TPS62745

現行

具 VSEL 和輸入電壓開關的 3.3V-10V 輸入、300mA 超低 Iq 降壓轉換器

現在提供此產品的更新版本

open-in-new 比較替代產品
功能與所比較的裝置相似
TPS629203 現行 採用 SOT-583 封裝的 3-V 至 17-V、0.3-A、低 IQ 同步降壓轉換器 Improved efficiency, smaller size and lower IQ.

產品詳細資料

Rating Catalog Operating temperature range (°C) -40 to 125 Topology Buck Type Converter Iout (max) (A) 0.3 Vin (min) (V) 3.3 Vin (max) (V) 10 Switching frequency (min) (kHz) 2500 Switching frequency (max) (kHz) 2500 Features Adaptive/Dynamic Voltage Scaling, Enable, Light Load Efficiency, Output discharge, Power good, Soft Start Fixed, Synchronous Rectification Control mode Constant on-time (COT), DCS-Control Vout (min) (V) 1.8 Vout (max) (V) 3.3 Iq (typ) (µA) 0.4 Duty cycle (max) (%) 100
Rating Catalog Operating temperature range (°C) -40 to 125 Topology Buck Type Converter Iout (max) (A) 0.3 Vin (min) (V) 3.3 Vin (max) (V) 10 Switching frequency (min) (kHz) 2500 Switching frequency (max) (kHz) 2500 Features Adaptive/Dynamic Voltage Scaling, Enable, Light Load Efficiency, Output discharge, Power good, Soft Start Fixed, Synchronous Rectification Control mode Constant on-time (COT), DCS-Control Vout (min) (V) 1.8 Vout (max) (V) 3.3 Iq (typ) (µA) 0.4 Duty cycle (max) (%) 100
WSON (DSS) 12 6 mm² 3 x 2
  • Input Voltage Range VIN from 3.3 V to 10 V
  • Typical 400 nA Quiescent Current
  • Up to 90% efficiency with load currents >15 µA
  • Up to 300 mA Output Current
  • RF Friendly DCS-Control™
  • Low Output Ripple Voltage
  • 16 Selectable Output Voltages from
    • 1.8 V to 3.3 V (TPS62745)
    • 1.3 V to 2.8 V (TPS627451)
  • Integrated input voltage switch
  • Integrated Discharge Function at VOUT
  • Open Drain Power Good Output
  • Operates with a Tiny 3.3 µH or 4.7 µH Inductor
  • Small 3 mm × 2 mm WSON Package
  • Input Voltage Range VIN from 3.3 V to 10 V
  • Typical 400 nA Quiescent Current
  • Up to 90% efficiency with load currents >15 µA
  • Up to 300 mA Output Current
  • RF Friendly DCS-Control™
  • Low Output Ripple Voltage
  • 16 Selectable Output Voltages from
    • 1.8 V to 3.3 V (TPS62745)
    • 1.3 V to 2.8 V (TPS627451)
  • Integrated input voltage switch
  • Integrated Discharge Function at VOUT
  • Open Drain Power Good Output
  • Operates with a Tiny 3.3 µH or 4.7 µH Inductor
  • Small 3 mm × 2 mm WSON Package

The TPS62745 is a high efficiency ultra low power synchronous step down converter optimized for low power wireless applications. It provides a regulated output voltage consuming only 400-nA quiescent current. The device operates from two rechargeable Li-Ion batteries, Li-primary battery chemistries such as Li-SOCl2, Li-SO2, Li-MnO2 or four to six cell alkaline batteries. The input voltage range up to 10 V allows also operation from a USB port and thin-film solar modules. The output voltage is set with four VSEL pins between 1.8 V and 3.3 V for TPS62745 or 1.3 V and 2.8 V for TPS627451. TPS62745 features low output ripple voltage and low noise with a small output capacitor. An internal input voltage switch controlled by pin EN_VIN_SW connects the supply voltage to pin VIN_SW. The switch is intended to be used for an external voltage divider, scaling down the input voltage for an external ADC. The switch is automatically opened when the supply voltage is below the undervoltage lockout threshold. The TPS62745 is available in a small 12 pin 3 mm × 2 mm WSON package.

The TPS62745 is a high efficiency ultra low power synchronous step down converter optimized for low power wireless applications. It provides a regulated output voltage consuming only 400-nA quiescent current. The device operates from two rechargeable Li-Ion batteries, Li-primary battery chemistries such as Li-SOCl2, Li-SO2, Li-MnO2 or four to six cell alkaline batteries. The input voltage range up to 10 V allows also operation from a USB port and thin-film solar modules. The output voltage is set with four VSEL pins between 1.8 V and 3.3 V for TPS62745 or 1.3 V and 2.8 V for TPS627451. TPS62745 features low output ripple voltage and low noise with a small output capacitor. An internal input voltage switch controlled by pin EN_VIN_SW connects the supply voltage to pin VIN_SW. The switch is intended to be used for an external voltage divider, scaling down the input voltage for an external ADC. The switch is automatically opened when the supply voltage is below the undervoltage lockout threshold. The TPS62745 is available in a small 12 pin 3 mm × 2 mm WSON package.

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類型 標題 日期
* Data sheet TPS62745 Dual-cell Ultra Low IQ Step Down Converter for Low Power Wireless Applications datasheet (Rev. A) PDF | HTML 2015年 6月 10日
Application note Quick Reference Guide To TI Buck Switching DC/DC Application Notes (Rev. B) PDF | HTML 2022年 5月 23日
EVM User's guide TPS62745 Buck Converter Evaluation Module User's Guide (Rev. A) PDF | HTML 2021年 5月 26日
Selection guide Buck Converter Quick Reference Guide (Rev. B) 2021年 4月 8日
White paper Extending Battery Life in Smart E-Locks (Rev. A) 2020年 6月 4日
White paper Benefits of a Resistor-to-Digital Converter in Ultra-Low Power Supplies 2019年 10月 14日
Analog Design Journal Methods of output-voltage adjustment for DC/DC converters 2019年 6月 14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
Technical article Power topology choices for power-hungry devices PDF | HTML 2017年 8月 9日
Technical article Increasing battery life in IoT devices PDF | HTML 2017年 5月 5日
Technical article IoT is making buildings greener and more intelligent. Value versus affordability PDF | HTML 2017年 1月 4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

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

TPS62745EVM-622 — 超低 Iq、廣泛 VIN 降壓轉換器評估模組

The TPS62745EVM-622 is designed to help the user easily evaluate and test the operation and functionality of the TPS62745. The EVM converts a 3.3-V to 10-V input voltage to a regulated output voltage that is set between 1.8 V and 3.3 V at up to 300 mA. The TPS62745 also includes an integrated input (...)

使用指南: PDF | HTML
TI.com 無法提供
模擬型號

TPS62745 PSpice Unencrypted Transient Model (Rev. A)

SLVMB11A.ZIP (91 KB) - PSpice Model
參考設計

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With the increasing number of building and home owners looking to retrofit smart locks (or electronic locks) to their building or home, wireless battery powered smart locks are becoming increasingly popular in today’s market.  In a smart lock application, the high current motor and (...)
Design guide: PDF
電路圖: PDF
參考設計

TIDM-CAPTIVATE-E-LOCK — MSP430FR2633 微控制器 CapTIvate 電子鎖和鍵盤參考設計

This reference design demonstrates an ultra-low-power capacitive touch panel based on a single MSP430™ microcontroller (MCU) with CapTIvate™ technology. The use of self and mutual capacitance technology enables multifunctional capacitive touch panels (buttons and proximity sensor) for (...)
Design guide: PDF
電路圖: PDF
參考設計

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此參考設計旨在透過連線暖氣、通風與空調 (HVAC),對多個房間的舒適性進行控制。藉由感測溫度、濕度及壓力,即可在每個區域中進行獨立監控與氣流調整。此參考設計可將定風量 (CAV) 轉換為變風量 (VAV) 系統。收集到的資料可透過無線方式傳輸至智慧型恆溫器或閘道。可採用板載感測器進行預測性維護、縮短技術故障排除時間,並減少整體能源消耗。長久的電池續航力讓智慧阻尼器能持續運作多年,無需花費時間與金錢更換電池。
Design guide: PDF
電路圖: PDF
參考設計

TIDA-010018 — 適用於低功耗應用的隔離式電源和數據介面參考設計

This reference design provides power and data isolation for low and ultra-low power applications. Generating isolated and non-isolated power rails with a high efficiency and containing a power efficient isolated data interface for three forward- plus one reverse-direction channels. Targeted (...)
Design guide: PDF
電路圖: PDF
參考設計

TIDC-DSSS868WMBUS-DC — 適用於 wM-Bus T-/C-模式和 DSSS 編碼數據封包 @ 868.95MHz 的電池供電數據收集器參考設計

TIDC-130 可讓資料收集器具備最佳韌體,以 868.95 MHz 頻率的頻繁傳輸 (T-) 和小型 (C-) 模式,接收無線 M-Bus (wM-Bus) 封包。為了擴大範圍,也支援自訂的直接序列展頻 (DSSS) 編碼封包接收。此參考設計可針對 169-MHz 和 433-MHz 頻帶的 wM-Bus 和 DSSS 資料收集器和行動讀取器進行調整。
Design guide: PDF
電路圖: PDF
封裝 針腳 CAD 符號、佔位空間與 3D 模型
WSON (DSS) 12 Ultra Librarian

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  • 鉛塗層/球物料
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  • 材料內容
  • 認證摘要
  • 進行中持續性的可靠性監測
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