TLE4241中文资料LED Driver with Adjustable Current数据手册Infineon规格书

描述 Description

Functional Description
The TLE 4241 GM is an integrated adjustable constant current source. It provides an output current adjustable via different means (SET, PWM, reference resistor) which is kept nearly independent from load and supply voltage changes. The IC is designed to supply LEDs under the severe conditions of automotive applications resulting in constant brightness and extended LED lifetime. It is provided in the very small PG-DSO-8-16 (Micro 8) package. Protection circuits prevent damage to the device in case of overload, short circuit, reverse polarity and overtemperature. The connected LEDs are protected against reverse polarity as well as excess voltages up to 45 V. A status output allows handling of open load and short circuit at the main output.
A PWM input offers the possibility to adjust the LED brightness by pulse width modulation.
With an implemented high/low current switch the output current level can be reduced e.g. for brake/tail light application.
The implemented features such as adjustable output current, the high/low current switch and the provided PWM input make the device well suited for a broad range of LED and other applications.

特性 Features

• Adjustable constant output current
• Wide input voltage range
• Low drop voltage
• Open load detection
• Overtemperature protection
• Short circuit proof
• Reverse polarity proof
• Wide temperature range: -40 °C < Tj < 150 °C
• Very small SMD-Package
• Green Product (RoHS compliant)
• AEC Qualified 

简介

TLE4241属于集成电路（IC）的LED驱动器。由制造生产的TLE4241LED 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。