描述 Description

The SC653 is a highly integrated light management unit that provides two low-noise LDOs, a multi-mode high efficiency charge pump, and four programmable LED drivers. Performance is optimized for use in single-cell Liion battery applications.

特性 Features

·Input supply voltage range — 2.9V to 5.5V
·Four programmable current sinks with 29 steps from0mA to 25mA
·Very high effi ciency charge pump driver system withthree modes — 1x, 1.5x and 2x
·One programmable 100mA low-noise LDO regulator
·One programmable 150mA low-noise LDO regulator
·Charge pump frequency — 250kHz
·SemPulse single wire interface
·Backlight current accuracy — ±1.5% typical
·Backlight current matching — ±0.5% typical
·Fade-in/fade-out feature for main backlight
·Automatic sleep mode (LEDs off ) — IQ = 100μA
·Shutdown current — 0.1μA (typical)
·Ultra-thin package — 2.3 x 2.3 x 0.6 (mm)
·Fully WEEE and RoHS compliant

應(yīng)用 Application

·Cellular phones, smart phones, and PDAs
·LCD modules
·Portable media players
·Digital cameras and GPS units
·Display backlighting and LED indicators

簡介

SC653屬于集成電路（IC）的LED驅(qū)動器。由制造生產(chǎn)的SC653LED 驅(qū)動器器件屬于 LED 驅(qū)動器電源管理集成電路 (PMIC) 系列，可通過標(biāo)稱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)的類似產(chǎn)品的主要區(qū)別在于，這類器件提供較低的反饋電壓（以提高系統(tǒng)能效），而且通常可對器件工作點(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。