LT3003 - LT3003是3-Channel LED Ballaster with PWM

LT3003是LINEAR凌力尔特公司的一款LED 驱动器支持功能产品，LT3003是LT3003是3-Channel LED Ballaster with PWM，本站介绍了LT3003的封装应用图解、特点和优点、功能等，并给出了与LT3003相关的LINEAR元器件型号供参考。

LT3003 - LT3003是3-Channel LED Ballaster with PWM - LED 驱动器支持功能 - 电源管理 - 凌力尔特

LT3003 - 3-Channel LED Ballaster with PWM

LT3003 - 3-Channel LED Ballaster with PWM - Linear Technology（凌力尔特）

功能描述

The LT3003 drives three separate strings of LEDs up to 350mA/channel with 3% accurate current matching, resulting in uniform LED brightness and intensity. This approach is superior to conventional methods of running three separate channels with external ballast resistors requiring expensive factory calibration.

The LT3003 operates in boost mode, “buck mode” and “buck-boost mode”. A True Color PWM Dimming ratio of up to 3000:1 is achievable using a logic-level signal at the PWM pin for all modes without the need for external level-shifting circuitry. For applications with input supply above and below the output voltage of the LED strings, the LT3003 allows the LEDs to be returned to the input supply (“buck-boost mode”) instead of being limited to only SEPIC solutions.

The LT3003 is ideal for high power LED driver applications such as TFT LCD backlighting and heads-up displays. Additional overtemperature outputs allow appropriate system management for increased reliability.

The LT3003 is available in a small 10-pin MSE package.

特点

3% LED Current Matching

Up to 350mA Continuous Current per LED String

Up to 3000:1 True Color PWMTM Dimming Range

PWM Input Disconnects LED Strings

Can Operate in Buck, Boost and Buck-Boost Modes

Wide Input Range: 3V to 40V

Overtemperature Outputs

Works with LT1618, LT3477, LT3474, LT3475, LT3476, LTC3783

Thermally Enhanced 10-Pin MSOP Package

应用