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AC/DC & DC/DC converters (integrated FET)

TPS62840

現行

60-nA 靜態電流 (IQ)、1.8V 至 6.5VIN、高效 750mA 降壓轉換器

立即訂購
產品規格表

TPS62840

現行
產品規格表 立即訂購

產品詳細資料

Iout (max) (A) 0.75 Vin (min) (V) 1.8 Vin (max) (V) 6.5 Topology Buck Type Converter Switching frequency (min) (kHz) 1800 Switching frequency (max) (kHz) 1800 Features Enable, Fixed Output, Forced PWM, Light Load Efficiency, Light load efficiency, Output discharge, Over Current Protection, Soft Start Fixed, Synchronous Rectification, UVLO Fixed, UVLO fixed Control mode DCS-Control Vout (min) (V) 0.8, 1.8, 3.4 Vout (max) (V) 1.55, 3.3, 3.4, 3.6 Rating Catalog Operating temperature range (°C) -40 to 125 Iq (typ) (A) 0.00000006
Iout (max) (A) 0.75 Vin (min) (V) 1.8 Vin (max) (V) 6.5 Topology Buck Type Converter Switching frequency (min) (kHz) 1800 Switching frequency (max) (kHz) 1800 Features Enable, Fixed Output, Forced PWM, Light Load Efficiency, Light load efficiency, Output discharge, Over Current Protection, Soft Start Fixed, Synchronous Rectification, UVLO Fixed, UVLO fixed Control mode DCS-Control Vout (min) (V) 0.8, 1.8, 3.4 Vout (max) (V) 1.55, 3.3, 3.4, 3.6 Rating Catalog Operating temperature range (°C) -40 to 125 Iq (typ) (A) 0.00000006
DSBGA (YBG) 6 1.4136 mm² 0.95 x 1.488 HVSSOP (DGR) 8 9 mm² 3 x 3 VSON-HR (DLC) 8 3 mm² 2 x 1.5
  • 60-nA operating quiescent current
  • 100% duty-cycle mode with 120-nA IQ
  • Input voltage range VIN from 1.8 V to 6.5 V
  • Output current up to 750 mA
  • RF friendly DCS-Control™
  • 80% efficiency at 1 µA IOUT (3.6 VIN to 1.8 VOUT)
  • 16 selectable output voltages via VSET pin
  • Auto transition PFM/PWM or forced-PWM mode
  • Selectable forced PWM and STOP modes
  • Output discharge function
  • 25-nA shutdown current
  • SON-8, WCSP-6 and thermally enhanced HVSSOP-8 packages
  • 60-nA operating quiescent current
  • 100% duty-cycle mode with 120-nA IQ
  • Input voltage range VIN from 1.8 V to 6.5 V
  • Output current up to 750 mA
  • RF friendly DCS-Control™
  • 80% efficiency at 1 µA IOUT (3.6 VIN to 1.8 VOUT)
  • 16 selectable output voltages via VSET pin
  • Auto transition PFM/PWM or forced-PWM mode
  • Selectable forced PWM and STOP modes
  • Output discharge function
  • 25-nA shutdown current
  • SON-8, WCSP-6 and thermally enhanced HVSSOP-8 packages

The TPS62840 is a high-efficiency step-down converter with ultra-low operating quiescent current of typically 60 nA. The device contains special circuitry to achieve just 120 nA IQ in 100% mode to further extend battery life near the end of discharge.

The device uses DCS-Control to cleanly power radios and operates with a typical switching frequency of 1.8 MHz. In Power-Save Mode, the device extends the light load efficiency down to a load current range of 1 µA and below.

16 predefined output voltages can be selected by connecting a resistor to pin VSET, making the device flexible for various applications with a minimum amount of external components.

The STOP pin of the device immediately eliminates any switching noise in order to take a noise-free measurement in test and measurement systems.

The TPS62840 provides an output current of up to 750 mA. With an input voltage of 1.8 V to 6.5 V, the device supports multiple power sources such as 2S to 4S Alkaline, 1S to 2S Li-MnO2, or 1S Li-Ion/Li-SOCl2.

The TPS62840 is a high-efficiency step-down converter with ultra-low operating quiescent current of typically 60 nA. The device contains special circuitry to achieve just 120 nA IQ in 100% mode to further extend battery life near the end of discharge.

The device uses DCS-Control to cleanly power radios and operates with a typical switching frequency of 1.8 MHz. In Power-Save Mode, the device extends the light load efficiency down to a load current range of 1 µA and below.

16 predefined output voltages can be selected by connecting a resistor to pin VSET, making the device flexible for various applications with a minimum amount of external components.

The STOP pin of the device immediately eliminates any switching noise in order to take a noise-free measurement in test and measurement systems.

The TPS62840 provides an output current of up to 750 mA. With an input voltage of 1.8 V to 6.5 V, the device supports multiple power sources such as 2S to 4S Alkaline, 1S to 2S Li-MnO2, or 1S Li-Ion/Li-SOCl2.
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類型 標題 日期
* Data sheet TPS62840 1.8-V to 6.5-V, 750-mA, 60-nA IQ Step-Down Converter datasheet (Rev. D) PDF | HTML 2020年 4月 27日
Application note QFN and SON PCB Attachment (Rev. C) PDF | HTML 2023年 12月 6日
White paper 克服低功耗應用中的低 IQ 挑戰 (Rev. B) PDF | HTML 2023年 4月 19日
Application note Quick Reference Guide To TI Buck Switching DC/DC Application Notes (Rev. B) PDF | HTML 2022年 5月 23日
Technical article 3 quiescent-current (Iq) specifications you need to understand PDF | HTML 2021年 11月 12日
Application note High-Performance CMOS Image Sensor Power Supply in Industrial Camera and Vision (Rev. A) 2021年 7月 30日
EVM User's guide TPS62841-2EVM123 EVM User's Guide (Rev. A) PDF | HTML 2021年 6月 3日
Application note Extend Battery Life with <100 nA IQ Buck Converter Achieving <150 µV Voltage Rip (Rev. A) PDF | HTML 2021年 5月 7日
Selection guide Buck Converter Quick Reference Guide (Rev. B) 2021年 4月 8日
Technical article Advantages of the STOP function for low-noise data-acquisition applications PDF | HTML 2020年 3月 31日
White paper Benefits of a Resistor-to-Digital Converter in Ultra-Low Power Supplies 2019年 10月 14日
EVM User's guide TPS62842EVM-103 User's Guide 2019年 8月 28日
Technical article Deciphering low Iq: Using WEBENCH® to design near 100% duty-cycle for ultra-low po PDF | HTML 2019年 7月 15日
Technical article Do all rails need low Iq? PDF | HTML 2019年 7月 15日
EVM User's guide TPS62840-1YBGEVM56 User's Guide 2019年 5月 24日
EVM User's guide TPS62840-1DLCEVM55 User's Guide 2019年 5月 15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
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
Technical article Never lose your luggage again with a smart tracker design PDF | HTML 2017年 10月 20日
Analog Design Journal Testing tips for applying external power to supply outputs without an input voltage 2016年 10月 24日
Analog Design Journal Understanding frequency variation in the DCS-Control(TM) topology 2015年 10月 30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
Analog Design Journal Accurately measuring efficiency of ultralow-IQ devices 2014年 1月 22日
Analog Design Journal High-efficiency, low-ripple DCS-Control offers seamless PWM/pwr-save transitions 2013年 7月 25日
Application note How to Measure the Control Loop of DCS-Control Devices (Rev. A) 2012年 8月 9日
Application note Understanding the Absolute Maximum Ratings of the SW Node (Rev. A) 2012年 1月 13日
Application note Choosing an Appropriate Pull-up/Pull-down Resistor for Open Drain Outputs 2011年 9月 19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)。

開發板

TPS62840-1DLCEVM55 — 60-nA IQ、QFN 封裝、高效率 750-mA 降壓轉換器評估模組 (2 電路)

The TPS62840-1DLCEVM55 evaluation module (EVM) facilitates the evaluation of the TPS6284XDLC family of 750-mA step-down converters with 60-nA IQ in small 1.5-mm by 2.0-mm QFN packages. The EVM contains 2 separate circuits to create output voltages between 0.8 V and 3.3 V from higher input voltages (...)

使用指南: PDF
TI.com 無法提供
開發板

TPS62840-1YBGEVM56 — 60-nA IQ、WCSP 封裝、高效率 750-mA 降壓轉換器評估模組 (2 電路)

The TPS62840-1YBGEVM056 evaluation module (EVM) facilitates the evaluation of the TPS6284XYBG family of 750-mA step-down converters with 60-nA IQ in small 1.5-mm by 1-mm WCSP packages with 0.4-mm pitch. The EVM contains 2 separate circuits to create output voltages between 0.8 V and 3.3 V from (...)

使用指南: PDF
TI.com 無法提供
開發板

TPS62841-2EVM123 — TPS62841 和 TPS62842 60-nA IQ、DGR 封裝、750-mA 降壓轉換器評估模組 (2 個電路)

The TPS62841-2EVM123 evaluation module (EVM) facilitates the evaluation of the TPS6284XDGR 750-mA step-down converter with 60-nA IQ in a high thermal performance HVSSOP package. The EVM contains two separate circuits to create output voltages between 0.8 V and 3.6 V from higher input voltages (...)

使用指南: PDF | HTML
TI.com 無法提供
開發板

TPS62842EVM-103 — 60-nA IQ、DGR 封裝、高效率 750-mA 降壓轉換器評估模組

The TPS62842EVM-103 evaluation module (EVM) facilitates the evaluation of the TPS62842DGR 750-mA step-down converter with 60-nA IQ in a high thermal performance HVSSOP package. The EVM contains a circuit to convert output voltages between 1.8 V and 3.6 V from higher input voltages between 1.8 V and (...)

使用指南: PDF
TI.com 無法提供
模擬型號

TPS62840 PSpice Unencrypted Transient Model (Rev. C)

SLUM691C.ZIP (83 KB) - PSpice Model
下載
模擬型號

TPS62841 PSPICE Model

SLVMD75.ZIP (98 KB) - PSpice Model
下載
模擬型號

TPS62842 PSpice Transient Model

SLVMD74.ZIP (92 KB) - PSpice Model
下載
Gerber 檔案

BSR055 Gerbers

SLVC773.ZIP (452 KB)
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Gerber 檔案

BSR056 Gerbers

SLVC774.ZIP (445 KB)
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參考設計

TIDA-010224 — 可延長電池壽命的低功耗無線攝影機參考設計

此參考設計結合領先業界的影像處理、連線、感測器和電源，可為電池供電無線攝影機提供解決方案。高效電源轉換器與最佳化系統架構，有助於延長電池壽命。影像
具有 Wi-Fi® 連接裝置的處理器可實現安全高品質即時視訊串流和雙向音訊串流，並具有降噪和迴聲消除功能。此設計包含紅外線 (IR) LED 與 IR Cut 濾波器，以提供夜視功能。
Design guide: PDF
電路圖: PDF
參考設計

TIDA-010072 — 適合呼吸應用的鼓風機與閥門控制參考設計

This reference design provides a compact system design capable of supporting motor acceleration and deceleration up to ±200 kRPM/s, which is a key requirement in many respirator applications. The design supports a number of offboard C2000 controllers including (...)
Design guide: PDF
電路圖: PDF
參考設計

TIDA-010053 — 使用一次電池，且適用於智慧電表無線模組的低功耗選項參考設計

This reference design showcases three different power architectures for smart flow meters with lithium manganese dioxide (LiMnO2) primary batteries and commercial off-the-shelf narrowband modules for Internet of Things (IoT)-related applications. The three power solutions are combined with the (...)
Design guide: PDF
電路圖: PDF
封裝 引腳 下載
DSBGA (YBG) 6 檢視選項
HVSSOP (DGR) 8 檢視選項
VSON-HR (DLC) 8 檢視選項
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