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PT4115C Datasheet Preview

PT4115C Datasheet

500mA high light ratio LED constant current driver

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Shenzhen LIZE Electronic Technology Co., Ltd
规格说明书
PT4115C
6~36V/500mA 高调光比 LED 恒流驱动器
版本 V1.0
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LIZE

PT4115C Datasheet Preview

PT4115C Datasheet

500mA high light ratio LED constant current driver

No Preview Available !

PT4115C
6~36V/500mA 高调光比 LED 恒流驱动器
目录
1. 产品概述.................................................................................................................................................................4
2. 主要技术参数.........................................................................................................................................................4
3. 应用.........................................................................................................................................................................4
4. 典型应用电路图.....................................................................................................................................................4
5. 封装管脚.................................................................................................................................................................5
6. 管脚功能定义.........................................................................................................................................................5
7. 定购信息.................................................................................................................................................................5
8. 功能模块框图.........................................................................................................................................................6
9. 极限工作条件.........................................................................................................................................................6
10. 推荐使用条件...................................................................................................................................................... 6
11. 电气参数...............................................................................................................................................................7
12. 典型工作特性曲线.............................................................................................................................................. 8
13. 功能描述............................................................................................................................................................ 10
13.1 工作原理描述.......................................................................................................................................... 10
13.2 通过外部电流采样电阻 RS 设定 LED 平均电流................................................................................ 10
13.3 通过直流电压实现模拟调光..................................................................................................................10
13.4 通过 PWM 信号实现调光...................................................................................................................... 10
13.5 关断模式.................................................................................................................................................. 11
13.6 软启动模式.............................................................................................................................................. 11
13.7 欠压保护.................................................................................................................................................. 11
13.8 LED 开路保护.......................................................................................................................................... 11
13.9 过热保护.................................................................................................................................................. 11
14 元器件选择..........................................................................................................................................................11
14.1 电感.......................................................................................................................................................... 11
14.2 肖特基二极管 D...................................................................................................................................... 11
15 应用注意事项......................................................................................................................................................11
15.1 降低输出纹波.......................................................................................................................................... 11
15.2 低输入电压下工作.................................................................................................................................. 12
15.3 负载电流的热补偿.................................................................................................................................. 12
15.4 VIN GND 的电容,一定要靠近芯片,而且到 VIN GND 端口的走线尽量短和粗。.........12
16 典型应用电路..................................................................................................................................................... 12
17. 封装信息............................................................................................................................................................ 13
17.1 SOT23-5 封装..........................................................................................................................................13
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Page 2 of 13


Part Number PT4115C
Description 500mA high light ratio LED constant current driver
Maker LIZE
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PT4115C Datasheet PDF






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