LED6001数据手册集成电路（IC）的LED驱动器规格书PDF

描述 Description

The LED6001 device is a LED driver that combines a boost controller and a high-side current sensing circuitry optimized for driving one string of high-brightness LEDs. The device is compatible with multiple topologies such as boost, SEPIC and floating load buck-boost. The brightness of the LEDs can be controlled through PWM dimming and analog dimming (10:1 ratio) by means of two independent pins. Enhanced PWM dimming can be obtained thanks to a MOSFET in series with the LED string and directly driven by a dedicated pin.

The high-side current sensing, in combination with a P-channel MOSFET, provides an effective protection in case the positive terminal of the LED string is shorted to ground. The high precision current sensing circuitry allows a LED current regulation reference within ± 4% accuracy over the whole temperature range and production spread.

A fault output (open-drain) informs the host system about faulty conditions: device overtemperature, output overvoltage (disconnected LED string) and LED overcurrent.

特性 Features

• Switching controller section
•5.5 V to 36 V input voltage range
•Very low shutdown current: ISHDN< 10 μA
•Internal +5 V LDO for gate driver supply
•Internal +3.3 V LDO for device supply
•Fixed frequency peak current mode control
•Adjustable (100 kHz to 1 MHz) switching frequency
•External synchronization for multi-device applications
•High performance external MOSFET driver
•Cycle-by-cycle external MOSFET OCP
•Fixed internal soft-start
•Programmable output OVP
•Boost, buck-boost and SEPIC topologies supported
•Thermal shutdown with autorestart
•Output short-circuit detection
• LED control section
•Up to 60 V output voltage
•Constant current control loop
•High-side output current sensing circuitry
•30 to 300 mV differential sensing voltage
•± 4% output current reference accuracy
•Output overcurrent protection
•Sensing resistor failure protection
•PWM dimming with auxiliary series switch
•Analog dimming

简介

LED6001属于集成电路（IC）的LED驱动器。由制造生产的LED6001LED 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。