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| 型号： | ZXLD1352ET5TA |
| 厂商： | Diodes Inc |
| 文件页数： | 15/21页 |
| 文件大小： | 0K |
| 描述： | IC LED DRIVER HIGH BRIGHT TSOT-5 |
| 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： | ZXLD1352ET5DKR |
A Product Line of
Diodes Incorporated
ZXLD1352
Application Information (Continued)
Inductor Selection
Recommended inductor values for the ZXLD1352 are in the range 47μH to 220μH.
Higher values of inductance are recommended at higher supply voltages in order to minimize errors due to switching delays,
which result in increased ripple and lower efficiency. Higher values of inductance also result in a smaller change in output current
over the supply voltage range. (See graphs). The inductor should be mounted as close to the device as possible with low
resistance connections to the LX and V IN pins.
The chosen coil should have a saturation current higher than the peak output current and a continuous current rating above the
required mean output current.
Suitable coils for use with the ZXLD1352 are listed in the table below:
Part No.
DO1608C
MSS6132ML
CD104-MC
NP04SB470M
L
( μ H)
47
47
68
100
220
47
DCR
( Ω )
0.64
0.38
0.58
0.82
0.55
0.27
I SAT (A)
0.5
0.56
0.47
0.39
0.53
0.38
Manufacturer
CoilCraft
Sumida
Taiyo Yuden
V IN – V LED – I a v g ( R S + r L + R LX )
V L ED + VD + I av g ( R S + r L )
The inductor value should be chosen to maintain operating duty cycle and switch 'on'/'off' times within the specified limits over
the supply voltage and load current range.
The following equations can be used as a guide, with reference to Figure 1 - Operating waveforms.
LX Switch 'On' time
L Δ I
T ON = ----------------------------------------------------------------------------------------
Note: T ONmin >200ns
LX Switch 'Off' time
L Δ I
T O FF = -----------------------------------------------------------------------
Note: T OFFmin >200ns
Where:
L is the coil inductance (H)
rL is the coil resistance ( Ω )
I avg is the required LED current (A)
DI is the coil peak-peak ripple current (A) {Internally set to 0.3 x I avg }
V IN is the supply voltage (V)
V LED is the total LED forward voltage (V)
R LX is the switch resistance ( Ω )
VD is the diode forward voltage at the required load current (V)
ZXLD1352
Document number: DS33469 Rev. 3 - 2
15 of 21
www.diodes.com
December 2010
? Diodes Incorporated
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相关代理商/技术参数 |
参数描述 |
|---|---|
| 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 |
| ZXLD1356_10 | 制造商:DIODES 制造商全称:Diodes Incorporated 功能描述:60V 550mA LED DRIVER with AEC-Q100 |
| ZXLD1356DACTC | 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 |
| 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 |
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