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| 型号： | ZXLD1362ET5TA |
| 厂商： | Diodes Inc |
| 文件页数： | 22/24页 |
| 文件大小： | 0K |
| 描述： | IC LED DRIVR WHITE BCKLGT TSOT-5 |
| 特色产品： | LED Driver Solutions ZXLD1362 - Miniature 1A LED Driver |
| 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，背光 |
| 类型 - 次要： | 高亮度 LED（HBLED） |
| 频率： | 500kHz |
| 电源电压： | 6 V ~ 60 V |
| 输出电压： | 60V |
| 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 ~ 125°C |
| 产品目录页面： | 1478 (CN2011-ZH PDF) |
| 其它名称： | ZXLD1362ET5DKR |
A Product Line of
Diodes Incorporated
ZXLD1362
Application Information (cont.)
ADJ Pin
The ADJ pin is a high impedance input for voltages up to 1.35V
so, when left floating, PCB tracks to this pin should be as short as
possible to reduce noise pickup. A 100nF capacitor from the ADJ
pin to ground will reduce frequency modulation of the output
under these conditions. An additional series 3.3k ? resistor can
also be used when driving the ADJ pin from an external circuit
(see below). This resistor will provide filtering for low frequency
noise and provide protection against high voltage transients.
Dimming Output Current Using PWM
Low Frequency PWM Mode
When the ADJ pin is driven with a low frequency PWM signal
(eg 100Hz), with a high level voltage V ADJ and a low level of
zero, the output of the internal low pass filter will swing
between 0V and V ADJ , causing the input to the shutdown circuit
to fall below its turn-off threshold (200mV nom) when the ADJ
pin is low. This will cause the output current to be switched on
and off at the PWM frequency, resulting in an average output
current I OUTavg proportional to the PWM duty cycle.
3.3k
100nF
ADJ
ZXLD1362
GND
(See Figure 4 - Low frequency PWM operating waveforms).
GND
High Voltage Tracks
Avoid running any high voltage tracks close to the ADJ pin, to
reduce the risk of leakage currents due to board contamination.
The ADJ pin is soft-clamped for voltages above 1.35V to
desensitize it to leakage that might raise the ADJ pin voltage and
cause excessive output current. However, a ground ring placed
around the ADJ pin is recommended to minimize changes in
output current under these conditions.
Evaluation PCB
ZXLD1362 evaluation boards are available on request and
provide quick testing of the ZXLD1362 device.
Figure 4. Low Frequency PWM Operating Waveforms
The average value of output current in this mode is given by:
I OUTavg = 0.1D PWM /R S [for D PWM >0.001]
This mode is preferable if optimum LED 'whiteness' is required.
It will also provide the widest possible dimming range (approx.
1000:1) and higher efficiency at the expense of greater output
ripple.
ZXLD1362
Document number: DS33472 Rev. 5 - 2
22 of 24
www.diodes.com
May 2012
? Diodes Incorporated
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| ZXLD1937ET5TA | IC LED DRIVR WHITE BCKLGT TSOT-5 |
相关代理商/技术参数 |
参数描述 |
|---|---|
| ZXLD1362ET5TA-CUT TAPE | 制造商:DIODES 功能描述:ZXLD1362 Series 1 A 1 MHz SMT LED Driver with Internal Switch - TSOT-23-5 |
| ZXLD1366 | 制造商:DIODES 制造商全称:Diodes Incorporated 功能描述:High accuracy 1A, 60V LED driver with internal switch |
| ZXLD1366_10 | 制造商:DIODES 制造商全称:Diodes Incorporated 功能描述:HIGH ACCURACY 1A, 60V LED DRIVER WITH INTERNAL SWITCH |
| ZXLD1366DACTC | 功能描述:LED照明驱动器 1A, 60V 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 |
| ZXLD1366DACTC-CUT TAPE | 制造商:DIODES 功能描述:ZXLD1366 Series 1A 500 kHz High Accuracy LED Driver with Internal Switch - DFN-6 |
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