SSL1623PH

General description

The SSL1623PH is a Switched Mode Power Supply (SMPS) controller IC that operates directly from the rectified universal mains. It is implemented in the high voltage EZ-HV SOI (Easy High Voltage Silicon-On-Insulator) process, combined with a low voltage BiCMOS (Bipolar Complementary Metal Oxide Semiconductor) process.

The device includes a high voltage power switch and a circuit for start-up 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. The SSL152x family would be a better choice if power below 15 W is required.

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.

Features

• Integrated power switch: 6.5 Ohm 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
• Available in 16-pin DIP package

Products/packages

Pricing/ordering/availability

Applications

• LED ballasts
• Contour lighting
• LED spotlights
• Channel letter lighting
• Down lighting
• Commercial lighting (e.g. retail displays)

Block diagrams/pinning

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