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DC/DC 轉換器

TPS62750

現行

具可編程輸入電流限制的 2.25MHz 降壓轉換器，適用 USB 供電應用

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產品規格表

TPS62750

現行
產品規格表 立即訂購

產品詳細資料

Rating Catalog Topology Buck Iout (max) (A) 1.3 Vin (max) (V) 6 Vin (min) (V) 2.9 Vout (max) (V) 5.1 Vout (min) (V) 0.8 Features Adjustable current limit, Enable, Light load efficiency, Output discharge, Synchronous Rectification Control mode Voltage mode Operating temperature range (°C) -40 to 85 Iq (typ) (A) 0.00078 Duty cycle (max) (%) 100
Rating Catalog Topology Buck Iout (max) (A) 1.3 Vin (max) (V) 6 Vin (min) (V) 2.9 Vout (max) (V) 5.1 Vout (min) (V) 0.8 Features Adjustable current limit, Enable, Light load efficiency, Output discharge, Synchronous Rectification Control mode Voltage mode Operating temperature range (°C) -40 to 85 Iq (typ) (A) 0.00078 Duty cycle (max) (%) 100
WSON (DSK) 10 6.25 mm² (2.5 mm × 2.5 mm)
  • Efficiency > 90% at Nominal Operating Conditions
  • Programmable Average Input Current Limits for USB Applications
    • 50mA to 300mA for Low Current Limit Range
    • 300mA to 1.3A for High Current Limit Range ±10% Current Accuracy
  • Stable Output Voltage for Load Transients to Minimize Overshoot at Load Step Response
  • Hot Plug and Reverse Current Protection
  • Automatic PFM/PWM Mode transition (TPS62750)
  • Forced PWM for Noise Sensitive Applications (TPS62751)
  • VIN Range From 2.9V to 6V
  • Adjustable VOUT From 0.8V to 0.85×VIN
  • Softstart for Inrush Current Prevention
  • 2.25 MHz Fixed Frequency Operation
  • Short Cicruit and Thermal Shutdown Protection
  • Available in a 2.5 × 2.5 10 pin SON Package
  • APPLICATIONS
    • USB Wireless Modems
    • Portable USB peripherals
    • Handheld Computers
  • Efficiency > 90% at Nominal Operating Conditions
  • Programmable Average Input Current Limits for USB Applications
    • 50mA to 300mA for Low Current Limit Range
    • 300mA to 1.3A for High Current Limit Range ±10% Current Accuracy
  • Stable Output Voltage for Load Transients to Minimize Overshoot at Load Step Response
  • Hot Plug and Reverse Current Protection
  • Automatic PFM/PWM Mode transition (TPS62750)
  • Forced PWM for Noise Sensitive Applications (TPS62751)
  • VIN Range From 2.9V to 6V
  • Adjustable VOUT From 0.8V to 0.85×VIN
  • Softstart for Inrush Current Prevention
  • 2.25 MHz Fixed Frequency Operation
  • Short Cicruit and Thermal Shutdown Protection
  • Available in a 2.5 × 2.5 10 pin SON Package
  • APPLICATIONS
    • USB Wireless Modems
    • Portable USB peripherals
    • Handheld Computers

The TPS6275x device is a highly efficient synchronous step down dc-dc converter optimized for USB powered portable applications. It can provide up to 1300mA average input current and is ideal for applications connected to a USB host.

With an input voltage range of 2.9 V to 6.0V, the device supports batteries with extended voltage range and is ideal for powering USB applications where USB compliance is required.

The TPS62750 operates at 2.25-MHz fixed switching frequency and enters Power Save Mode operation at light load currents to maintain high efficiency over the entire load current range. The TPS62751 operates in Forced PWM mode allowing use in applications that are noise sensitive. An output discharge allows the load to discharge in shutdown.

The 10% accurate average input current limit can be programmed with an external resistor, allowing use in applications such as USB, where the current drawn from the bus must be limited to 500mA.

The TPS6275x allows the use of small inductors and capacitors to achieve a small solution size. The TPS6275x is available in a 2,5mm × 2,5mm 10-pin SON package.

The TPS6275x device is a highly efficient synchronous step down dc-dc converter optimized for USB powered portable applications. It can provide up to 1300mA average input current and is ideal for applications connected to a USB host.

With an input voltage range of 2.9 V to 6.0V, the device supports batteries with extended voltage range and is ideal for powering USB applications where USB compliance is required.

The TPS62750 operates at 2.25-MHz fixed switching frequency and enters Power Save Mode operation at light load currents to maintain high efficiency over the entire load current range. The TPS62751 operates in Forced PWM mode allowing use in applications that are noise sensitive. An output discharge allows the load to discharge in shutdown.

The 10% accurate average input current limit can be programmed with an external resistor, allowing use in applications such as USB, where the current drawn from the bus must be limited to 500mA.

The TPS6275x allows the use of small inductors and capacitors to achieve a small solution size. The TPS6275x is available in a 2,5mm × 2,5mm 10-pin SON package.
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技術文件

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重要文件 類型 標題 格式選項 下載最新的英文版本 日期
* 資料表 High Efficiency Step-Down Converter for USB Applications datasheet (Rev. A) 2009/9/24
應用說明 QFN and SON PCB Attachment (Rev. C) PDF | HTML 2023/12/6
應用說明 Calculating Efficiency (Rev. A) 2020/3/6
類比設計期刊 Methods of output-voltage adjustment for DC/DC converters 2019/6/14
應用說明 Performing Accurate PFM Mode Efficiency Measurements (Rev. A) 2018/12/11
選擇指南 Power Management Guide 2018 (Rev. R) 2018/6/25
類比設計期刊 Understanding 100% mode in low-power DC/DC converters 2018/6/22
類比設計期刊 Achieving a clean startup by using a DC/DC converter with a precise enable-pin threshold 2017/10/24
類比設計期刊 Testing tips for applying external power to supply outputs without an input voltage 2016/10/24
應用說明 Basic Calculation of a Buck Converter's Power Stage (Rev. B) PDF | HTML 2015/8/17
類比設計期刊 Five steps to a great PCB layout for a step-down converter 2015/1/29
類比設計期刊 Design considerations for a resistive feedback divider in a DC/DC converter 2012/4/26
應用說明 Understanding the Absolute Maximum Ratings of the SW Node (Rev. A) 2012/1/13
類比設計期刊 IQ: What it is, what it isn’t, and how to use it 2011/6/17
使用指南 TPS62750EVM-413 2009/8/17

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