CAT4101数据手册集成电路（IC）的LED驱动器规格书PDF

描述 Description

The CAT4101 is a constant-current sink driving a string of high-brightness LEDs up to 1 A with very low dropout of 0.5 V at full load. It requires no inductor, provides a low noise operation and minimizes the number of components. The LED current is set by an external resistor connected to the RSET pin. The LED pin is compatible with high voltage up to 25 V, allowing the driving of long strings of LEDs. The device ensures an accurate and regulated current in the LEDs independent of supply and LED forward voltage variation. The PWM/EN input allows the device shutdown and the LED brightness adjustment by using an external pulse width modulation (PWM) signal. The driver features a thermal shutdown protection that becomes active whenever the die temperature exceeds 150C. The device is available in a high-power, 5-lead TO-263 package offering excellent thermal dissipation characteristics.

特性 Features

Accurate 1 A Current Sink
Up to 25 V Operation on LED Pin
Low Dropout 500 mV at 1 A
LED Current Set by External Resistor
High Resolution PWM Dimming via EN/PWM
'Zero' current Shutdown mode
Thermal Shutdown Protection
TO263 (D2PAK) 5-lead Package
This Device is Pb-Free, Halogen Free/BFR Free and is RoHS Compliant

应用 Application

High Power LED up to 1A
Architectural and General LightingAutomotive Lighting

简介

CAT4101属于集成电路（IC）的LED驱动器。由制造生产的CAT4101LED 驱动器器件属于 LED 驱动器电源管理集成电路 (PMIC) 系列，可通过标称固定电压的电源为负载（通常为发光二极管）提供电流，并且电流可控。它与用于电压调节的类似产品的主要区别在于，这类器件提供较低的反馈电压（以提高系统能效），而且通常可对器件工作点进行外部控制，可在照明应用中用于实现调光功能。