O

Output 1

8

GND

--

Ground

9

Vcc

--

Power supply

10

OUT2

O

Output 2

11

DT2

I

Output 2 dead time / soft start setting

12

FB2

O

Error amplifier 2 output

13

INV2

I

Negative input for error amplifier 2

14

NON2

I

Positive input for error amplifier 2

15

SCP

--

Time latch setting

16

REF

O

Reference voltage output（2.5V）