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AC/DC 和 DC/DC 轉換器 (整合式 FET)

TPS62321

現行

採用 QFN 或晶片級的 1.5V、500-mA、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
TPS62807 現行 採用 0.7mm x 1.05mm WCSP 的 1.75V 至 5.5V 輸入、600mA 超低 IQ 降壓轉換器 Smaller solution size and lower quiescent current

TPS62321

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) 0.5 Vin (min) (V) 2.7 Vin (max) (V) 6 Switching frequency (min) (kHz) 2650 Switching frequency (max) (kHz) 3350 Features Enable, Forced PWM, Frequency synchronization, Light Load Efficiency, Light load efficiency, Output discharge, Synchronous Rectification Control mode Voltage mode Vout (min) (V) 1.5 Vout (max) (V) 1.5 Iq (typ) (µA) 86 Duty cycle (max) (%) 100
Rating Catalog Operating temperature range (°C) -40 to 85 Topology Buck Type Converter Iout (max) (A) 0.5 Vin (min) (V) 2.7 Vin (max) (V) 6 Switching frequency (min) (kHz) 2650 Switching frequency (max) (kHz) 3350 Features Enable, Forced PWM, Frequency synchronization, Light Load Efficiency, Light load efficiency, Output discharge, Synchronous Rectification Control mode Voltage mode Vout (min) (V) 1.5 Vout (max) (V) 1.5 Iq (typ) (µA) 86 Duty cycle (max) (%) 100
VSON (DRC) 10 9 mm² 3 x 3
  • Up to 93% Efficiency at 3-MHz Operation
  • Up to 500-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
  • –0.5%/+1.3% PWM DC Voltage Accuracy Over Temperature
  • 35-ns Minimum On-Time
  • Power-Save Mode Operation at Light Load Currents
  • Fixed and Adjustable Output Voltage
  • Only 86-µA Quiescent Current
  • 100% Duty Cycle for Lowest Dropout
  • Synchronizable On the Fly to External
    Clock Signal
  • Integrated Active Power-Down Sequencing (TPS6232x only)
  • Available in a 10-Pin QFN (3 × 3 mm), 8-Pin NanoFree™, and NanoStar™ (CSP) Packaging
  • APPLICATIONS
    • Cell Phones, Smart-Phones
    • WLAN and Bluetooth™ Applications
    • Micro DC-DC Converter Modules
    • PDAs, Pocket PCs
    • USB-Based DSL Modems
    • Digital Cameras

NanoFree, NanoStar, TMS320 are trademarks of Texas Instruments.
Bluetooth is a trademark of Bluetooth SIG, Inc.
PowerPAD is a trademark of Texas Instruments.
  • Up to 93% Efficiency at 3-MHz Operation
  • Up to 500-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
  • –0.5%/+1.3% PWM DC Voltage Accuracy Over Temperature
  • 35-ns Minimum On-Time
  • Power-Save Mode Operation at Light Load Currents
  • Fixed and Adjustable Output Voltage
  • Only 86-µA Quiescent Current
  • 100% Duty Cycle for Lowest Dropout
  • Synchronizable On the Fly to External
    Clock Signal
  • Integrated Active Power-Down Sequencing (TPS6232x only)
  • Available in a 10-Pin QFN (3 × 3 mm), 8-Pin NanoFree™, and NanoStar™ (CSP) Packaging
  • APPLICATIONS
    • Cell Phones, Smart-Phones
    • WLAN and Bluetooth™ Applications
    • Micro DC-DC Converter Modules
    • PDAs, Pocket PCs
    • USB-Based DSL Modems
    • Digital Cameras

NanoFree, NanoStar, TMS320 are trademarks of Texas Instruments.
Bluetooth is a trademark of Bluetooth SIG, Inc.
PowerPAD is a trademark of Texas Instruments.

The TPS623xx device is a high-frequency synchronous step-down dc-dc converter optimized for battery-powered portable applications. Intended for low-power applications, the TPS623xx supports up to 500-mA load current and allows the use of tiny, low cost chip inductor and capacitors.

The device is ideal for mobile phones and similar portable applications powered by a single-cell Li-Ion battery or by 3-cell NiMH/NiCd batteries. With an output voltage range from 5.4 V down to 0.6 V, the device supports the low-voltage TMS320 DSP family, processors in smart-phones, PDAs as well as notebooks, and handheld computers.

The TPS62300 operates at 3-MHz fixed switching frequency and enters the power-save mode operation at light load currents to maintain high efficiency over the entire load current range. For low noise applications, the device can be forced into fixed frequency PWM mode by pulling the MODE/SYNC pin high. The device can also be synchronized to an external clock signal in the range of 3 MHz. In the shutdown mode, the current consumption is reduced to less than 1 µA.

The TPS623xx is available in a 10-pin leadless package (3 × 3 mm QFN) and an 8-pin chip-scale package (CSP).

The TPS623xx device is a high-frequency synchronous step-down dc-dc converter optimized for battery-powered portable applications. Intended for low-power applications, the TPS623xx supports up to 500-mA load current and allows the use of tiny, low cost chip inductor and capacitors.

The device is ideal for mobile phones and similar portable applications powered by a single-cell Li-Ion battery or by 3-cell NiMH/NiCd batteries. With an output voltage range from 5.4 V down to 0.6 V, the device supports the low-voltage TMS320 DSP family, processors in smart-phones, PDAs as well as notebooks, and handheld computers.

The TPS62300 operates at 3-MHz fixed switching frequency and enters the power-save mode operation at light load currents to maintain high efficiency over the entire load current range. For low noise applications, the device can be forced into fixed frequency PWM mode by pulling the MODE/SYNC pin high. The device can also be synchronized to an external clock signal in the range of 3 MHz. In the shutdown mode, the current consumption is reduced to less than 1 µA.

The TPS623xx is available in a 10-pin leadless package (3 × 3 mm QFN) and an 8-pin chip-scale package (CSP).
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技術文件

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類型 標題 日期
* Data sheet 500mA, 3MHz Synchronous Step-Down Converter in Chip Scale Packaging datasheet (Rev. E) 2007年 11月 12日
Application note QFN and SON PCB Attachment (Rev. C) PDF | HTML 2023年 12月 6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
Application note Extending the Soft Start Time Without a Soft Start Pin (Rev. B) 2017年 6月 15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

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