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Low-Cost, 6-String WLED Drivers with
Quick-PWM Step-Up Converter
Pin Configuration
TOP VIEW
FB6 13
12
11
10
9
8
FB1
GND 14
ISET 15
MAX17129
MAX17149
7
6
OVP
PGND
EN 16
+
1
2
3
EP
4
5
LX
THIN QFN
3mm × 3mm
Pin Description
PIN
1
2
3
4
5
6
7
8
9
NAME
BRT
V CC
IN
FSEL
LX
PGND
OVP
FB1
FB2
FUNCTION
PWM Signal Input. This PWM signal controls the LED brightness by turning the LED current sources on
or off.
Internal LDO Output. V CC provides bias supply to the devices. V CC is generated by internal LDO.
Connect a minimum 1 F F capacitor from V CC to GND. All power outputs are disabled until V CC
exceeds its UVLO threshold. See the Input Supply Voltage Configuration and UVLO section for supply
configurations for the ICs.
Supply Input. Connect IN to the system input supply voltage and bypass IN to GND with a minimum
0.1 F F ceramic capacitor. The ICs are disabled if V IN falls below its UVLO threshold. The devices can
extend the operating range down to 3.0V if IN and V CC are tied together. See the Input Supply Voltage
Configuration and UVLO section.
Step-Up Converter Switching Frequency Selection Input. Connect to V CC with a 10kω resistor to set
500kHz, or connect to GND to set 1MHz.
Step-Up Regulator Switching Node. Connect inductor and output diode here and minimize trace area
for lowest EMI.
Power Ground
Boost Output Voltage-Sensing Input. This voltage is used for overvoltage protection.
Current-Balancer Output. LED string cathode connection. FB1 is the open-drain output of an internal
regulator, which controls current through FB1. FB1 can sink up to 45mA. If unused, connect FB1 to
GND or leave high impedance.
Current-Balancer Output. LED string cathode connection. FB2 is the open-drain output of an internal
regulator, which controls current through FB2. FB2 can sink up to 45mA. If unused, connect FB2 to
GND or leave high impedance.
9
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相关代理商/技术参数
MAX17149ETE+T
功能描述:LED照明驱动器 6 WLED Driver with Quick-PWM
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
MAX1714AEEP
功能描述:电流型 PWM 控制器 RoHS:否 制造商:Texas Instruments 开关频率:27 KHz 上升时间: 下降时间: 工作电源电压:6 V to 15 V 工作电源电流:1.5 mA 输出端数量:1 最大工作温度:+ 105 C 安装风格:SMD/SMT 封装 / 箱体:TSSOP-14
MAX1714AEEP+
功能描述:电流型 PWM 控制器 Step-Down Controller for Notebook RoHS:否 制造商:Texas Instruments 开关频率:27 KHz 上升时间: 下降时间: 工作电源电压:6 V to 15 V 工作电源电流:1.5 mA 输出端数量:1 最大工作温度:+ 105 C 安装风格:SMD/SMT 封装 / 箱体:TSSOP-14
MAX1714AEEP+T
功能描述:电流型 PWM 控制器 Step-Down Controller for Notebook RoHS:否 制造商:Texas Instruments 开关频率:27 KHz 上升时间: 下降时间: 工作电源电压:6 V to 15 V 工作电源电流:1.5 mA 输出端数量:1 最大工作温度:+ 105 C 安装风格:SMD/SMT 封装 / 箱体:TSSOP-14
MAX1714AEEP-T
功能描述:电流型 PWM 控制器 RoHS:否 制造商:Texas Instruments 开关频率:27 KHz 上升时间: 下降时间: 工作电源电压:6 V to 15 V 工作电源电流:1.5 mA 输出端数量:1 最大工作温度:+ 105 C 安装风格:SMD/SMT 封装 / 箱体:TSSOP-14
MAX1714AEEP-TG068
制造商:Rochester Electronics LLC 功能描述: 制造商:Maxim Integrated Products 功能描述:
MAX1714AEVKIT
功能描述:电流型 PWM 控制器 Evaluation Kit for the MAX1714A RoHS:否 制造商:Texas Instruments 开关频率:27 KHz 上升时间: 下降时间: 工作电源电压:6 V to 15 V 工作电源电流:1.5 mA 输出端数量:1 最大工作温度:+ 105 C 安装风格:SMD/SMT 封装 / 箱体:TSSOP-14
MAX1714BEEE
功能描述:电流型 PWM 控制器 RoHS:否 制造商:Texas Instruments 开关频率:27 KHz 上升时间: 下降时间: 工作电源电压:6 V to 15 V 工作电源电流:1.5 mA 输出端数量:1 最大工作温度:+ 105 C 安装风格:SMD/SMT 封装 / 箱体:TSSOP-14