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BCR450 Constant Current LED Driver linear（LDO），PWM general 1MHz 8V~27V 6V SOT-163/SOT23-6 50s
| 恒流 Constant Current | 是 YES |
| 恒压 Constant Voltage | |
| 拓扑 Topology | 线性（LDO），PWM Linear (LDO), PWM |
| 输出数 Number of Outputs | 1 |
| 内部驱动器 Internal Driver | 是 YES |
| 初级类型 Type - Primary | 通用 General Purpose |
| 次级类型 Type - Secondary | |
| 频率 Frequency | 1MHz |
| 电源电压 Voltage - Supply | 8V~27V |
| 输出电压 Voltage - Output | 6V |
| Description & Applications | FEATURES • Power LED Driver IC • Low voltage drop across sense resistor, 0.15 V typical • High output current precision • Operating voltage fro 8 to 27 V • Over voltage protection • Overtemperature current foldback and Thermal shut down function • Adjustable Constant LED Current up to 85 mA in stand alone operation • Precise Internal bandgap enables High output current accuracy • Up to 2.5 A LED current possible by using external transistor • EN Input for PWM LED brightness control and On/Off control • Very Low Standby Current • Minimum number of external components required, no inductors • Very small SC-74 package: 2.9 mm x 2.5 mm x 1.1 mm Benefits • High level of colour control due to high output current precision • Small space requirement • No electro- magnetic interference • Active thermal monitoring of chip and LED temperature with current fold- back to avoid thermal overstress • Low cost device • Scalable output stage optimizing cost and space Typical Applications • General lighting e.g. retrofits • Architectural lighting, Medical and Dental lighting • Transportation like train and aircraft lighting • Strobe lighting • Universal constant current source • Signal and marker lights for orientation or navigation • LED controller for industrial applications, not qualified to AECQ-100 |
| 描述与应用 | 特点 •电源LED驱动IC •低电压检测电阻，压降典型值0.15 V •高输出电流精度 •工作电压来回8至27 V •过电压保护 •过热电流折返和热关机功能 •可调恒定LED电流高达85 mA的独立操作 •精确的内部带隙，实现高输出电流精度 •高达2.5 A LED电流可以通过使用外部晶体管 •EN输入PWM控制LED亮度和开/关控制 •极低的待机电流 •最小所需的外部元件数量，无需电感器 •非常小的SC-74封装：2.9毫米×2.5毫米×1.1毫米 优点 •由于高输出电流精度色彩控制水平高 •小空间要求 •无电磁干扰 •主动热监测芯片温度和LED电流折返，以避免过度热 •低成本设备 •可扩展的输出级优化成本和空间 典型应用 •一般照明，例如改造 •建筑照明，医疗及牙科照明 •火车和飞机等交通设施照明 •频闪照明 •通用恒流源 •定向或导航信号和标志灯 •LED控制器为工业应用，而不是符合AECQ-100 |
