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| 型号： | ZXLD1356DACTC |
| 厂商： | Diodes Inc |
| 文件页数： | 19/29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
Setting Nominal Average Output Current with External Resistor R S
The nominal average output current in the LED(s) is determined by the value of the external current sense resistor (R S ) connected between V IN
and I SENSE and is given by:
I OUTnom = 0.2/R S [for R S > 0.36 ? ]
The table below gives values of nominal average output current for several preferred values of current setting resistor (R S ) in the typical
application circuit shown on page 1:
R S ( ? )
0.36
0.56
1.33
Nominal Average Output
Current (mA)
555
357
150
The above values assume that the ADJ pin is floating and at a nominal voltage of V REF (= 1.25V). Note that R S = 0.36V is the minimum allowed
value of sense resistor under these conditions to maintain switch current below the specified maximum value.
It is possible to use different values of R S if the ADJ pin is driven from an external voltage. (See next section).
Output Current Adjustment by External DC Control Voltage
The ADJ pin can be driven by an external dc voltage (V ADJ ), as shown, to adjust the output current to a value above or below the nominal
average value defined by R S .
+
ADJ
ZXLD1356
GND
DC
GND
The nominal average output current in this case is given by:
I OUTdc = (V ADJ /1.25) x (0.2/R S ) [for 0.3< V ADJ <2.5V]
Note that 100% brightness setting corresponds to V ADJ = V REF . When driving the ADJ pin above 1.25V, R S must be increased in proportion to
prevent I OUTdc exceeding 550mA maximum.
The input impedance of the ADJ pin is 50k ? ±25% for voltages below V REF and 14.2k ? ±25% for voltages above V REF +100mV.
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 :
?
V ADJ
PWM
0V
GND
ADJ
ZXLD1356
GND
ZXLD1356/ ZXLD1356Q
Document number: DS33470 Rev. 4 - 2
19 of 29
www.diodes.com
October 2012
? Diodes Incorporated
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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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