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Six-String WLED Driver with Integrated
Step-Up Converter
Pin Configuration
TOP VIEW
SW 16
I.C. 17
COMP 18
V IN 19
15
14
13
MAX17127
12
11
10
9
8
7
FB3
AGND
FB4
FB5
PWM 20
+
EP
6
FB6
1
2
3
4
5
THIN QFN
(4mm × 4mm)
Pin Description
PIN
1
2
3
4
5
6
NAME
V DDIO
EN
FSLCT
ISET
FPO
FB6
FUNCTION
5V Linear Regulator Output. V DDIO provides power to the MAX17127. Bypass V DDIO to AGND with
a ceramic capacitor of 1 F F or greater.
Enable Pin. EN = high enables the MAX17127. An internal 200k I (typ) pulldown resistor keeps the
MAX17127 in disabled mode if the EN pin is high impedance.
Oscillator Frequency-Adjustment Pin. The resistance from FSLCT to AGND sets the step-up
converter’s oscillator frequency:
f SW = 1MHz O 100k I /R FSLCT
The acceptable resistance range is 100k I < R FSLCT < 400k I , which corresponds to the switching
frequency of 1MHz > f SW > 250kHz.
Full-Scale LED Current-Adjustment Pin. The resistance from ISET to AGND controls the full-scale
current in each LED string:
I LEDMAX = 20mA O 180k I /R ISET
The acceptable resistance range is 120k I < R ISET < 360k I , which corresponds to a full-scale LED
current of 30mA > I LEDMAX > 10mA. Connecting ISET to AGND sets the test mode for 0.3mA (typ)
full-scale LED current.
Fault-Diagnostic Output. Open drain, active low. The FPO output is asserted low when the following
faults occur: overcurrent fault, thermal fault, output-voltage short condition, or output overvoltage.
LED String 6 Cathode Connection. FB6 is the open-drain output of an internal regulator, which
controls current through FB6. FB6 can sink up to 30mA. If unused, connect FB6 to AGND.
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相关代理商/技术参数
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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
MAX17129ETE+ 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
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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