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Convertidores de CC/CC

TPS61260

ACTIVO

Convertidor elevador de tensión de entrada muy baja con tensión de salida ajustable

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TPS61260

ACTIVO
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Detalles del producto

Rating Catalog Topology Boost Vin (max) (V) 4 Vin (min) (V) 0.8 Vout (max) (V) 4 Vout (min) (V) 1.8 Switch current limit (typ) (A) 0.7 Features Load Disconnect Operating temperature range (°C) -40 to 85 Iq (typ) (A) 0.000029 Duty cycle (max) (%) 100
Rating Catalog Topology Boost Vin (max) (V) 4 Vin (min) (V) 0.8 Vout (max) (V) 4 Vout (min) (V) 1.8 Switch current limit (typ) (A) 0.7 Features Load Disconnect Operating temperature range (°C) -40 to 85 Iq (typ) (A) 0.000029 Duty cycle (max) (%) 100
WSON (DRV) 6 4 mm² (2 mm × 2 mm)
  • Input Voltage Range from 0.8 V to 4.0 V
  • Up to 95% Efficiency
  • 100 mA Output Current at 3.3 Vout (VIN > 1 V)
  • Fixed and Adjustable Output Voltage Options from 1.8 V to 4.0 V
  • Programmable Average Output Current from 10 mA to 100 mA
  • Adjustable Output Current Limit for Smallest Inductor
  • Power Save Mode for Improved Efficiency at Low Output Power
  • 29-µA Quiescent Current
  • Advanced Softstart
  • Quasi Fixed Frequency Operation at 2.5 MHz
  • Output Overvoltage Protection
  • Load Disconnect During Shutdown
  • Undervoltage Lockout
  • Available in a 2.00 × 2.00 mm, 6-Pin WSON Package
  • Input Voltage Range from 0.8 V to 4.0 V
  • Up to 95% Efficiency
  • 100 mA Output Current at 3.3 Vout (VIN > 1 V)
  • Fixed and Adjustable Output Voltage Options from 1.8 V to 4.0 V
  • Programmable Average Output Current from 10 mA to 100 mA
  • Adjustable Output Current Limit for Smallest Inductor
  • Power Save Mode for Improved Efficiency at Low Output Power
  • 29-µA Quiescent Current
  • Advanced Softstart
  • Quasi Fixed Frequency Operation at 2.5 MHz
  • Output Overvoltage Protection
  • Load Disconnect During Shutdown
  • Undervoltage Lockout
  • Available in a 2.00 × 2.00 mm, 6-Pin WSON Package

The TPS6126x devices provide a power supply solution for products powered by either single or dual cell alkaline, NiCd, or NiMH batteries. Its unique advanced softstart makes it also suitable for products powered by high output impedance battery types, like coin cells. Output currents can go as high as 100 mA while using a single cell alkaline battery, and discharge it down to 0.8 V or lower.

The boost converter is based on a quasi fixed frequency, pulse-width-modulation (PWM) controller using synchronous rectification to obtain maximum efficiency. At low load currents, the converter enters Power Save Mode to ensure high efficiency over a wide load current range. The maximum average current in the switches is limited to a programmable value which can go as high as 700 mA. The output voltage is programmable using an external resistor divider, or is fixed internally on the chip. In addition, the average output current can be programmed as well. The converter then regulates the programmed output voltage or the programmed output current, which ever demands lower output power. The converter can be disabled to minimize battery drain. During shutdown, the load is disconnected from the battery. The device is packaged in a 6-pin WSON (DRV) package.

The TPS6126x devices provide a power supply solution for products powered by either single or dual cell alkaline, NiCd, or NiMH batteries. Its unique advanced softstart makes it also suitable for products powered by high output impedance battery types, like coin cells. Output currents can go as high as 100 mA while using a single cell alkaline battery, and discharge it down to 0.8 V or lower.

The boost converter is based on a quasi fixed frequency, pulse-width-modulation (PWM) controller using synchronous rectification to obtain maximum efficiency. At low load currents, the converter enters Power Save Mode to ensure high efficiency over a wide load current range. The maximum average current in the switches is limited to a programmable value which can go as high as 700 mA. The output voltage is programmable using an external resistor divider, or is fixed internally on the chip. In addition, the average output current can be programmed as well. The converter then regulates the programmed output voltage or the programmed output current, which ever demands lower output power. The converter can be disabled to minimize battery drain. During shutdown, the load is disconnected from the battery. The device is packaged in a 6-pin WSON (DRV) package.
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Documentación técnica

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Documentación principal Tipo Título Opciones de formato Descargar la versión más reciente en inglés Fecha
* Hoja de datos TPS6126x 0.8-V Input Synchronous Boost Converters with 100-mA Output Current datasheet (Rev. C) PDF | HTML 23/04/2018
Nota sobre la aplicación QFN and SON PCB Attachment (Rev. C) PDF | HTML 6/12/2023
Nota sobre la aplicación Performing Accurate PFM Mode Efficiency Measurements (Rev. A) 11/12/2018
Guía de selección Power Management Guide 2018 (Rev. R) 25/06/2018
Nota sobre la aplicación Calculating and Measuring the No Load Input Current of the Boost Converter 23/09/2016
Nota sobre la aplicación Five Steps to a Good PCB Layout of the Boost Converter PDF | HTML 3/05/2016
Nota sobre la aplicación Design of UVLO for LM27313 (Rev. B) 8/04/2014
Nota sobre la aplicación Automated Frequency Response Analyzer 9/10/2013
Analog Design Journal Design considerations for a resistive feedback divider in a DC/DC converter 26/04/2012
Analog Design Journal IQ: What it is, what it isn’t, and how to use it 17/06/2011

Diseño y desarrollo

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Placa de evaluación

TPS61260EVM-673 — Módulo de evaluación para convertidor elevador TPS61260 de tensión de entrada muy baja con tensión d

This user’s guide describes the TPS6126x evaluation module (EVM) and how to perform a stand-alone evaluation to allow the EVM to interface with the system and host. The TPS61260EVM-673 converter is programmed from the factory to deliver a 3.3-Vdc output voltage for a continuous load of up to (...)

Guía del usuario: PDF
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