Six-String WLED Driver with Integrated
Step-Up Converter
Typical Operating Characteristics (continued)
(Circuit of Figure 1. V IN = 12V, T A = +25 N C, unless otherwise noted.)
SWITCHING WAVEFORMS
(V S = 26V, BRIGHTNESS = 100%)
MAX17127 toc09
V OUT = 32V, I OUT = 120mA
1μs/div
STARTUP WAVEFORMS
(BRIGHTNESS = 20%)
V LX
20V/div
0V
INDUCTOR
CURRENT
200mA/div
0mA
STARTUP WAVEFORMS
(BRIGHTNESS = 100%)
MAX17127 toc10
12V
1ms/div
LED CURRENT WAVEFORMS
(BRIGHTNESS = 50%)
V EN
5V/div
0V
INDUCTOR
CURRENT
500mA/div
0A
V LX
20V/div
0V
V OUT
20V/div
0V
12V
MAX17127 toc11
V EN
5V/div
0V
INDUCTOR
CURRENT
500mA/div
0A
V LX
20V/div
0V
V OUT
20V/div
0V
MAX17127 toc12
V FB1
10V/div
0V
I LED
20mA/div
0mA
INDUCTOR
CURRENT
500mA/div
0mA
2ms/div
LED CURRENT WAVEFORMS
(BRIGHTNESS = 1%)
MAX17127 toc13
V FB1
10V/div
0V
I FB1
20mA/div
0mA
1ms/div
LED-OPEN FAULT PROTECTION
(BRIGHTNESS = 100%, LED OPEN ON FB1)
MAX17127 toc14
V FB1
1V/div
0V
V FB2
10V/div
0V
1ms/div
INDUCTOR
CURRENT
500mA/div
0mA
20mA
0mA
200ms/div
32V
V OUT
10V/div
10V
I FB2
10mA/div
_______________________________________________________________________________________
7
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相关代理商/技术参数
MAX17127ETP+T 功能描述:LED照明驱动器 Six String WLED Drvr w/Integrated MOSFET 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
MAX17127EVKIT+ 功能描述:电源管理IC开发工具 MAX17127 Eval Kit RoHS:否 制造商:Maxim Integrated 产品:Evaluation Kits 类型:Battery Management 工具用于评估:MAX17710GB 输入电压: 输出电压:1.8 V
MAX17129AETE+ 功能描述:LED照明驱动器 Six String WLED Drvr w/Integrated MOSFET 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
MAX17129AETE+T 功能描述:LED照明驱动器 Six String WLED Drvr w/Integrated MOSFET 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
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MAX17129ETE+T 功能描述:LED照明驱动器 Six String WLED Drvr w/Integrated MOSFET 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
MAX17129EVKIT+ 功能描述:电源管理IC开发工具 MAX17129 Eval Kit RoHS:否 制造商:Maxim Integrated 产品:Evaluation Kits 类型:Battery Management 工具用于评估:MAX17710GB 输入电压: 输出电压:1.8 V
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