BCR431U数据手册集成电路（IC）的LED驱动器规格书PDF

描述 Description

Infineon’s BCR431U is a linear LED driver IC in a small SOT23-6 package regulating the LED current in standalone operation without any external power transistor. It is suitable for driving currents up to 37mA and the IC supply voltage ranges from 6V up to 42V. The LED current level can be adjusted by connecting a high-ohmic resistor Rset to pin RS. The voltage drop at the integrated LED driver stage is 200mV max. at 37mA improving the overall system efficiency and providing extra voltage headroom to compensate for tolerances of LED forward voltage and supply voltage. Despite temperature changes, the driving current is always under control. Thanks to a smart temperature controlling circuit which is reducing the LED current when the junction temperature of BCR431U is very high.

特性 Features

• Supply voltage from 6 to 42V\r
• Controls up to 37mA LED current\r
• Typ. 105mV saturation voltage at 15mA\r
• Smart temperature control\r
• LED current precision ±10% over the whole current range\r
• High ESD robustness\r
• LED current can be adjusted by Rset functionality\r
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Benefits\r
• Flexible for 12V / 24V / 36V designs\r
• Low voltage-drop enables voltage headroom\r
• for more LEDs and better efficiency\r
• for longer LED strips and less feeding points\r
• for more flexibility in power supplies used\r
• High precision for low-power LEDs\r
• Thermal protection in critical temperature ranges\r
• Protection against surge events

应用 Application

• LED strip\r
• Architectural LED lighting\r
• LED displays and channel letters\r
• Emergency lighting\r
• Retail lighting\r
• White good lighting

简介

BCR431U属于集成电路（IC）的LED驱动器。由制造生产的BCR431ULED 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。