描述 Description

The SC627 is a high efficiency charge pump LED driver using Semtech’s proprietary mAhXLife? technology. Performance is optimized for use in single-cell Li-ion battery applications.

特性 Features

·Input supply voltage range — 3.0V to 5.5V
·Charge pump modes — 1x, 1.5x and 2x
·Four programmable current sinks with 32 steps from 0.5mA to 25mA
·Flash LED — 700mA max in flash mode, 250mA max continuous for spotlight
·Two user-configurable 100mA low-noise LDO regulators
·Charge pump frequency — 250kHz
·SemWire? single wire interface — up to 75kbit/s
·Backlight current accuracy ±1.5% typical
·Backlight current matching ±0.5% typical
·Programmable fade-in/fade-out for main backlight
·External flash control pin to sync with camera
·Optional 1s flash time out
·Automatic sleep mode (LEDs off ) — IQ = 100μA
·Low shutdown current — 0.1μA (typical)
·Ultra-thin package — 3mm x 3mm x 0.6mm
·Fully WEEE and RoHS compliant

應(yīng)用 Application

·Cellular phone backlighting and flash
·PDA backlighting and flash
·Camera I/O and core power

簡(jiǎn)介

SC627屬于集成電路（IC）的LED驅(qū)動(dòng)器。由制造生產(chǎn)的SC627LED 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?？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。