NCP5005中文资料LED 驱动器，升压，紧凑型，背景灯数据手册ONSEMI规格书

描述 Description

The NCP5005 is high efficiency boost converter operating in current loop, based on a PFM mode, to drive White LED. The current mode regulation allows a uniform brightness of the LEDs. The chip has been optimized for small ceramic capacitors, capable to supply up to 1.0 W output power.

特性 Features

• 2.7 to 5.5 V Input Voltage Range
• Vout to 24 V Output Compliance allows up to 5 LEDs drive in Series
• Buil-in Overvoltage protection
• Full EMI Immunity
• Inductor Based Converter brings up to 90% Efficiency
• Constant Output Current regulation
• 0.3 µA Stand By Quiescent Current
• Includes Dimming Function (PWM)
• Enable Function Driven Directly from Low Battery Voltage Source
• Automatic LEDs Current Matching
• Thermal Shutdown Protection
• All Pins are Fully ESD Protected
• Low EMI Radiation

应用 Application

• LED Display Back Light Control
• Keyboard Back Light
• High Efficiency Step up Converter

简介

NCP5005属于集成电路（IC）的LED驱动器。由制造生产的NCP5005LED 驱动器器件属于 LED 驱动器电源管理集成电路 (PMIC) 系列，可通过标称固定电压的电源为负载（通常为发光二极管）提供电流，并且电流可控。它与用于电压调节的类似产品的主要区别在于，这类器件提供较低的反馈电压（以提高系统能效），而且通常可对器件工作点进行外部控制，可在照明应用中用于实现调光功能。