FAN5607

更新时间： 2024-10-31 22:50:59

品牌	Logo	应用领域
飞兆/仙童 - FAIRCHILD		驱动器转换器泵
页数	文件大小	规格书
13页	546K
描述
LED Driver with Adaptive Charge Pump DC/DC Converter

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中文翻译

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FAN5607 数据手册

www.fairchildsemi.com

FAN5607

LED Driver with Adaptive Charge Pump DC/DC

Converter

Features

Description

• Parallel LED Driver Supports all Forward Voltages

• Adaptive V_OUTAdjustment to the Highest Diode Voltage

• Internally Matched LED Current Sources

• Built-in Charge Pump has Three Modes of Operation:

– 1X, 1.5X, and 2X Mode

The FAN5607 generates regulated output current from a bat-

tery with input voltage varying between 2.7V to 5.5V.

Switch reconﬁguration and fractional switching techniques

are utilized to achieve high efﬁciency over the entire input

voltage range. A proprietary internal circuitry continuously

monitors each LED current loop and automatically adjusts

the generated output DC voltage to the lowest minimum

value required by the LED having the highest forward volt-

age. This adaptive nature of the FAN5607 eliminates the

need for LED pre-selection (matching) and ensures opera-

tion at high efﬁciency. When the input voltage is sufﬁciently

high to sustain the programmed current level in the LEDs,

the FAN5607 re-conﬁgures itself to operate as a linear regu-

lator, and the DC-DC converter is turned off. Only two 0.1µF

to 1µF bucket capacitors and two 4.7µF input/output capaci-

tors are needed for proper operation. LED current can be

programmed using an external resistor. The resistor sets the

maximum LED current and a PWM signal applied to the

enable pin can modulate that current level between 0mA

(off) and the maximum level.

• Up to 93% Efﬁciency

• Low EMI, Low Ripple

• Up to 120mA Output Current (4 × 30mA )

• External Resistor to Set Maximum (100%) LED Current

• Enable Input Can be Duty-Cycle-Modulated to Control

LED Current Level Between 0 and 100%

• 2.4V to 5.5V Input Voltage Range

• I_CC< 1µA in Shutdown Mode

• 1MHz Operating Frequency

• Shutdown Isolates Output from Input

• Soft-Start Limits Inrush Current

• Short Circuit Protection

• Minimal External Components Needed

• Available in a 4x4mm 16-lead MLP Package

Applications

• Cell Phones

Soft-start circuitry prevents excessive current draw during

power on. The device has built-in short circuit protection.

• Handheld Computers

• PDA, DSC, MP3 Players

• Keyboard Backlight

• LED Displays

The device is available in 4x4mm 16-lead MLP package.

Typical Application

V_OUT

C_OUT

V_IN

V_OUT

V_IN

LED-

FAN5607

GND

LED-

CAP-

C_IN

CAP2

CAP1

CAP+

R_SET

CAP-

R_SET

REV. 1.0.0 6/22/04

12 3 4 5 6 7...13

中文翻译

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与FAN5607相关器件

型号	品牌	获取价格	描述	数据表
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
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

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