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参数资料
| 型号： | MIC4827YMM |
| 厂商： | Micrel Inc |
| 文件页数： | 1/15页 |
| 文件大小： | 0K |
| 描述： | IC EL DRIVER 180VPP OUT 8-MSOP |
| 标准包装： | 100 |
| 类型： | EL 灯驱动器 |
| 频率： | 60 ~ 1000 Hz |
| 电流 - 电源： | 21µA |
| 电源电压： | 1.8 V ~ 5.5 V |
| 工作温度： | -40°C ~ 85°C |
| 封装/外壳： | 8-TSSOP，8-MSOP（0.118"，3.00mm 宽） |
| 供应商设备封装： | 8-MSOP |
| 包装： | 管件 |
| 产品目录页面： | 1083 (CN2011-ZH PDF) |
| 其它名称： | 576-1803-5 MIC4827YMM-ND |
MIC4827
Low Input Voltage, 180V PP Output Voltage,
EL Driver
General Description
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-
cellalkaline/NiCad/NiMH battery applications. The
MIC4827 converts a low voltage DC input to a 180V PP 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 180V PP AC signal to drive the
EL lamp and generate light.
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.
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
Features
? 1.8V to 5.5V DC input voltage
? 180V PP regulated AC output waveform
? Independently adjustable EL lamp frequency
? Independently adjustable boost converter frequency
? 0.1μA shutdown current
Applications
? LCD panel backlight
? Cellular phones
? PDAs
? Pager
? Calculators
? Remote controls
? Portable phones
V IN
C IN
10μF
L1
220μH
MIC4827
D1
BAV20WS
C OUT
0.033μF/100V
332k
3.32M
1
2
3
4
VDD
RSW
REL
GND
SW
CS
VA
VB
5
6
8
7
TIME (2ms/div)
2in 2 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
July 2009
M9999-070709-A
(408) 955-1690
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相关代理商/技术参数 |
参数描述 |
|---|---|
| MIC4827YMM TR | 功能描述:LED照明驱动器 180V EL Driver (Lead Free) RoHS:否 制造商:STMicroelectronics 输入电压:11.5 V to 23 V 工作频率: 最大电源电流:1.7 mA 输出电流: 最大工作温度: 安装风格:SMD/SMT 封装 / 箱体:SO-16N |
| MIC4827YMM | 制造商:Micrel Inc 功能描述:Driver IC |
| MIC4830 | 制造商:MICREL 制造商全称:Micrel Semiconductor 功能描述:Low Noise 180Vp-p EL Driver |
| MIC4830_09 | 制造商:MICREL 制造商全称:Micrel Semiconductor 功能描述:Low Noise 180VPP EL Driver |
| MIC4830YML | 制造商:Rochester Electronics LLC 功能描述: 制造商:RF Micro Devices Inc 功能描述: |
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