TLD5085EJ数据手册集成电路（IC）的LED驱动器规格书PDF

描述 Description

The TLD5085EJ is a smart LED buck converter with an integrated power-switch, capable of driving up to 1.8A load current with excellent line and load regulation. The main function of this device is to step-down the input voltage and regulating a constant LED current. The constant current regulation is especially beneficial for LED color accuracy and longer lifetime. The TLD5085EJ also has a PWM input which can be used for LED dimming. The switching frequency of 370kHz allows to use small and inexpensive passive components. An Enable function is implemented to reduce the shut-down current consumption to typ. 0.1μA. This IC is suited for use in the harsh automotive environments and provides protection functions such as current limitation and overtemperature shutdown. The integrated soft-start feature avoids a current and voltage over shot at the output during start-up of the device.

特性 Features

·Wide Input Voltage Range from 4.75V to 45V
·Constant Current or Constant Voltage Regulation
·Drives LEDs in Buck Topology
·Very low shutdown current consumption (typ. 0.1μA)
·370 kHz switching frequency
·PWM Dimming
·Integrated power-switch (output current up to 1.8A)
·Internal Soft-Start function
·± 2% output current tolerance (± 4% for full load current range)
·Small thermally enhanced exposed heatslug package
·Over Temperature Shutdown
·AEC Qualified
·Green Product (RoHS Compliant)

应用 Application

·Automotive Lighting (Reading Light, Dome Light, Dashboard Backlighting)
·High Power LED Applications
·Constant Current and Voltage Source

简介

TLD5085EJ属于集成电路（IC）的LED驱动器。由制造生产的TLD5085EJLED 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。