PM6600集成電路（IC）的LED驅(qū)動(dòng)器規(guī)格書(shū)PDF中文資料

PM6600屬于集成電路（IC）的LED驅(qū)動(dòng)器。由意法半導(dǎo)體集團(tuán)制造生產(chǎn)的PM6600LED 驅(qū)動(dòng)器器件屬于 LED 驅(qū)動(dòng)器電源管理集成電路 (PMIC) 系列，可通過(guò)標(biāo)稱(chēng)固定電壓的電源為負(fù)載（通常為發(fā)光二極管）提供電流，并且電流可控。它與用于電壓調(diào)節(jié)的類(lèi)似產(chǎn)品的主要區(qū)別在于，這類(lèi)器件提供較低的反饋電壓（以提高系統(tǒng)能效），而且通?？蓪?duì)器件工作點(diǎn)進(jìn)行外部控制，可在照明應(yīng)用中用于實(shí)現(xiàn)調(diào)光功能。

Description

The PM6600 consists of a high efficiency monolithic boost converter and six controlled current generators (ROWs), specifically designed to supply LEDs arrays used in the backlight of LCD panels. The device can manage a nominal output voltage up to 36 V (i.e. 10 White-LEDs per ROW).

Features

■ Boost section

– 4.7 V to 28 V input voltage range

– Internal power MOSFET

– Internal +5 V LDO for device supply

– Up to 36 V output voltage

– Constant frequency peak current-mode control

– 200 kHz to 1 MHz adjustable switching frequency

– External synchronization for multi-device application

– Pulse-skip power saving mode at light load

– Programmable soft-start

– Programmable OVP protection

– Stable with ceramic output capacitors

– Thermal shutdown

■ Backlight driver section

– Six rows with 32 mA maximum current capability (adjustable)

– Up to 10 WLEDs per row

– Unused rows detection

– 500 ns minimum dimming time (1 minimum dimming duty-cycle at 20 kHz)

– ±2.1 current accuracy

– ±2 current matching between rows

– LED failure (open and short circuit) detection

Applications

■ Notebook monitors backlight

■ UMPC backlight