FAN5606

更新时间： 2024-09-25 22:50:59

品牌	Logo	应用领域
飞兆/仙童 - FAIRCHILD		驱动器转换器
页数	文件大小	规格书
9页	114K
描述
Serial LED Driver with Current-Regulated, Step-Up DC/DC Converter

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中文翻译

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FAN5606 数据手册

www.fairchildsemi.com

FAN5606

Serial LED Driver with Current-Regulated, Step-Up

DC/DC Converter

Features

Description

• Drives Up to Six LEDs in Series

• Pulse Skip PWM Mode of Operation of the Boost Circuit

• Up to 90% Peak Efﬁciency

• No External Schottky Diode Required

• Up to 25mA Output

• Built-in DAC for Digital Brightness Control

• LED’s Current Can be Duty-Cycle-Modulated

• Digital, Analog, and PWM Brightness Control

• 2.7V to 5.5V Input Voltage Range

• 0.5MHz Operating Frequency (8MHz internal clock)

• Soft Start

The FAN5606 LED driver generates regulated output cur-

rents from a battery with input voltage varying between 2.7V

to 5V. An internal NMOS switch drives an external inductor,

and a Schottky diode delivers the inductor’s stored energy to

the load. Soft start circuitry prevents excessive current drawn

from the supply during power on. Any number of LEDs can

be connected in series as long as the summed forward volt-

ages do not lead to exceeding the speciﬁed operating output

voltage range.

In the FAN5606 device, the internal two-bit D/A converters

provide programmability of the output channel current.

Analog programming of the output current is also possible

in the FAN5606. To do this, ground the “B” pin and connect

a resistor between the “A” pin and a ﬁxed supply voltage.

The output current can then be programmed to any desired

value within its speciﬁed range. The analog version uses a

single external resistor to set the current, and to turn the

device ON and OFF. The device is available in an 8-lead

MLP package.

• Low Shutdown Current: I_CC< 1µA

• LED Short Circuit Protection

• Minimal External Components Needed

• Available in an 8-lead MLP Package

Applications

• Cell Phones

• Handheld Computers

• PDAs, DSCs, MP3 Players

• Keyboard Backlights

• LED Display

Typical Applications

Digital Brightness Control

Analog Brightness Control

OUT

V_OUT

2.7V to 5.5V L = 6.8µH

4.7µF

2.7V to 5.5V L = 6.8µH

4.7µF

^GI^NN^D

IND

V_IN

IND

V_IN

_OUTGND

C_IN

CAT

V_External

DAC Inputs

REV. 1.0.3 1/7/05

12 3 4 5 6 7...9

中文翻译

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与FAN5606相关器件

型号	品牌	获取价格	描述	数据表
FAN5606DMPX	FAIRCHILD	获取价格	Serial LED Driver with Current-Regulated, Step-Up DC/DC Converter
FAN5607	FAIRCHILD	获取价格	LED Driver with Adaptive Charge Pump DC/DC Converter
FAN5607HMPX	FAIRCHILD	获取价格	LED Driver with Adaptive Charge Pump DC/DC Converter
FAN5607HMPX_NL	FAIRCHILD	获取价格	LED Driver, 4-Segment, 4 X 4 MM, LEAD FREE, MO-220VGGC-3, MLP-16
FAN5608	FAIRCHILD	获取价格	Serial/Parallel LED Driver with Current-Regulated, Step-Up DC/DC Converter
FAN5608_06	FAIRCHILD	获取价格	Serial / Parallel LED Driver with Current-Regulated, Step-Up DC/DC Converter
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

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