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MIC4827YMM PDF预览

MIC4827YMM

更新时间: 2024-01-04 13:54:22
品牌 Logo 应用领域
麦瑞 - MICREL 驱动器
页数 文件大小 规格书
15页 402K
描述
Low Input Voltage, 180VPP Output Voltage, EL Driver

MIC4827YMM 技术参数

是否Rohs认证: 符合生命周期:Active
包装说明:LEAD FREE, MSOP-8Reach Compliance Code:compliant
ECCN代码:EAR99HTS代码:8542.39.00.01
Factory Lead Time:22 weeks风险等级:5.28
接口集成电路类型:EL DISPLAY DRIVERJESD-30 代码:S-PDSO-G8
JESD-609代码:e4长度:3 mm
湿度敏感等级:1复用显示功能:NO
位数/字符:4-DIGIT功能数量:1
区段数:1端子数量:8
最高工作温度:85 °C最低工作温度:-40 °C
封装主体材料:PLASTIC/EPOXY封装代码:TSSOP
封装形状:SQUARE封装形式:SMALL OUTLINE, THIN PROFILE, SHRINK PITCH
峰值回流温度(摄氏度):260认证状态:Not Qualified
座面最大高度:1.1 mm最大供电电压:5.5 V
最小供电电压:1.8 V标称供电电压:3 V
表面贴装:YES温度等级:INDUSTRIAL
端子面层:Nickel/Palladium/Gold (Ni/Pd/Au)端子形式:GULL WING
端子节距:0.65 mm端子位置:DUAL
处于峰值回流温度下的最长时间:40宽度:3 mm

MIC4827YMM 数据手册

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MIC4827  
Low Input Voltage, 180VPP Output Voltage,  
EL Driver  
General Description  
Features  
1.8V to 5.5V DC input voltage  
Micrel’s MIC4827 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-  
180VPP regulated AC output waveform  
Independently adjustable EL lamp frequency  
Independently adjustable boost converter frequency  
0.1µA shutdown current  
cellalkaline/NiCad/NiMH  
battery  
applications.  
The  
MIC4827 converts a low voltage DC input to a 180VPP AC  
output signal that drives the EL lamp.  
The MIC4827 is comprised of two stages: a boost stage,  
and an H-bridge, lamp driver, stage. The boost stage steps  
the input voltage up to +90V. The H-bridge stage then  
alternately switches the +90V output to each terminal of  
the EL lamp, thus creating a 180VPP AC signal to drive the  
EL lamp and generate light.  
Applications  
LCD panel backlight  
Cellular phones  
PDAs  
Pager  
The MIC4827 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.  
Calculators  
Remote controls  
Portable phones  
The MIC4827 uses a single inductor and a minimum  
number of external components, making it ideal for  
portable, space-sensitive applications.  
The MIC4827 is available in an 8-pin MSOP package with  
an ambient temperature range of –40°C to +85°C.  
Typical Application  
L1  
220µH  
D1  
BAV20WS  
VIN  
COUT  
0.033µF/100V  
CIN  
10µF  
MIC4827  
1
2
3
4
5
VDD  
SW  
332k  
6
8
7
RSW  
REL  
CS  
VA  
VB  
3.32M  
GND  
TIME (2ms/div)  
2in2 EL LAMP  
High Voltage EL Driver  
Micrel Inc. • 2180 Fortune Drive • San Jose, CA 95131 • USA • tel +1 (408) 944-0800 • fax + 1 (408) 474-1000 • http://www.micrel.com  
M9999-070709-A  
(408) 955-1690  
July 2009  

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