Datasheet > FAN5608_06

FAN5608_06

更新时间： 2024-09-26 04:18:11

品牌	Logo	应用领域
飞兆/仙童 - FAIRCHILD		转换器驱动
页数	文件大小	规格书
13页	366K
描述
Serial / Parallel LED Driver with Current-Regulated, Step-Up DC/DC Converter

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中文翻译

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数据手册

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FAN5608_06 数据手册

August 2006

FAN5608 Serial / Parallel LED Driver with

Current-Regulated, Step-Up DC/DC Converter

Features

Description

Two independent channels drive up to six LEDs

per channel

The FAN5608 is an integrated Schottky diode LED

driver, which generates regulated output currents from a

battery input voltage of 2.7V to 5V. An internal MOS

switch and the external inductor deliver the necessary

voltage to the load. The proprietary internal

compensation loop continuously monitors the lowest

LED cathode voltage of both channels and adjusts the

V_OUTvoltage to the minimum value. The minimum V_OUT

is determined by the highest LED forward voltage of the

selected channel. This adaptive nature allows the

FAN5608 architecture to deliver high efficiency. Up to

twelve LEDs can be connected in series as long as the

summed forward voltage does not exceed the maximum

specification of 24V. It is not required to match an equal

number of LEDs serially within each channel; FAN5608

delivers the highest efficiency and best current

regulation in the balanced configuration.

Adaptive output voltage drive to maximize efficiency

PFM mode of operation of the boost circuit

Up to 85% efficiency

Up to 2×20mA output

Two built-in DACs for independent (digital) brightness

control for both channels

LED current can be duty-cycle-modulated, 0 to 20mA

Digital, analog, and PWM brightness control

2.7V to 5.5V input voltage range

500KHz operating frequency

Soft-start feature

Low shutdown current: I_CC< 1μA

Open-load protection

Minimal external components needed

Space-saving 4x4mm 12-lead MLP packages

FAN5608 has two internal two-bit D/A converters that

provide independent programmability to each output

channel. In analog programming, "B" pins must be GND

(logic “0”); a resistor must be connected between pin “A”

and a fixed supply voltage. The output current can be

programmed to any desired value within the specified

range. The FAN5608DHMPX is available in a 4x4mm

12-lead MLP package. A single external resistor sets the

current and turns the device ON and OFF.

Applications

Cell phones

Handheld computers

PDAs, DSCs, MP3 players

Keyboard backlights

LED displays

Ordering Information

Part Number

Pb-Free

Schottky Diode

Package

Packing Method

FAN5608DHMPX

Yes

Internal

MLP-12 4x4mm

Tape and Reel

FAN5608 Rev. 1.0.5 • 8/8/06

www.fairchildsemi.com

12 3 4 5 6 7...13

中文翻译

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与FAN5608_06相关器件

型号	品牌	获取价格	描述	数据表
FAN5608DHMPX	FAIRCHILD	获取价格	Serial/Parallel LED Driver with Current-Regulated, Step-Up DC/DC Converter
FAN5608DHMPX	ONSEMI	获取价格	LED Driver
FAN5608DMPX	FAIRCHILD	获取价格	Serial/Parallel LED Driver with Current-Regulated, Step-Up DC/DC Converter
FAN5608HMPX	FAIRCHILD	获取价格	Serial/Parallel LED Driver with Current-Regulated, Step-Up DC/DC Converter
FAN5608HMPX_NL	FAIRCHILD	获取价格	LED Driver, 2-Segment, 4 X 4 MM, LEAD FREE, MO-220WGGB, MLP-12
FAN5608MPX	FAIRCHILD	获取价格	Serial/Parallel LED Driver with Current-Regulated, Step-Up DC/DC Converter
FAN5609	FAIRCHILD	获取价格	LED Driver with Adaptive Charge Pump DC/DC Converter
FAN5609MPX	FAIRCHILD	获取价格	LED Driver with Adaptive Charge Pump DC/DC Converter
FAN5609MPX_NL	FAIRCHILD	获取价格	LED Driver, 4-Segment, 4 X 4 MM, LEAD FREE, MO-220VGGC-3, MLP-16
FAN5609MTCX	FAIRCHILD	获取价格	LED Driver with Adaptive Charge Pump DC/DC Converter

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