Datasheet > MIC4826_09

MIC4826_09

更新时间： 2024-11-21 07:17:03

品牌	Logo	应用领域
麦瑞 - MICREL		驱动器
页数	文件大小	规格书
12页	618K
描述
Low Input Voltage, 160VPP Output Voltage, EL Driver

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MIC4826_09 数据手册

MIC4826

Micrel

MIC4826

Low Input Voltage, 160V Output Voltage, EL Driver

General Description

Features

Micrel’sMIC4826isahighoutputvoltage,DCtoACconverter,

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/NiMH battery applications. The MIC4826 converts

• 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

a low voltage DC input to a 160V AC output signal that

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

MIC4826BMM MIC4826YMM –40°C to +85°C

MSOP-8

The MIC4826 uses a single inductor and a minimum number

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

sensitive applications.

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

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

Typical Application

V_IN

220µH

BAV19WS

C_OUT

= 3.0V

L^I=^N220µH�

0.01µF/100V

C_IN

10µF

MIC4826

C_OUT= 0.01µF

Lamp = 2in²�

VDD

= 332k�

R^S_E^W_L= 3.32M

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) 944-0970 • http://www.micrel.com

March 2009

MIC4826

12 3 4 5 6 7...12

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与MIC4826_09相关器件

型号	品牌	获取价格	描述	数据表
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
MIC4826YMMTR	MICREL	获取价格	EL DISPLAY DRIVER, PDSO8, LEAD FREE, MSOP-8