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| 型号： | MIC4802YME |
| 厂商： | Micrel Inc |
| 文件页数： | 6/12页 |
| 文件大小： | 0K |
| 描述： | IC WHITE LED DVR 800MA 1CH 8SOIC |
| 标准包装： | 95 |
| 恒定电流： | 是 |
| 拓扑： | 线性（LDO），PWM |
| 输出数： | 1 |
| 内部驱动器： | 是 |
| 类型 - 主要： | 通用 |
| 类型 - 次要： | 白色 LED |
| 电源电压： | 3 V ~ 5.5 V |
| 安装类型： | 表面贴装 |
| 封装/外壳： | 8-SOIC（0.154"，3.90mm Width）裸露焊盘 |
| 供应商设备封装： | 8-SOIC-EP |
| 包装： | 管件 |
| 其它名称： | 576-3857-5 |
Micrel Inc.
Functional Diagram
Figure 1. MIC4802 Functional Block Diagram
MIC4802
Functional Description
The MIC4802 is a single channel linear LED driver with a
maximum 800mA current capability. The LED driver is
designed to maintain proper current regulation with LED
current accuracy of ±10%. The dropout is 280mV at
800mA. The low dropout of the linear drivers allows the
LEDs to be driven directly from the battery voltage and
eliminates the need for boost or large and inefficient
charge pumps. The maximum LED current for each
channel is set via an external resistor. Dimming is
controlled by applying a PWM signal to the EN pin. The
MIC4802 accommodates a wide PWM frequency range
as outlined in the application information section.
Block Diagram
As shown in Figure 1, the MIC4802 consists of current
mirrors set to copy a master current determined by R SET .
The linear LED drivers have a designated control block
for enabling and dimming of the LEDs. The MIC4802
dimming is controlled by the Ultra Fast PWM TM control
block that receives PWM signals for dimming.
January 2011
6
M9999-013111-B
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相关代理商/技术参数 |
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| MIC4802YME TR | 功能描述:LED照明驱动器 800mA Single Channel WLED Driver w/ Ultrafast PWM Control 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 |
| MIC4802YME-TR | 功能描述:LED 驱动器 IC 1 输出 线性 PWM 调光 800mA 8-SOIC 制造商:microchip technology 系列:- 包装:剪切带（CT） 零件状态:停产 类型:线性 拓扑:- 内部开关:是 输出数:1 电压 - 供电（最低）:3V 电压 -?供电（最高）:5.5V 电压 - 输出:- 电流 - 输出/通道:800mA 频率:- 调光:PWM 应用:照明 工作温度:-40°C ~ 125°C （TJ） 安装类型:表面贴装 封装/外壳:8-SOIC（0.154"，3.90mm 宽）裸焊盘 供应商器件封装:8-SOIC 标准包装:1 |
| MIC4807 | 制造商:MICREL 制造商全称:Micrel Semiconductor 功能描述:80V 8-Channel Addressable Low-Side Driver |
| MIC4807BN | 功能描述:IC DRIVER 80V 8CH ADDRESS 18-DIP RoHS:否 类别:集成电路 (IC) >> PMIC - MOSFET，电桥驱动器 - 外部开关 系列:- 标准包装:50 系列:- 配置:高端 输入类型:非反相 延迟时间:200ns 电流 - 峰:250mA 配置数:1 输出数:1 高端电压 - 最大（自引导启动）:600V 电源电压:12 V ~ 20 V 工作温度:-40°C ~ 125°C 安装类型:通孔 封装/外壳:8-DIP（0.300"，7.62mm） 供应商设备封装:8-DIP 包装:管件 其它名称:*IR2127 |
| MIC4811 | 制造商:MICREL 制造商全称:Micrel Semiconductor 功能描述:High Current 6 Channel Linear WLED Driver with DAM? and Ultra Fast PWM? Control |
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