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参数资料
| 型号： | ZXLD1356DACTC |
| 厂商： | Diodes Inc |
| 文件页数： | 25/29页 |
| 文件大小： | 0K |
| 描述： | IC LED DRIVER WHITE BCKLGT 6-DFN |
| 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，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： | 6-WDFN 裸露焊盘 |
| 供应商设备封装： | 6-DFN3030（3x3） |
| 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： | ZXLD1356DACDKR |
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A Product Line of
Diodes Incorporated
ZXLD1356/ ZXLD1356Q
Application Information (cont.)
Thermal Considerations (cont.)
Note that the device power dissipation will most often be a maximum at minimum supply voltage. It will also increase if the efficiency of the circuit
is low. This may result from the use of unsuitable coils, or excessive parasitic output capacitance on the switch output.
Thermal Compensation of Output Current
High luminance LEDs often need to be supplied with a temperature compensated current in order to maintain stable and reliable operation at all
drive levels. The LEDs are usually mounted remotely from the device so, for this reason, the temperature coefficients of the internal circuits for
the ZXLD1356 have been optimized to minimize the change in output current when no compensation is employed. If output current
compensation is required, it is possible to use an external temperature sensing network - normally using Negative Temperature Coefficient (NTC)
thermistors and/or diodes, mounted very close to the LED(s). The output of the sensing network can be used to drive the ADJ pin in order to
reduce output current with increasing temperature.
Layout Considerations
LX pin
The LX pin of the device is a fast switching node, so PCB tracks should be kept as short as possible. To minimize ground 'bounce', the ground
pin of the device should be soldered directly to the ground plane.
Coil and Decoupling Capacitors and Current Sense Resistor
It is particularly important to mount the coil and the input decoupling capacitor as close to the device pins as possible to minimize parasitic
resistance and inductance, which will degrade efficiency. It is also important to minimize any track resistance in series with current sense resistor
R S . Its best to connect V IN directly to one end of R S and Isense directly to the opposite end of R S with no other currents flowing in these tracks. It
is important that the cathode current of the Schottky diode does not flow in a track between R S and V IN as this may give an apparent higher
measure of current than is actual because of track resistance.
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.
3.3k
100nF
ADJ
ZXLD1356
GND
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 Boards
ZXLD1356 evaluation boards are available on request, which have connection terminals that allow customers to connect their own LED products
to the board.
ZXLD1356/ ZXLD1356Q
Document number: DS33470 Rev. 4 - 2
25 of 29
www.diodes.com
October 2012
? Diodes Incorporated
相关PDF资料 |
PDF描述 |
|---|---|
| ZXLD1360ET5TA | IC LED DRIVR WHITE BCKLGT TSOT-5 |
| ZXLD1362ET5TA | IC LED DRIVR WHITE BCKLGT TSOT-5 |
| ZXLD1366DACTC | IC LED DRIVER WHITE BCKLGT 6-DFN |
| ZXLD1370EST16TC | IC LED DRVR HIGH BRIGHT TSSOP-16 |
| ZXLD1371QESTTC | IC LED DRIVER |
相关代理商/技术参数 |
参数描述 |
|---|---|
| ZXLD1356ET5TA | 功能描述:LED照明驱动器 550mA, 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 |
| ZXLD1356QET5TA | 制造商:DIODES 制造商全称:Diodes Incorporated 功能描述:60V 550mA LED DRIVER and AUTOMOTIVE GRADE |
| ZXLD1360 | 制造商:DIODES 制造商全称:Diodes Incorporated 功能描述:30V 1A LED DRIVER with AEC-Q100 |
| ZXLD1360ET5TA | 功能描述:LED照明驱动器 7-30V Input 1Amp w/Internal Switch 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 |
| ZXLD1360ET5TA-CUT TAPE | 制造商:DIODES 功能描述:ZXLD1360 Series 1 A 1 MHz SMT LED Driver with Internal Switch - TSOT-23-5 |
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