PT4115 PDF даташит
Спецификация PT4115 изготовлена «LIZE» и имеет функцию, называемую «1.2A high light ratio LED constant current driver». |
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Детали детали
Номер произв | PT4115 |
Описание | 1.2A high light ratio LED constant current driver |
Производители | LIZE |
логотип |
17 Pages
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规格说明书
PT4115
6~36V/1.2A 高调光比 LED 恒流驱动器
版本 V1.0
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深圳市福田区天安数码城创新科技广场二期西座 901 室
深圳市励致电子技术有限公司
TEL:0755-8288 7125
FAX:0755-8835 3509
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..................................................................................... 11
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 ...............................................................................................................12
15.1 降低输出纹波 ......................................................................................................12
Page 2 of 17
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深圳市福田区天安数码城创新科技广场二期西座 901 室
深圳市励致电子技术有限公司
TEL:0755-8288 7125
FAX:0755-8835 3509
15.2 低输入电压下工作 ...............................................................................................12
15.3 负载电流的热补偿 ...............................................................................................12
16 典型应用电路 ...............................................................................................................13
17. 封装信息......................................................................................................................14
17.1 SOT89-5 封装 ......................................................................................................14
17.2 SOT23-5 封装 ......................................................................................................15
17.3 ESOP8 封装 ........................................................................................................16
18 修订记录.......................................................................................................................17
Page 3 of 17
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