Description

The FAN5622, FAN5624, and FAN5626 are two−, four−, and

six−channel current−sink linear LED drivers used to backlight the

main LCD displays or keypads in mobile electronics, such as cellular

phone handsets.

A very low dropout of 50 mV allows driving LEDs without any

inductors or switch capacitors. The brightness levels of the LED

outputs are programmed through single−wire digital control interface.

The user can program 32 linear dimming steps and turn on and off the

LEDs through this interface by applying digital pulses.

The FAN562x family of linear LED drivers provides high efficiency

due to the low drop−out voltage of the LED driver. Good matching

between different channels of LED output is provided across the entire

32 dimming steps. These LED drivers also integrate short circuit,

under−voltage, and thermal protection to ensure for a more robust

solution.

The FAN5622, FAN5624, and FAN5626 are available in very small

form−factor packages: 6−pin Super SOT23, 10−lead UMLP, and

10−lead MicroPak MLP, respectively.

Features

• Family of Three Linear Current−Sink LED Drivers that Support 2, 4,

or 6 LED Outputs

• Current Sink Driver for Each LED Output:

♦ 30 mA Maximum Output Current

♦ 50 mV Drop−out at 15 mA IOUT

♦ Better than 3 Matching between Channels

♦ External RSET

• Single−Wire Digital Control Interface for Easy Programming

♦ 32 Linear Steps of Dimming Control

• Less than 1 A Shutdown Current

• Short−Circuit, Under−Voltage, and Thermal Protection

• Wide Input Voltage Range: 2.7 to 5.5 V

• Small Form−Factor Packages:

• These are Pb−Free Devices

♦ FAN5622: 6−Pin Super SOT23

♦ FAN5624: 10−Lead 1.4x1.8x0.55 mm UMLP

♦ FAN5626: 10−Lead 1.6x2.1x0.55 mm MicroPak MLP

Applications

• Mobile Handsets

• Mobile Internet Devices

• PMP and MP3 Players

• LCD Modules

FAN5624属于集成电路（IC） > LED 驱动器。安森美半导体公司制造生产的FAN5624LED 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。