首頁 電源管理 AC/DC 和 DC/DC 轉換器 (整合式 FET)
首頁
電源管理
AC/DC 和 DC/DC 轉換器 (整合式 FET)

TPS62354

現行

具有 I2C 用於動態電壓調節的 1A、3-MHz 降壓轉換器

立即訂購
產品規格表

現在提供此產品的更新版本

open-in-new 比較替代產品
功能相同，但引腳輸出與所比較的裝置不同
TPS62861 現行 具有 I2C/VSEL 介面的 1.75 V 至 5.5 V 輸入、1 A 超低 IQ 降壓轉換器 Smaller solution size and lower quiescent current

TPS62354

現行
產品規格表 立即訂購

產品詳細資料

Rating Catalog Operating temperature range (°C) -40 to 85 Topology Buck Type Converter Iout (max) (A) 0.8 Vin (min) (V) 2.7 Vin (max) (V) 5.5 Switching frequency (min) (kHz) 2650 Switching frequency (max) (kHz) 3350 Features Adaptive/Dynamic Voltage Scaling, Enable, Frequency synchronization, I2C/PMBus, Light Load Efficiency, Light load efficiency, Output discharge, Synchronous Rectification Control mode Voltage mode Vout (min) (V) 0.75 Vout (max) (V) 1.5375 Iq (typ) (µA) 28 Duty cycle (max) (%) 80
Rating Catalog Operating temperature range (°C) -40 to 85 Topology Buck Type Converter Iout (max) (A) 0.8 Vin (min) (V) 2.7 Vin (max) (V) 5.5 Switching frequency (min) (kHz) 2650 Switching frequency (max) (kHz) 3350 Features Adaptive/Dynamic Voltage Scaling, Enable, Frequency synchronization, I2C/PMBus, Light Load Efficiency, Light load efficiency, Output discharge, Synchronous Rectification Control mode Voltage mode Vout (min) (V) 0.75 Vout (max) (V) 1.5375 Iq (typ) (µA) 28 Duty cycle (max) (%) 80
DSBGA (YZG) 12 3.9375 mm² 2.25 x 1.75
  • 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.
filter 尋找其它 AC/DC 和 DC/DC 轉換器 (整合式 FET)
下載 觀看有字幕稿的影片 影片

技術文件

star =TI 所選的此產品重要文件
找不到結果。請清除您的搜尋條件，然後再試一次。
檢視所有 11
類型 標題 日期
* Data sheet 800-mA 3-MHz Synchronous Step-Down Converter With I2C(TM) Compatible Interface datasheet (Rev. E) 2008年 4月 15日
Analog Design Journal Methods of output-voltage adjustment for DC/DC converters 2019年 6月 14日
Application note Performing Accurate PFM Mode Efficiency Measurements (Rev. A) 2018年 12月 11日
Analog Design Journal Understanding 100% mode in low-power DC/DC converters 2018年 6月 22日
Application note Optimizing Transient Response of Internally Compensated DC-DC Converters (Rev. B) 2017年 11月 29日
Analog Design Journal Achieving a clean startup by using a DC/DC converter with a precise enable-pin threshold 2017年 10月 24日
Analog Design Journal Testing tips for applying external power to supply outputs without an input voltage 2016年 10月 24日
Application note Basic Calculation of a Buck Converter's Power Stage (Rev. B) 2015年 8月 17日
Analog Design Journal Five steps to a great PCB layout for a step-down converter 2015年 1月 29日
Application note Understanding the Absolute Maximum Ratings of the SW Node (Rev. A) 2012年 1月 13日
Analog Design Journal IQ: What it is, what it isn’t, and how to use it 2011年 6月 17日

設計與開發

如需其他條款或必要資源，請按一下下方的任何標題以檢視詳細頁面 (如有)。

封裝 針腳 CAD 符號、佔位空間與 3D 模型
DSBGA (YZG) 12 Ultra Librarian
適用 TI 的評估品項標準條款與條件。

訂購與品質

內含資訊：
  • RoHS
  • REACH
  • 產品標記
  • 鉛塗層/球物料
  • MSL 等級/回焊峰值
  • MTBF/FIT 估算值
  • 材料內容
  • 認證摘要
  • 進行中持續性的可靠性監測
內含資訊：
  • 晶圓廠位置
  • 組裝地點

支援與培訓

內含 TI 工程師技術支援的 TI E2E™ 論壇

以英文檢視所有論壇主題

內容係由 TI 和社群貢獻者依「現狀」提供，且不構成 TI 規範。檢視使用條款。

若有關於品質、封裝或訂購 TI 產品的問題，請參閱 TI 支援。​​​​​​​​​​​​​​

影片