Inicio Gestión de la energía Reguladores lineales y de baja salida (LDO)
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Gestión de la energía
Reguladores lineales y de baja salida (LDO)

TPS781

ACTIVO

Regulador de tensión de caída baja de 150 mA e IQ ultrabaja, con activación

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TPS781

ACTIVO
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Detalles del producto

Output options Adjustable Output, Dual output, Fixed Output Iout (max) (A) 0.15 Vin (max) (V) 5.5 Vin (min) (V) 2.2 Vout (max) (V) 5.25 Vout (min) (V) 1.2 Fixed output options (V) 2, 2.2, 2.5, 3.3 Noise (µVrms) 86 Iq (typ) (mA) 0.0005 Thermal resistance θJA (°C/W) 65 Rating Catalog Load capacitance (min) (µF) 1 Regulated outputs (#) 1 Features Enable Accuracy (%) 3 PSRR at 100 KHz (dB) 13 Dropout voltage (Vdo) (typ) (mV) 200 Operating temperature range (°C) -40 to 125
Output options Adjustable Output, Dual output, Fixed Output Iout (max) (A) 0.15 Vin (max) (V) 5.5 Vin (min) (V) 2.2 Vout (max) (V) 5.25 Vout (min) (V) 1.2 Fixed output options (V) 2, 2.2, 2.5, 3.3 Noise (µVrms) 86 Iq (typ) (mA) 0.0005 Thermal resistance θJA (°C/W) 65 Rating Catalog Load capacitance (min) (µF) 1 Regulated outputs (#) 1 Features Enable Accuracy (%) 3 PSRR at 100 KHz (dB) 13 Dropout voltage (Vdo) (typ) (mV) 200 Operating temperature range (°C) -40 to 125
SOT-23-THN (DDC) 5 8.12 mm² 2.9 x 2.8 WSON (DRV) 6 4 mm² 2 x 2
  • Low IQ: 1µA
  • 150mA, Low-Dropout Regulator with Pin-Selectable Dual Voltage Level Output
  • Low Dropout: 200mV at 150mA
  • 3% Accuracy Over Load/Line/Temperature
  • Available in Dual-Level, Fixed Output Voltages from 1.5V to 4.2V Using Innovative Factory EPROM Programming
  • Available in an Adjustable Version from 1.22V to 5.25V or a Dual-Level Output Version
  • VSET Pin Toggles Output Voltage Between Two Factory-Programmed Voltage Levels
  • Stable with a 1.0µF Ceramic Capacitor
  • Thermal Shutdown and Overcurrent Protection
  • CMOS Logic Level-Compatible Enable Pin
  • Available in DDC (TSOT23-5) or DRV (2mm × 2mm SON-6) Package Options
  • APPLICATIONS
    • TI MSP430 Attach Applications
    • Power Rails with Programming Mode
    • Dual Voltage Levels for Power-Saving Mode
    • Wireless Handsets, Smartphones, PDAs, MP3 Players, and Other Battery-Operated Handheld Products

All other trademarks are the property of their respective owners
  • Low IQ: 1µA
  • 150mA, Low-Dropout Regulator with Pin-Selectable Dual Voltage Level Output
  • Low Dropout: 200mV at 150mA
  • 3% Accuracy Over Load/Line/Temperature
  • Available in Dual-Level, Fixed Output Voltages from 1.5V to 4.2V Using Innovative Factory EPROM Programming
  • Available in an Adjustable Version from 1.22V to 5.25V or a Dual-Level Output Version
  • VSET Pin Toggles Output Voltage Between Two Factory-Programmed Voltage Levels
  • Stable with a 1.0µF Ceramic Capacitor
  • Thermal Shutdown and Overcurrent Protection
  • CMOS Logic Level-Compatible Enable Pin
  • Available in DDC (TSOT23-5) or DRV (2mm × 2mm SON-6) Package Options
  • APPLICATIONS
    • TI MSP430 Attach Applications
    • Power Rails with Programming Mode
    • Dual Voltage Levels for Power-Saving Mode
    • Wireless Handsets, Smartphones, PDAs, MP3 Players, and Other Battery-Operated Handheld Products

All other trademarks are the property of their respective owners

The TPS781 family of low-dropout (LDO) regulators offer the benefits of ultralow power (IQ = 1µA), miniaturized packaging (2×2 SON-6), and selectable dual-level output voltage levels. An adjustable version is also available, but does not have the capability to shift voltage levels.

The VSET pin allows the end user to switch between two voltage levels on-the-fly through a microprocessor-compatible input. This LDO is designed specifically for battery-powered applications where dual-level voltages are needed. With ultralow IQ (1µA), microprocessors, memory cards, and smoke detectors are ideal applications for this device.

The ultralow-power and selectable dual-level output voltages allow designers to customize power consumption for specific applications. Designers can now shift to a lower voltage level in a battery-powered design when the microprocessor is in sleep mode, further reducing overall system power consumption. The two voltage levels are preset at the factory through a unique architecture using an EPROM. The EPROM technique allows for numerous output voltage options between VSET low (1.5V to 4.2V) and VSET high (2.0V to 3.0V) in the fixed output version only. See the table in this data sheet or consult with your local factory representative for exact voltage options and ordering information; minimum order quantities may apply.

The TPS781 series are designed to be compatible with the TI MSP430 and other similar products. The enable pin is compatible with standard CMOS logic. This LDO is stable with any output capacitor greater than 1.0µF. Therefore, implementations of this device require minimal board space because of miniaturized packaging and a potentially small output capacitor. The TPS781 series IQ (1µA) also come with thermal shutdown and current limit to protect the device during fault conditions. All packages have an operating temperature range of TJ = -40°C to +125°C. For high-performance applications requiring a dual-level voltage option, consider the TPS780 series, with an IQ of 500nA and dynamic voltage scaling.

The TPS781 family of low-dropout (LDO) regulators offer the benefits of ultralow power (IQ = 1µA), miniaturized packaging (2×2 SON-6), and selectable dual-level output voltage levels. An adjustable version is also available, but does not have the capability to shift voltage levels.

The VSET pin allows the end user to switch between two voltage levels on-the-fly through a microprocessor-compatible input. This LDO is designed specifically for battery-powered applications where dual-level voltages are needed. With ultralow IQ (1µA), microprocessors, memory cards, and smoke detectors are ideal applications for this device.

The ultralow-power and selectable dual-level output voltages allow designers to customize power consumption for specific applications. Designers can now shift to a lower voltage level in a battery-powered design when the microprocessor is in sleep mode, further reducing overall system power consumption. The two voltage levels are preset at the factory through a unique architecture using an EPROM. The EPROM technique allows for numerous output voltage options between VSET low (1.5V to 4.2V) and VSET high (2.0V to 3.0V) in the fixed output version only. See the table in this data sheet or consult with your local factory representative for exact voltage options and ordering information; minimum order quantities may apply.

The TPS781 series are designed to be compatible with the TI MSP430 and other similar products. The enable pin is compatible with standard CMOS logic. This LDO is stable with any output capacitor greater than 1.0µF. Therefore, implementations of this device require minimal board space because of miniaturized packaging and a potentially small output capacitor. The TPS781 series IQ (1µA) also come with thermal shutdown and current limit to protect the device during fault conditions. All packages have an operating temperature range of TJ = -40°C to +125°C. For high-performance applications requiring a dual-level voltage option, consider the TPS780 series, with an IQ of 500nA and dynamic voltage scaling.
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Documentación técnica

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* Data sheet 150mA, LDO Reg, Ultralow-Power, Iq 1uA w/ Pin-Selectable, Dual-Level Output Volt datasheet (Rev. B) 11 may 2008
White paper Understanding the Foundations of Quiescent Current in Linear Power Systems 18 feb 2021
Application note LDO Noise Demystified (Rev. B) PDF | HTML 18 ago 2020
Application note A Topical Index of TI LDO Application Notes (Rev. F) 27 jun 2019
Application note LDO PSRR Measurement Simplified (Rev. A) PDF | HTML 09 ago 2017
EVM User's guide TPS78101 EVM 28 abr 2008

Diseño y desarrollo

Para conocer los términos adicionales o los recursos necesarios, haga clic en cualquier título de abajo para ver la página de detalles cuando esté disponible.

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Diseños de referencia

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Design guide: PDF
Esquema: PDF
Encapsulado Pines Símbolos CAD, huellas y modelos 3D
SOT-23-THN (DDC) 5 Ultra Librarian
WSON (DRV) 6 Ultra Librarian
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Pedidos y calidad

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  • REACH
  • 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 fabricación
  • Lugar de ensamblaje

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