The CAV4201 is a high efficiency step-down converter optimized to drive high current LEDs. A patented switching control algorithm allows highly efficient and accurate LED current regulation. A single RSET resistor sets the full scale LED string current up to 350 mA from supplies as high as 36 V. The switching architecture of the CAV4201 results in extremely low internal power dissipation allowing the device to be housed in a tiny package without the need for dedicated heat sinking. The device is compatible with switching frequencies of up to 1 MHz, making it ideal for applications requiring small footprint and low value external inductors. Analog dimming and LED shutdown control is provided via a single input pin, CTRL. Additional features include overload current protection and thermal shutdown.
Features
Benefits
Power Efficiency up to 94%
Smaller, more efficient alternative to linear regulators for driving high-brightness LEDs in step-down applications.
LED Drive Current up to 350 mA
Compatible with 12 V and 24 V Standard Systems
Handles Transients up to 40 V
Single Pin Control and Dimming Function
Drives LED Strings of up to 32 V
Open and Short LED Protection
Parallel Configuration for Higher Output Current
CAV Prefix for Automotive and Other Applications requiring Site and Change Control
