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参数资料
| 型号： | MIC4827YMM |
| 厂商： | Micrel Inc |
| 文件页数： | 8/15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.
V IN = 3.0V
L = 220μH
C OUT = 0.033μF
Lamp = 2in 2
R SW = 332k
R EL = 3.32M
TIME (2ms/div)
Figure 2. 108Hz Typical Output Waveform
Switching Frequency
The switching frequency of the converter is controlled via
an external resistor between R SW pin and V DD pin of the
device. The switching frequency increases as the
resistor value decreases. For resistor value selections,
see the “Typical Characteristics: Switching Frequency
vs. Switch Resistor” or use the equation below. The
switching frequency range is 8kHz to 200kHz, with an
accuracy of ±20%.
MIC4827
V IN = 3.0V
L = 220μH
C OUT = 0.033μF
Lamp = 2in 2
R SW = 562k
R EL = 1M
TIME (2ms/div)
Figure 3. 180Hz Output Waveform
In general, as the EL lamp frequency increases, the
amount of current drawn from the battery will increase.
The color of the EL lamp and the intensity are dependent
upon its frequency.
f SW (kHz) =
36
R SW ( M Ω )
EL Frequency
The EL lamp frequency is controlled via an external
resistor connected between R EL pin and V DD pin of the
device. The lamp frequency increases the resistor value
decreases. For resistor value selections, see the
“Typical Characteristics: EL Frequency vs. EL Resistor”
or use the equation below. The switching frequency
range is 60Hz to 1000Hz, with an accuracy of ±20%.
TIME (2ms/div)
Figure 4. 360Hz Output Waveform
f EL ( Hz )
July 2009
360
R EL ( M Ω )
8
Enable Function
The enable function of the MIC4827 is implemented by
switching the R SW and R EL resistor between ground and
V DD . When R SW and R EL are connected to ground, the
switch and the EL oscillators are disabled; therefore the
EL driver becomes disabled. When these resistors
connect to V DD , both the oscillators will function and the
EL driver is enabled.
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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