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TPS61150A

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采用单电感器的双输出升压 WLED 驱动器

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TPS61150A

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产品详情

Number of channels 2 Vin (min) (V) 2.5 Vin (max) (V) 6 Vout (min) (V) 2.5 Vout (max) (V) 27 Type Inductive Switching frequency (max) (kHz) 1200 Duty cycle (max) (%) 93 LED current per channel (mA) 23 Peak efficiency (%) 83 Topology Boost Features Synchronous Rectification Operating temperature range (°C) -40 to 85 Rating Catalog
Number of channels 2 Vin (min) (V) 2.5 Vin (max) (V) 6 Vout (min) (V) 2.5 Vout (max) (V) 27 Type Inductive Switching frequency (max) (kHz) 1200 Duty cycle (max) (%) 93 LED current per channel (mA) 23 Peak efficiency (%) 83 Topology Boost Features Synchronous Rectification Operating temperature range (°C) -40 to 85 Rating Catalog
VSON (DRC) 10 9 mm² 3 x 3
  • 2.5V to 6V Input Voltage Range
  • 0.7A Integrated Switch
  • Built-in Power Diode
  • 1.2MHz Fixed PWM Frequency
  • Individually Programmable Output Current
  • Input-to-Output Isolation
  • Built-in Soft Start
  • 27V Overvoltage Protection
  • 3% at 15mA Matching between Two Current Strings, Improvement from TPS61150/1
  • Up to 83% Efficiency
  • Up to 30kHz PWM Dimming Frequency
  • Availiable in a 10 Pin, 3 × 3 mm QFN Package
  • APPLICATIONS
    • Up to 14 WLED Driver for Media Form Factor Display
    • Sub and Main Display Backlight in Clam Shell Phones
    • Display and Keypad Backlight in Portable Equipment
  • 2.5V to 6V Input Voltage Range
  • 0.7A Integrated Switch
  • Built-in Power Diode
  • 1.2MHz Fixed PWM Frequency
  • Individually Programmable Output Current
  • Input-to-Output Isolation
  • Built-in Soft Start
  • 27V Overvoltage Protection
  • 3% at 15mA Matching between Two Current Strings, Improvement from TPS61150/1
  • Up to 83% Efficiency
  • Up to 30kHz PWM Dimming Frequency
  • Availiable in a 10 Pin, 3 × 3 mm QFN Package
  • APPLICATIONS
    • Up to 14 WLED Driver for Media Form Factor Display
    • Sub and Main Display Backlight in Clam Shell Phones
    • Display and Keypad Backlight in Portable Equipment

The TPS61150A is a high frequency boost converter with two regulated current outputs for driving WLEDs. Each current output can be individually programmed through external resistors. There is dedicated selection pin for each output, so the two outputs can be turned on separately or simultaneously. The output current can be reduced by a pulse width modulation (PWM) signal on the select pins or an analog voltage on the ISET pin. The boost regulator runs at 1.2MHz fixed switching frequency to reduce output ripple and avoid audible noises associated with PFM control.

The two current outputs are ideal for driving WLED backlight for the sub and main displays in clam shell phones. The two outputs can also be used for driving display and keypad backlights. When used together, the two outputs can drive up to 14 WLED for one large display.

In addition to the small inductor, small capacitor and 3mm x 3mm QFN package, the built-in MOSFET and diode eliminate the need for any external power devices. Overall, the IC provides an extremely compact solution with high efficiency and plenty of flexibility.

The TPS61150A is a high frequency boost converter with two regulated current outputs for driving WLEDs. Each current output can be individually programmed through external resistors. There is dedicated selection pin for each output, so the two outputs can be turned on separately or simultaneously. The output current can be reduced by a pulse width modulation (PWM) signal on the select pins or an analog voltage on the ISET pin. The boost regulator runs at 1.2MHz fixed switching frequency to reduce output ripple and avoid audible noises associated with PFM control.

The two current outputs are ideal for driving WLED backlight for the sub and main displays in clam shell phones. The two outputs can also be used for driving display and keypad backlights. When used together, the two outputs can drive up to 14 WLED for one large display.

In addition to the small inductor, small capacitor and 3mm x 3mm QFN package, the built-in MOSFET and diode eliminate the need for any external power devices. Overall, the IC provides an extremely compact solution with high efficiency and plenty of flexibility.

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技术文档

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类型 标题 下载最新的英语版本 日期
* 数据表 Dual Output Boost WLED Driver Using Single Inductor 数据表 2006年 10月 6日
白皮书 常见 LED 功能和 LED 驱动器设计注意事项 英语版 2020年 9月 21日
应用手册 Performing Accurate PFM Mode Efficiency Measurements (Rev. A) 2018年 12月 11日
选择指南 电源管理指南 2018 (Rev. K) 2018年 7月 31日
选择指南 电源管理指南 2018 (Rev. R) 2018年 6月 25日
应用手册 Extending the Soft Start Time Without a Soft Start Pin (Rev. B) 2017年 6月 15日
模拟设计期刊 IQ：它是什么、不是什么以及如何使用 英语版 2011年 8月 17日
应用手册 最小化升压转换器开关节点处的振铃 英语版 2008年 7月 15日
EVM 用户指南 TPS61150EVM-150 (Rev. A) 2006年 10月 26日

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光绘文件

TPS6115xVM Gerber Files

SLVC137.ZIP (102 KB)
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