MIC4801

更新时间： 2024-11-25 10:56:59

品牌	Logo	应用领域
麦瑞 - MICREL		驱动器
页数	文件大小	规格书
12页	555K
描述
High Efficiency 600mA Single Channel Linear WLED Driver with Ultra Fast PWM? Control

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MIC4801 数据手册

MIC4801

High Efficiency 600mA Single Channel

Linear WLED Driver with

Ultra Fast PWM™ Control

General Description

Features

The MIC4801 is a high efficiency White LED (WLED)

driver designed to drive a single LED up to 600mA. The

MIC4801 constant current driver is designed to drive high

power LED’s in various lighting applications. The MIC4801

provides the highest possible efficiency as this architecture

has no switching losses present in traditional charge

pumps or inductive boost circuits. It features a typical

dropout of 130mV at 400mA. This allows the LEDs to be

driven directly from the voltage source eliminating

switching noise/losses present with the use of boost

circuitry. The high accuracy (±1% typical) current regulated

WLED channel ensures uniform display illumination under

all conditions. The brightness is controlled through an Ultra

Fast PWM™ Control interface operating down to less than

1% duty cycle.

• High Efficiency (no Voltage Boost losses)

• Ultra Fast PWM™ control (200Hz to 500kHz)

• Input voltage range: 3.0V to 5.5V

• Dropout of 130mV at 400mA

• Programmable LED current with external resistor

• Current accuracy of ±1% typical

Applications

• Bill board displays

• Marquee displays

• Instrument displays

• Architectural lighting

The MIC4801 is available in an 8-pin SOIC package with a

junction temperature range of -40°C to +125°C.

Datasheets and support documentation can be found on

Micrel’s web site at: www.micrel.com.

____________________________________________________________________________________________________________

Typical Application

High Current Lighting Schematic

Ultra Fast PWM is a trademark of Micrel, Inc.

Micrel Inc. • 2180 Fortune Drive • San Jose, CA 95131 • USA • tel +1 (408) 944-0800 • fax + 1 (408) 474-1000 • http://www.micrel.com

M9999-011811-A

January 2011

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与MIC4801相关器件

型号	品牌	获取价格	描述	数据表
MIC4801YM	MICREL	获取价格	High Efficiency 600mA Single Channel Linear WLED Driver with Ultra Fast PWM? Control
MIC4801YM	MICROCHIP	获取价格	LED DISPLAY DRIVER, PDSO8
MIC4801YMTR	MICREL	获取价格	IC,LASER DIODE/LED DRIVER,SOP,8PIN,PLASTIC
MIC4801YM-TR	MICROCHIP	获取价格	LED DISPLAY DRIVER
MIC4802	MICREL	获取价格	High Efficiency 800mA Single Channel Linear WLED Driver with Ultra Fast PWM? Control
MIC4802	MICROCHIP	获取价格	The MIC4802 is a high efficiency White LED (WLED) driver designed to drive a single LED up
MIC4802YME	MICREL	获取价格	High Efficiency 800mA Single Channel Linear WLED Driver with Ultra Fast PWM? Control
MIC4802YME	MICROCHIP	获取价格	LED DISPLAY DRIVER, PDSO8
MIC4802YMETR	MICREL	获取价格	IC,LASER DIODE/LED DRIVER,SOP,8PIN,PLASTIC
MIC4802YME-TR	MICROCHIP	获取价格	LED DISPLAY DRIVER