Description

The CAT4016Y is a constant-current sink designed for driving high-brightness LEDs up to 1A with a very low dropout voltage of 0.5V at full load. It does not require an inductor, operates with low noise, and minimizes the number of components needed. The LED current is set by an external resistor connected to the RSET pin, and the LED pin is compatible with high voltage up to 25V, allowing it to drive long strings of LEDs. This device ensures accurate and regulated current in the LEDs, independent of supply and LED forward voltage variations.

Specifications and Features

• Accurate 1A Current Sink
• Up to 25V Operation on LED Pin
• Low Dropout 500mV at 1A
• LED Current Set by External Resistor
• High Resolution PWM Dimming via EN/PWM
• “Zero” Current Shutdown Mode
• Thermal Shutdown Protection
• TO-263 5-lead Package
• Pb-Free, Halogen Free/BFR Free, and RoHS Compliant

Application Scenarios

• High power LEDs up to 1A
• Architectural and general lighting
• Automotive lighting

Comparison

• Accurate and regulated current in the LEDs, independent of supply and LED forward voltage variations
• No inductor required, low noise operation, and minimal component requirements
• Incorporates thermal shutdown protection and a "zero" current shutdown mode
• High resolution PWM dimming via EN/PWM

• The device only has a TO-263 5-lead package option