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| 型号： | ZXLD1350ET5TA |
| 厂商： | Diodes Inc |
| 文件页数： | 13/22页 |
| 文件大小： | 0K |
| 描述： | IC LED DRIVR WHITE BCKLGT TSOT-5 |
| 产品培训模块： | ZXLD1350 |
| 特色产品： | LED Driver Solutions |
| 标准包装： | 1 |
| 拓扑： | PWM，降压（降压） |
| 输出数： | 1 |
| 内部驱动器： | 是 |
| 类型 - 主要： | 车载 |
| 类型 - 次要： | 高亮度 LED（HBLED），白色 LED |
| 频率： | 1MHz |
| 电源电压： | 7 V ~ 30 V |
| 输出电压： | 30V |
| 安装类型： | 表面贴装 |
| 封装/外壳： | SOT-23-5 细型，TSOT-23-5 |
| 供应商设备封装： | TSOT-23-5 |
| 包装： | 标准包装 |
| 工作温度： | -40°C ~ 105°C |
| 产品目录页面： | 1478 (CN2011-ZH PDF) |
| 其它名称： | ZXLD1350ET5DKR |
A Product Line of
Diodes Incorporated
ZXLD1350
30V 350mA LED DRIVER with AEC-Q100
Application Information (Continued)
Output Current Adjustment by PWM Control
Directly driving ADJ input
A Pulse Width Modulated (PWM) signal with duty cycle D PWM can be applied to the ADJ pin, as shown below, to adjust the
output current to a value above or below the nominal average value set by resistor R S :
PWM
V ADJ
0V
ADJ
ZXLD1350
GND
GND
Driving the ADJ input via open collector transistor
The recommended method of driving the ADJ pin and controlling the amplitude of the PWM waveform is to use a small NPN
switching transistor as shown below:
PWM
ADJ
ZXLD1350
GND
GND
This scheme uses the 200k resistor between the ADJ pin and the internal voltage reference as a pull-up resistor for the
external transistor.
Driving the ADJ input from a microcontroller
Another possibility is to drive the device from the open drain output of a microcontroller. The diagram below shows one
method of doing this:
MCU
10k
ADJ
ZXLD1350
GND
The diode and resistor suppress possible high amplitude negative spikes on the ADJ input resulting from the drain-source
capacitance of the FET. Negative spikes at the input to the device should be avoided as they may cause errors in output
current, or erratic device operation.
PWM dimming can be further split into high frequency and low frequency PWM dimming and how the device responds to
these.
ZXLD1350
Document number: DS33468 Rev. 8 - 2
13 of 22
www.diodes.com
March 2011
? Diodes Incorporated
相关PDF资料 |
PDF描述 |
|---|---|
| ZXLD1352ET5TA | IC LED DRIVER HIGH BRIGHT TSOT-5 |
| ZXLD1356DACTC | IC LED DRIVER WHITE BCKLGT 6-DFN |
| ZXLD1360ET5TA | IC LED DRIVR WHITE BCKLGT TSOT-5 |
| ZXLD1362ET5TA | IC LED DRIVR WHITE BCKLGT TSOT-5 |
| ZXLD1366DACTC | IC LED DRIVER WHITE BCKLGT 6-DFN |
相关代理商/技术参数 |
参数描述 |
|---|---|
| ZXLD1350ET5TA-CUT TAPE | 制造商:DIODES 功能描述:ZXLD1350 Series 350 mA 1 MHz SMT LED Driver with Internal Switch - TSOT-23-5 |
| ZXLD1350EV3 | 制造商:ZETEX 制造商全称:ZETEX 功能描述:circuit diagram and bill of materials |
| ZXLD1352 | 制造商:ZETEX 制造商全称:ZETEX 功能描述:350mA LED driver with internal switch and enhanced PWM dimming range |
| ZXLD1352ET5TA | 功能描述:LED照明驱动器 350mA, 30V LED Drver, Int Swtch 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 |
| ZXLD1356 | 制造商:DIODES 制造商全称:Diodes Incorporated 功能描述:High accuracy 550mA, 60V LED driver with internal switch |
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