slvsa85d带有脉宽调制(PWM) 接口和自动相移的用于笔记本电脑的白光发光二级管 (Rev. D).pdf

TPS61187 SLVSA85D – JUNE 2010– REVISED FEBRUARY 2012 WLED Driver for Notebooks with PWM Interface and Auto Phase Shift Check for Samples: TPS61187 1 FEATURES DESCRIPTION • 4.5 V to 24 V Input Voltage The TPS61187 IC provides a highly integrated WLED driver solution for notebook LCD backlight. This • 38 V Maximum Output Voltage device has a built-in high efficiency boost regulator • Integrated 2 A 40 V MOSFET with integrated 2.0A /40V power MOSFET. The six • 300 kHz to 1 MHz Programmable Switching current sink regulators provide high precision current Frequency regulation and matching. In total, the device can support up to 60 WLEDs. In addition, the boost output • Adaptive Boost Output to WLED Voltages automatically adjusts its voltage to the WLED forward • Wide PWM Dimming Frequency Range voltage to optimize efficiency. – 100