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参数资料
| 型号： | MIC4827YMM |
| 厂商： | Micrel Inc |
| 文件页数： | 9/15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 |
Micrel, Inc.
Application Information
Inductor
In general, smaller value inductors, which can handle
more current, are more suitable to drive larger size
lamps. As the inductor value decreases, the switching
frequency (controlled by R SW ) should be increased to
avoid saturation or the input voltage should be
increased. Typically, inductor values ranging from 220μH
to 560μH can be used. Murata offers the LQH3C series
up to 560μH and LQH4C series up to 470μH, with low
DC resistance. A 220μH Murata (LQH4C221K04)
inductor is recommended for driving a lamp size of 3
square inches. It has a maximum DC resistance of 4.0 ?
MIC4827
Diode
The diode must have a high reverse voltage (150V),
since the output voltage at the CS pin can reach up to
110V. A fast switching diode with lower forward voltage
and higher reverse voltage (150V), such as BAV20WS,
can be used to enhance efficiency.
Output Capacitor
Low ESR capacitors should be used at the regulated
boost output (CS pin) of the MIC4827 to minimize the
switching output ripple voltage. Selection of the capacitor
value will depend upon the peak inductor current,
inductor size, and the load. MuRata offers the GRM42-6
series with up to 0.047μF at 100V, with a X7R
temperature coefficient in 1206 surface-mount package.
Typically, values ranging from 0.01μF to 0.1μF at 100V
can be used for the regulated boost output capacitor
Pre-designed Application Circuit
Li-Ion Battery
V IN
3.0V to 4.2V
L1
220 H
Murata
LQH4C221K04
D1
BAV20WS
C2
10 F/6.3V
Murata
GRM42-6X5R106K6.3
C1
0.22 F/10V
Murata
GRM39X7R 224K10
R2
3.32M
R1
332k
1
2
3
MIC4827
VDD SW
RSW CS
REL VA
5
6
8
C OUT
0.01 F/100V
GRM40X7R103K
4
GND
VB
7
3in 2 LAMP
V IN
3.3V
I IN
28mA
V A – V B
180V PP
F EL
106Hz
Lamp Size
3in 2
TIME (2ms/div)
Figure 5. Typical 100Hz EL Driver for 3in 2 Lamp
July 2009
9
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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