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TPS62355

正在供貨

具有 I2C 用于動(dòng)態(tài)電壓調(diào)節(jié)的 1A、3MHz 降壓轉(zhuǎn)換器

可提供此產(chǎn)品的更新版本

功能與比較器件相同，但引腳排列有所不同
TPS62861 正在供貨 具有 I2C/VSEL 接口的 1.75V 至 5.5V 輸入、1A 超低 IQ 降壓轉(zhuǎn)換器 Lower Iq of 2.3 uA, smaller solution size and broader output voltage range (0.4 V to 1.98 V)

產(chǎn)品詳情

Rating Catalog Topology Buck Iout (max) (A) 0.8 Vin (max) (V) 5.5 Vin (min) (V) 2.7 Vout (max) (V) 1.5375 Vout (min) (V) 0.75 Features Adaptive/Dynamic Voltage Scaling, Enable, Frequency synchronization, I2C/PMBus, Light Load Efficiency, Light load efficiency, Output discharge, Synchronous Rectification Control mode Voltage mode Operating temperature range (°C) -40 to 85 Iq (typ) (A) 0.000028 Duty cycle (max) (%) 80
Rating Catalog Topology Buck Iout (max) (A) 0.8 Vin (max) (V) 5.5 Vin (min) (V) 2.7 Vout (max) (V) 1.5375 Vout (min) (V) 0.75 Features Adaptive/Dynamic Voltage Scaling, Enable, Frequency synchronization, I2C/PMBus, Light Load Efficiency, Light load efficiency, Output discharge, Synchronous Rectification Control mode Voltage mode Operating temperature range (°C) -40 to 85 Iq (typ) (A) 0.000028 Duty cycle (max) (%) 80
VSON (DRC) 10 9 mm2 3 x 3
  • 88% Efficiency at 3-MHz Operation
  • 800-mA Output Current at VI = 2.7 V
  • 3-MHz Fixed Frequency Operation
  • Best in Class Load and Line Transient
  • Complete 1-mm Component Profile Solution
  • ±2% PWM DC Voltage Accuracy
  • 35-ns Minimum On-Time
  • Efficiency Optimized Power-Save Mode (Light PFM)
  • Transient Optimized Power-Save Mode (Fast PFM)
  • 28-μA Typical Quiescent Current
  • I2C Compatible Interface up to 3.4 Mbps
  • Pin-Selectable Output Voltage
  • Synchronizable On the Fly to External Clock Signal
  • Available in a 10-Pin QFN (3 × 3 mm) and 12-Pin NanoFree? (CSP) Packaging
  • APPLICATIONS
    • SmartReflex? Compliant Power Supply
    • Split Supply DSPs and μP Solutions
      OMAP?, XSCALE?
    • Cell Phones, Smart-Phones
    • PDAs, Pocket PCs
    • Digital Cameras
    • Micro DC-DC Converter Modules

NanoFree, SmartReflex, OMAP, PowerPAD Is a trademark of Texas Instruments.
XSCALE is a trademark of Intel Corporation.
I2C is a trademark of Philips Corporation.
  • 88% Efficiency at 3-MHz Operation
  • 800-mA Output Current at VI = 2.7 V
  • 3-MHz Fixed Frequency Operation
  • Best in Class Load and Line Transient
  • Complete 1-mm Component Profile Solution
  • ±2% PWM DC Voltage Accuracy
  • 35-ns Minimum On-Time
  • Efficiency Optimized Power-Save Mode (Light PFM)
  • Transient Optimized Power-Save Mode (Fast PFM)
  • 28-μA Typical Quiescent Current
  • I2C Compatible Interface up to 3.4 Mbps
  • Pin-Selectable Output Voltage
  • Synchronizable On the Fly to External Clock Signal
  • Available in a 10-Pin QFN (3 × 3 mm) and 12-Pin NanoFree? (CSP) Packaging
  • APPLICATIONS
    • SmartReflex? Compliant Power Supply
    • Split Supply DSPs and μP Solutions
      OMAP?, XSCALE?
    • Cell Phones, Smart-Phones
    • PDAs, Pocket PCs
    • Digital Cameras
    • Micro DC-DC Converter Modules

NanoFree, SmartReflex, OMAP, PowerPAD Is a trademark of Texas Instruments.
XSCALE is a trademark of Intel Corporation.
I2C is a trademark of Philips Corporation.

The TPS6235x device is a high-frequency synchronous step-down dc-dc converter optimized for battery-powered portable applications. Intended for low-power applications, the TPS6235x supports up to 800-mA load current and allows the use of small, low cost inductors and capacitors.

The device is ideal for mobile phones and similar portable applications powered by a single-cell Li-Ion battery. With an output voltage range adjustable via I2C interface down to 0.6 V, the device supports low-voltage DSPs and processors core power supplies in smart-phones, PDAs, and handheld computers.

The TPS6235x operates at 3-MHz fixed switching frequency and enters the efficiency optimized power-save mode operation at light load currents to maintain high efficiency over the entire load current range. In the shutdown mode, the current consumption is reduced to less than 2 µA.

The serial interface is compatible with Fast/Standard and High-Speed mode I2C specification allowing transfers at up to 3.4 Mbps. This communication interface is used for dynamic voltage scaling with voltage steps down to 12.5 mV, for reprogramming the mode of operation (Light PFM, Fast PFM or Forced PWM) or disable/enabling the output voltage.

The TPS6235x device is a high-frequency synchronous step-down dc-dc converter optimized for battery-powered portable applications. Intended for low-power applications, the TPS6235x supports up to 800-mA load current and allows the use of small, low cost inductors and capacitors.

The device is ideal for mobile phones and similar portable applications powered by a single-cell Li-Ion battery. With an output voltage range adjustable via I2C interface down to 0.6 V, the device supports low-voltage DSPs and processors core power supplies in smart-phones, PDAs, and handheld computers.

The TPS6235x operates at 3-MHz fixed switching frequency and enters the efficiency optimized power-save mode operation at light load currents to maintain high efficiency over the entire load current range. In the shutdown mode, the current consumption is reduced to less than 2 µA.

The serial interface is compatible with Fast/Standard and High-Speed mode I2C specification allowing transfers at up to 3.4 Mbps. This communication interface is used for dynamic voltage scaling with voltage steps down to 12.5 mV, for reprogramming the mode of operation (Light PFM, Fast PFM or Forced PWM) or disable/enabling the output voltage.
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頂層文檔 類型 標(biāo)題 格式選項(xiàng) 下載最新的英語(yǔ)版本 日期
* 數(shù)據(jù)表 800-mA 3-MHz Synchronous Step-Down Converter With I2C(TM) Compatible Interface 數(shù)據(jù)表 (Rev. E) 2008年 4月 15日
應(yīng)用手冊(cè) QFN 和 SON PCB 連接 (Rev. C) PDF | HTML 英語(yǔ)版 (Rev.C) PDF | HTML 2024年 1月 5日
模擬設(shè)計(jì)期刊 Methods of output-voltage adjustment for DC/DC converters 2019年 6月 14日
應(yīng)用手冊(cè) Performing Accurate PFM Mode Efficiency Measurements (Rev. A) 2018年 12月 11日
模擬設(shè)計(jì)期刊 Understanding 100% mode in low-power DC/DC converters 2018年 6月 22日
應(yīng)用手冊(cè) Optimizing Transient Response of Internally Compensated DC-DC Converters (Rev. B) 2017年 11月 29日
模擬設(shè)計(jì)期刊 Achieving a clean startup by using a DC/DC converter with a precise enable-pin threshold 2017年 10月 24日
模擬設(shè)計(jì)期刊 Testing tips for applying external power to supply outputs without an input voltage 2016年 10月 24日
應(yīng)用手冊(cè) Basic Calculation of a Buck Converter's Power Stage (Rev. B) 2015年 8月 17日
模擬設(shè)計(jì)期刊 實(shí)現(xiàn)降壓型轉(zhuǎn)換器出色 PCB 布局的五個(gè)步驟 英語(yǔ)版 2015年 5月 1日
應(yīng)用手冊(cè) Understanding the Absolute Maximum Ratings of the SW Node (Rev. A) 2012年 1月 13日
模擬設(shè)計(jì)期刊 IQ：它是什么、不是什么以及如何使用 英語(yǔ)版 2011年 8月 17日
應(yīng)用手冊(cè) 優(yōu)化具有內(nèi)部補(bǔ)償功能的 DC-DC 轉(zhuǎn)換器的瞬態(tài)響應(yīng) 最新英語(yǔ)版本 (Rev.B) 2008年 7月 15日

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