Off-Line Quasi-Resonant Switching Regulators

STR-X6769

3

Terminal List Table

Number

Name

Description

Functions

1

D

Drain

MOSFET drain

2

S

Source

MOSFET source

3

GND

Ground terminal

Ground

4

VCC

Power supply terminal

Input of power supply for control circuit

5

SS/OLP

Soft Start/Overload Protection terminal

Input to set delay for Overload Protection and Soft Start operation

6

FB

Feedback terminal

Input for Constant Voltage Control and Burst (intermittent) Mode

oscillation control signals

7

OCP/BD

Overcurrent Protection/Bottom Detection

Input for Overcurrent Detection and Bottom Detection signals

Functional

Block Diagram

Allegro MicroSystems, Inc.

115 Northeast Cutoff

Worcester, Massachusetts 01615-0036 U.S.A.

1.508.853.5000; www.allegromicro.com