Inicio Gestión de la energía Convertidores de CA/CC y CC/CC (FET integrado)
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Gestión de la energía
Convertidores de CA/CC y CC/CC (FET integrado)

TPS62745

ACTIVO

Convertidor reductor con entrada de 3.3 V a 10 V e IQ ultrabajo de 300 mA con VSEL e interruptor de

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TPS629203 ACTIVO Convertidor reductor síncrono de 3 V a 17 V, 0.3 A y bajo IQ en encapsulado SOT-583 Improved efficiency, smaller size and lower IQ.

TPS62745

ACTIVO
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Detalles del producto

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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Documentación técnica

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* Data sheet TPS62745 Dual-cell Ultra Low IQ Step Down Converter for Low Power Wireless Applications datasheet (Rev. A) PDF | HTML 10 jun 2015
Application note Quick Reference Guide To TI Buck Switching DC/DC Application Notes (Rev. B) PDF | HTML 23 may 2022
EVM User's guide TPS62745 Buck Converter Evaluation Module User's Guide (Rev. A) PDF | HTML 26 may 2021
Selection guide Buck Converter Quick Reference Guide (Rev. B) 08 abr 2021
White paper Extending Battery Life in Smart E-Locks (Rev. A) 04 jun 2020
White paper Benefits of a Resistor-to-Digital Converter in Ultra-Low Power Supplies 14 oct 2019
Analog Design Journal Methods of output-voltage adjustment for DC/DC converters 14 jun 2019
Analog Design Journal Understanding 100% mode in low-power DC/DC converters 22 jun 2018
Analog Design Journal Achieving a clean startup by using a DC/DC converter with a precise enable-pin threshold 24 oct 2017
Technical article Never lose your luggage again with a smart tracker design PDF | HTML 20 oct 2017
Technical article Power topology choices for power-hungry devices PDF | HTML 09 ago 2017
Technical article Increasing battery life in IoT devices PDF | HTML 05 may 2017
Technical article IoT is making buildings greener and more intelligent. Value versus affordability PDF | HTML 04 ene 2017
Analog Design Journal Testing tips for applying external power to supply outputs without an input voltage 24 oct 2016
Analog Design Journal Understanding frequency variation in the DCS-Control(TM) topology 30 oct 2015

Diseño y desarrollo

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Placa de evaluación

TPS62745EVM-622 — Módulo de evaluación de convertidor reductor VIN amplio con IQ ultrabajo

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 (...)

Guía del usuario: PDF | HTML
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Modelo de simulación

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SLVMB11A.ZIP (91 KB) - PSpice Model
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Encapsulado Pines Símbolos CAD, huellas y modelos 3D
WSON (DSS) 12 Ultra Librarian
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Pedidos y calidad

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  • Marcado del dispositivo
  • Acabado de plomo/material de la bola
  • Clasificación de nivel de sensibilidad a la humedad (MSL) / reflujo máximo
  • Estimaciones de tiempo medio entre fallas (MTBF)/fallas en el tiempo (FIT)
  • Contenido del material
  • Resumen de calificaciones
  • Monitoreo continuo de confiabilidad
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  • Lugar de ensamblaje

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