1.

General description

The SSL1623PH is a Switched Mode Power Supply (SMPS) controller IC that operates

directly from the rectified universal AC mains. It is implemented in the high voltage Easy

High Voltage Silicon-On-Insulator (EZ-HV SOI) process, combined with a low voltage

Bipolar Complementary Metal Oxide Semiconductor (BiCMOS) process.

The device includes a high voltage power switch and a start-up circuit that operates

directly from the rectified mains voltage. A dedicated circuit for valley switching is built in,

which makes a very efficient slim-line electronic LED driver concept possible.

The SSL1623PH can operate in LED applications with a power range of up to 25 W.

Applications below 15 W are more suited to the SSL152x family of mains LED drivers.

In its most basic version of application the SSL1623PH acts as a voltage source. Here no

additional secondary electronics are required. A combined voltage and current source can

be realized with minimum costs for external components. Implementation of the

SSL1623PH renders an efficient and low cost LED power supply system.

2.

Features and benefits

Integrated power switch: 6.5

Ω and 650 V

Operates from universal AC mains supplies, 80 V to 276 V

Adjustable frequency for flexible design

RC oscillator for load insensitive regulation loop constant

Valley switching for minimum switch-on loss

Adjustable overcurrent protection

Undervoltage protection

Temperature protection

Short-circuit winding protection

Safe restart mode for system fault conditions

Simple application with both primary and secondary (opto) feedback

16-pin DIP package

SSL1623PH

SMPS IC for mains LED drivers

Rev. 02 — 13 September 2010

Product data sheet