MIC4826

更新时间： 2024-11-20 22:05:07

品牌	Logo	应用领域
麦瑞 - MICREL		驱动器
页数	文件大小	规格书
12页	124K
描述
Low Input Voltage, 160VPP Output Voltage, EL Driver

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MIC4826 数据手册

MIC4826

Micrel

MIC4826

Low Input Voltage, 160V_PPOutput Voltage, EL Driver

Final Information

General Description

Features

Micrel’s MIC4826 is a high output voltage, DC to AC con-

verter, designed for driving EL (Electroluminescent) lamps.

The device operates from an input voltage range of 1.8V to

5.5V, making it suitable for 1-cell Li Ion and 2- or 3-cell

alkaline/NiCad/NiMHbatteryapplications.TheMIC4826con-

• 1.8V to 5.5V DC input voltage

• 160V regulated AC output waveform

• Independently adjustable EL lamp frequency

• Independently adjustable boost converter frequency

• 0.1µA shutdown current

vertsalowvoltageDCinputtoa160V ACoutputsignalthat

drives the EL lamp.

Applications

• LCD panel backlight

• Cellular phones

• PDAs

• Pagers

• Calculators

The MIC4826 is comprised of two stages: a boost stage, and

an H-bridge, lamp driver, stage. The boost stage steps the

input voltage up to +80V. The H-bridge stage then alternately

switches the +80V output to each terminal of the EL lamp,

thus creating a 160V AC signal to drive the EL lamp and

• Remote controls

• Portable phones

generate light.

The MIC4826 features separate oscillators for the boost- and

H-bridge stages. External resistors independently set the

operating frequency of each stage. This flexibility allows the

EL lamp circuit to be optimized for maximum efficiency and

brightness.

Ordering Information

Part Number

Standard Pb-Free

Temp. Range Package

The MIC4826 uses a single inductor and a minimum number

of external components, making it ideal for portable, space-

sensitive applications.

MIC4826BMM MIC4826YMM –40°C to +85°C MSOP-8

The MIC4826 is available in an 8-pin MSOP package with an

ambient temperature range of –40°C to +85°C.

Typical Application

220µH

1N4148

V_IN

C_OUT

0.01µF/100V

C_IN

10µF

MIC4826

VDD

442k

RSW

REL

GND

2in²EL LAMP

TIME (2ms/div)

High Voltage EL Driver

Micrel, Inc. • 1849 Fortune Drive • San Jose, CA 95131 • USA • tel + 1 (408) 944-0800 • fax + 1 (408) 474-1000• http://www.micrel.com

August 2004

MIC4826

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与MIC4826相关器件

型号	品牌	获取价格	描述	数据表
MIC4826_09	MICREL	获取价格	Low Input Voltage, 160VPP Output Voltage, EL Driver
MIC4826BMM	MICREL	获取价格	Low Input Voltage, 160VPP Output Voltage, EL Driver
MIC4826BMM	ROCHESTER	获取价格	EL DISPLAY DRIVER, PDSO8, MSOP-8
MIC4826BMM	MICROCHIP	获取价格	EL Driver, 1-Segment, PDSO8, MSOP-8
MIC4826BMMTR	MICROCHIP	获取价格	EL Driver, 1-Segment, PDSO8, MSOP-8
MIC4826BMMTR	ROCHESTER	获取价格	EL DISPLAY DRIVER, PDSO8, MSOP-8
MIC4826M	MICROCHIP	获取价格	EL DISPLAY DRIVER, PDSO8
MIC4826MS	MICROCHIP	获取价格	EL DISPLAY DRIVER, PDSO8
MIC4826YMM	MICREL	获取价格	Low Input Voltage, 160VPP Output Voltage, EL Driver
MIC4826YMMTR	MICROCHIP	获取价格	EL DISPLAY DRIVER, PDSO8, LEAD FREE, MSOP-8