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TPS60255

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用于 LED 背光的 7 通道 175mA 高效电荷泵

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TPS60255

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产品详情

Number of channels 7 Vin (min) (V) 2.7 Vin (max) (V) 6 Vout (min) (V) 2.7 Vout (max) (V) 6.5 Type Capacitive Switching frequency (max) (kHz) 875 Duty cycle (max) (%) 100 LED current per channel (mA) 25 Peak efficiency (%) 93 Topology Boost Features Analog Dimming, EasyScale 1-Wire Interface, Enable/Shutdown, Fault Detection, Integrated Switch, Load Disconnect During Shutdown, OVP, Soft Start, Synchronous Rectification Operating temperature range (°C) -40 to 85 Rating Catalog
Number of channels 7 Vin (min) (V) 2.7 Vin (max) (V) 6 Vout (min) (V) 2.7 Vout (max) (V) 6.5 Type Capacitive Switching frequency (max) (kHz) 875 Duty cycle (max) (%) 100 LED current per channel (mA) 25 Peak efficiency (%) 93 Topology Boost Features Analog Dimming, EasyScale 1-Wire Interface, Enable/Shutdown, Fault Detection, Integrated Switch, Load Disconnect During Shutdown, OVP, Soft Start, Synchronous Rectification Operating temperature range (°C) -40 to 85 Rating Catalog
WQFN (RTE) 16 9 mm² 3 x 3
  • 2.7 V to 6.0 V Input Voltage Range
  • 1× and 1.5× Charge Pump
  • Auto Switching Between 1× and 1.5× Modes
  • 750 kHz Charge Pump Frequency
  • Seven Individually-regulated WLED Current Sinks
  • Single- Wire Interface for Dimming and ON/OFF Control
  • 25 mA max LED Current for Six Current Sinks
  • One 80 mA Current Sink
  • Open WLED Detection
  • Built-in Soft Start and Current Limit
  • 16-pin, 3 mm × 3 mm QFN Package
  • APPLICATIONS
    • Cellular Phones
    • Portable Navigation Displays
    • Multi-display Handheld Devices
  • 2.7 V to 6.0 V Input Voltage Range
  • 1× and 1.5× Charge Pump
  • Auto Switching Between 1× and 1.5× Modes
  • 750 kHz Charge Pump Frequency
  • Seven Individually-regulated WLED Current Sinks
  • Single- Wire Interface for Dimming and ON/OFF Control
  • 25 mA max LED Current for Six Current Sinks
  • One 80 mA Current Sink
  • Open WLED Detection
  • Built-in Soft Start and Current Limit
  • 16-pin, 3 mm × 3 mm QFN Package
  • APPLICATIONS
    • Cellular Phones
    • Portable Navigation Displays
    • Multi-display Handheld Devices

The TPS60255 is a high-efficiency, constant frequency charge pump DC/DC converter that uses 1× and 1.5× conversion to maximize efficiency for the input voltage range. By using adaptive 1×/1.5× charge-pump modes and very low dropout current regulators, the TPS60255 achieves high efficiency for the entire one-cell lithium battery range. The protection features include soft start, over-current limit, thermal shut down, and over-voltage detection. The device automatically detects and removes unused current sinks from the control loop.

This device drives six 25 mA current sinks and one 80 mA current sink. These current regulators are programmed by three independent brightness registers and five ON/OFF bits using a single-wire interface (EasyScale™). This offers flexible applications for a variety of lighting control in portable devices.

The TPS60255 is a high-efficiency, constant frequency charge pump DC/DC converter that uses 1× and 1.5× conversion to maximize efficiency for the input voltage range. By using adaptive 1×/1.5× charge-pump modes and very low dropout current regulators, the TPS60255 achieves high efficiency for the entire one-cell lithium battery range. The protection features include soft start, over-current limit, thermal shut down, and over-voltage detection. The device automatically detects and removes unused current sinks from the control loop.

This device drives six 25 mA current sinks and one 80 mA current sink. These current regulators are programmed by three independent brightness registers and five ON/OFF bits using a single-wire interface (EasyScale™). This offers flexible applications for a variety of lighting control in portable devices.
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类型 标题 下载最新的英语版本 日期
* 数据表 HIGH EFFICIENCY CHARGE PUMP FOR 7 WLEDs DRIVER WITH 1 WIRE INTERFACE 数据表 2008年 3月 24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
EVM 用户指南 TPS60255EVM-262 2008年 3月 3日

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包含信息：
  • RoHS
  • REACH
  • 器件标识
  • 引脚镀层/焊球材料
  • MSL 等级/回流焊峰值温度
  • MTBF/时基故障估算
  • 材料成分
  • 鉴定摘要
  • 持续可靠性监测
包含信息：
  • 制造厂地点
  • 封装厂地点

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