· Dimming LED driver controller Hysteretic Current Regulation Closed-loop LED current dimming control Analog/PWM Dimming Input Internal High Voltage Regulator Internal 15.6V zener clamp diode on Vcc Micropower startup (250A) Latch immunity and ESD protection
Single chip dimming solution Simple LED current dimming control method No external protection circuits required (fully internal) Easy to use for fast design cycle time Increased manufacturability and reliability
Description Block Diagram Qualification Information Absolute Maximum Ratings Recommended Operating Conditions Electrical Characteristics Input/Output Pin Equivalent Circuit Diagram Lead Definitions Lead Assignments PCB Layout Guidelines Package Details Tape and Reel Details Part Marking Information Ordering Information
The IRS2980 utilizes International Rectifier's control and high-voltage technologies to realize a simple, highperformance dimming LED driver solution. This solution is based on a hysteretic topology where the high frequency AC output current is controlled by adjusting the oscillator frequency and duty cycle.