MCP1643集成電路（IC）的LED驅(qū)動器規(guī)格書PDF中文資料

MCP1643屬于集成電路（IC）的LED驅(qū)動器。由微芯科技股份有限公司制造生產(chǎn)的MCP1643LED 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ζ骷ぷ鼽c進行外部控制，可在照明應(yīng)用中用于實現(xiàn)調(diào)光功能。

Features

? Passes Automotive AEC-Q100 Reliability Testing

? 1.6A Typical Peak Input Current Limit

? Up to 550 mA LED Load Current

? Low Start-up Voltage: 0.65V (typical, 25 mA LED

Current)

? Low Operating Input Voltage: down to 0.5V

? Maximum Input Voltage < VLED < 5.0V

? Maximum Output Voltage:

- 5.0V

- Overvoltage Protection

? Low Reference Voltage:

- VFB = 120mV

- Minimal Power Loss on Sense Resistor

? Pulse-Width Modulation Mode Operation (1 MHz)

? Internal Synchronous Rectifier

? Internal Compensation

? Inrush Current Limiting

? Internal Soft-Start (240 μs typical)

? Shutdown (EN = GND):

- True Load Disconnect

- Dimming Control by Variable Duty Cycle

? Shutdown Current: 1.2 μA (typical)

? Overtemperature Protection

? Packages:

- MSOP-8

- 2 mm x 3 mm DFN-8

Applications

? One and Two Cell Alkaline and NiMH/NiCd

Portable LED Lighting Products

? LED Flashlight and Head Lamps

? Rechargeable Flashlights

? Wall LED Lamps with Motion Detectors

? LED supply for backlights

? General LED constant current applications