供应PT4211是一款连续电感电流导通模式的降压恒流源
| 价 格： | 面议 | |
| 型号/规格： | PT4211 | |
| 品牌/商标： | 上海华润矽威 |
PT4211是一款连续电感电流导通模式的降压恒流源，专门针对用于驱动1-3颗串联LED而设计。PT4211可接受的输入电压范围从5伏到30伏，输出电流可调至350mA。
PT4211 内置功率开关，采用高端电流采样方式，通过一个外部电阻设定LED平均电流。专用调光DIM引脚可以接受宽范围的PWM调光信号。当DIM的电压低于0.4伏时，功率开关关断,PT4211进入极低工作电流的待机状态。
PT4211采用SOT23-5封装。
关键特性
极少的外部元器件
输入电压范围从5V到30V
输出350mA电流
专用调光管脚可接受PWM调光
3%的输出电流精度
LED开路自然保护
高达93%的效率
输出可调的恒流控制方法
软过温保护尽大可能减少高温下LED闪烁
SOT23-5封装
- 所属城市：广东 深圳
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- 联系人： 郑先生
- 电话：0755-82570180
- 传真：0755-82570180
- 手机：18948314942
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