Product Specification

Low-Power Green-Mode PWM Flyback Power Controller without Secondary Feedback

SGP400

© System General Corp.

- 2 -

www.sg.com.tw • www.fairchildsemi.com

Version 1.0.1 (IAO33.0084.B0)

September 24, 2007

MARKING INFORMATION

PIN CONFIGURATION

ORDERING INFORMATION

Part Number

PWM Frequency

Pb-Free

Package

SGP400TZ

65KHz

6-Pin SOT-26

SGP400DZ

65KHz

8-Pin DIP-8

PIN DESCRIPTIONS

Pin No.

Name

DIP-8 SOT-26

Type

Function

GATE

1

6

Driver Output The totem-pole output driver to drive the power MOSFET.

VDD

2

5

Supply

Power supply.

NC

3

NA

NC pin.

SENSE

4

4

Analog Input

Current sense. It senses the voltage across a sensed resistor. To provide over-current

protection, PWM output is disabled if the voltage exceeds an internal threshold. This pin

also provides current information for current-mode control.

NC

5

3

NC pin.

NC

6

NA

NC pin.

FB

7

2

Analog Input

Feedback. The FB pin provides feedback information to the internal PWM comparator.

This feedback is used to control the duty cycle. When no feedback is provided, this pin is

left open.

GND

8

1

Supply

Ground.

: Lead Free

A~Z=W27~W52

SOT-26

GND

FB

N.C.

GATE

VDD

SENSE

Null=Regular package

SGP400DP

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N.C.

SENSE

N.C.

GND

FB

N.C.

GATE

VDD

DIP-8

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