Datasheet > MIC4811

MIC4811

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	558K
描述
High Current 6 Channel Linear WLED Driver with DAM? and Ultra Fast PWM? Control

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MIC4811 数据手册

MIC4811

High Current 6 Channel Linear WLED

Driver with DAM™ and Ultra Fast

PWM™ Control

General Description

Features

The MIC4811 is a high efficiency linear White LED

(WLED) driver designed to drive up to six high current

WLEDs for signage lighting. The MIC4811 provides the

highest possible efficiency as this architecture has no

switching losses present in traditional charge pumps or

inductive boost circuits. The MIC4811 provides six linear

drivers which maintain constant current for up to six

WLEDs. It features a typical dropout of 100mV at 50mA.

• High Efficiency (no Voltage Boost losses)

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

• Input voltage range: 3.0V to 5.5V

• LED current range up to 50mA per channel

• Programmable LED current with external resistor

• Dropout of 100mV at 50mA

• Matching better than ±1% (typical)

The MIC4811 features Dynamic Average Matching™

(DAM™) which is specifically designed to provide optimum

matching across all WLEDs. The high accuracy (±1%

typical) current regulated WLED channels ensure uniform

display illumination under all conditions. The brightness is

controlled through an Ultra Fast PWM™ interface

operating down to less than 1% duty cycle.

• Current Accuracy better than ±1% (typical)

• Maintains proper regulation regardless of how many

channels are utilized

• 10-pin MSOP package

Applications

The MIC4811 is available in an 10-pin MSOP 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.

• Billboard displays

• Marquee displays

• Instrument displays

• LCD display modules

____________________________________________________________________________________________________________

Typical Application

High Current Lighting (Six WLEDs)

Ultra Fast PWM, DAM and Dynamic Average Matching are 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

M9999-123110-A

December 2010

12 3 4 5 6 7...12

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与MIC4811相关器件

型号	品牌	获取价格	描述	数据表
MIC4811_1104	MICREL	获取价格	High Current 6 Channel Linear WLED Driver with DAM? and Ultra Fast PWM? Control
MIC4811YMM	MICREL	获取价格	High Current 6 Channel Linear WLED Driver with DAM? and Ultra Fast PWM? Control
MIC4811YMM-TR	MICROCHIP	获取价格	LED DISPLAY DRIVER
MIC4812	MICREL	获取价格	High Current 6 Channel Linear WLED Driver with DAM? and Ultra Fast PWM? Control
MIC4812	MICROCHIP	获取价格	The MIC4812 is a high efficiency linear White LED (WLED) driver designed to drive up to si
MIC4812_1104	MICREL	获取价格	High Current 6 Channel Linear WLED Driver wit
MIC4812YMME	MICREL	获取价格	High Current 6 Channel Linear WLED Driver with DAM? and Ultra Fast PWM? Control
MIC4823M	MICROCHIP	获取价格	EL DISPLAY DRIVER, PDSO8
MIC4823MS	MICROCHIP	获取价格	EL DISPLAY DRIVER, PDSO8
MIC4826	MICREL	获取价格	Low Input Voltage, 160VPP Output Voltage, EL Driver

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