SSL1523A

SSL1523A SMPS ICs for mains LED drivers Rev. 1 — 25 April 2012 Product data sheet 1. General description The SSL1523A is a Switched Mode Power Supply (SMPS) controller IC that operate 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 concept for solid state lighting applications possible. The SSL1523A can operate in applications with a power range of up to 15 W. In the most basic applications, the SSL1523A act 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 SSL1523A renders an efficient and low cost power supply system for mains LED drivers. 2. Features and benefits  Designed for mains LED drivers up to 15 W  Integrated power switch: 6.5 Ω; 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  Low standby power (< 100 mW) with frequency reduction at ...