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

TPS746

ACTIVO

Regulador de tensión de caída ultrabaja ajustable de 1 A, IQ baja y alta precisión, con buena potenc

Detalles del producto

Output options Adjustable Output Iout (max) (A) 1 Vin (max) (V) 6 Vin (min) (V) 1.5 Vout (max) (V) 5.5 Vout (min) (V) 0.55 Rating Catalog Noise (µVrms) 53 PSRR at 100 KHz (dB) 45 Iq (typ) (mA) 0.025 Thermal resistance θJA (°C/W) 80.3 Load capacitance (min) (µF) 1 Regulated outputs (#) 1 Features Enable, Foldback Overcurrent protection, Output discharge, Power good, Soft start Accuracy (%) 1 Dropout voltage (Vdo) (typ) (mV) 190 Operating temperature range (°C) -40 to 125
Output options Adjustable Output Iout (max) (A) 1 Vin (max) (V) 6 Vin (min) (V) 1.5 Vout (max) (V) 5.5 Vout (min) (V) 0.55 Rating Catalog Noise (µVrms) 53 PSRR at 100 KHz (dB) 45 Iq (typ) (mA) 0.025 Thermal resistance θJA (°C/W) 80.3 Load capacitance (min) (µF) 1 Regulated outputs (#) 1 Features Enable, Foldback Overcurrent protection, Output discharge, Power good, Soft start Accuracy (%) 1 Dropout voltage (Vdo) (typ) (mV) 190 Operating temperature range (°C) -40 to 125
WSON (DRV) 6 4 mm² 2 x 2
  • Input Voltage Range: 1.5 V to 6.0 V
  • Adjustable Output Voltage:
    • 0.55 V to 5.5 V
  • Very Low Dropout:
    • 225 mV (max) at 1 A (3.3 VOUT)
  • High Output Accuracy:
    • 0.7%, Typical
    • 1%, Maximum Over Temperature (85°C)
  • Open-Drain Power-Good Output
  • Power-Good Rising Delay:
    • TPS746: 165 µs
    • TPS746B: 5 ms
  • IQ: 25 µA (Typical)
  • Built-In Soft-Start With Monotonic VOUT Rise
  • Package:
    • 2-mm × 2-mm 6-Pin WSON (DRV)
  • Active Output Discharge
  • Input Voltage Range: 1.5 V to 6.0 V
  • Adjustable Output Voltage:
    • 0.55 V to 5.5 V
  • Very Low Dropout:
    • 225 mV (max) at 1 A (3.3 VOUT)
  • High Output Accuracy:
    • 0.7%, Typical
    • 1%, Maximum Over Temperature (85°C)
  • Open-Drain Power-Good Output
  • Power-Good Rising Delay:
    • TPS746: 165 µs
    • TPS746B: 5 ms
  • IQ: 25 µA (Typical)
  • Built-In Soft-Start With Monotonic VOUT Rise
  • Package:
    • 2-mm × 2-mm 6-Pin WSON (DRV)
  • Active Output Discharge

The TPS746 is an adjustable 1-A low-dropout (LDO) regulator with power-good functionality. This device is available in a small, 6-pin, 2-mm × 2-mm WSON package and consumes very low quiescent current and provides fast line and load transient performance. The TPS746 features an ultra-low dropout of 225 mV at 1 A that can help improve the power efficiency of the system.

The TPS746 is optimized for a wide variety of applications by supporting an input voltage range from 1.5 V to 6.0 V and an externally adjustable output range of 0.55 V to 5.5 V. The low output voltage enables this LDO to power the modern microcontrollers with lower core voltages. Additionally, the TPS746 has a low IQ with enable functionality to minimize standby power. This device features an internal soft-start to lower the inrush current, which provides a controlled voltage to the load and minimizes the input voltage drop during start up.

The TPS746 has a power-good (PG) output that monitors the voltage at the feedback pin to indicate the status of the output voltage. The EN input and PG output can be used for sequencing multiple power sources in the system.

The TPS746 is stable with small ceramic output capacitors, allowing for a small overall solution size. A precision band-gap and error amplifier provides a high accuracy of 0.7% max at 25ºC and 1% max over temperature (85ºC). This device includes integrated thermal shutdown, current limit, and undervoltage lockout (UVLO) features. The TPS746 has an internal foldback current limit that helps reduce the thermal dissipation during short-circuit events.




The TPS746 is an adjustable 1-A low-dropout (LDO) regulator with power-good functionality. This device is available in a small, 6-pin, 2-mm × 2-mm WSON package and consumes very low quiescent current and provides fast line and load transient performance. The TPS746 features an ultra-low dropout of 225 mV at 1 A that can help improve the power efficiency of the system.

The TPS746 is optimized for a wide variety of applications by supporting an input voltage range from 1.5 V to 6.0 V and an externally adjustable output range of 0.55 V to 5.5 V. The low output voltage enables this LDO to power the modern microcontrollers with lower core voltages. Additionally, the TPS746 has a low IQ with enable functionality to minimize standby power. This device features an internal soft-start to lower the inrush current, which provides a controlled voltage to the load and minimizes the input voltage drop during start up.

The TPS746 has a power-good (PG) output that monitors the voltage at the feedback pin to indicate the status of the output voltage. The EN input and PG output can be used for sequencing multiple power sources in the system.

The TPS746 is stable with small ceramic output capacitors, allowing for a small overall solution size. A precision band-gap and error amplifier provides a high accuracy of 0.7% max at 25ºC and 1% max over temperature (85ºC). This device includes integrated thermal shutdown, current limit, and undervoltage lockout (UVLO) features. The TPS746 has an internal foldback current limit that helps reduce the thermal dissipation during short-circuit events.




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Documentación técnica

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Tipo Título Fecha
* Data sheet TPS746 1-A High Accuracy Adjustable LDO With Power-Good in a Small Size Package datasheet (Rev. A) PDF | HTML 11 dic 2018
Application note Power Supply Design for AMD Versal™ AI Edge Series PDF | HTML 29 ene 2024
EVM User's guide TPS746EVM-009 Evaluation Module User's Guide 14 mar 2018

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.

Placa de evaluación

TPS746EVM-009 — Módulo de evaluación TPS746 de regulador lineal LDO ajustable de 1 A con buena potencia

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The EVM circuit board is configured to be a reference design for engineering (...)

Guía del usuario: PDF
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Diseños de referencia

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Design guide: PDF
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Pedidos y calidad

Información incluida:
  • RoHS
  • 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
Información incluida:
  • Lugar de fabricación
  • Lugar de ensamblaje

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Soporte y capacitación

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El contenido lo proporcionan “tal como está” TI y los colaboradores de la comunidad y no constituye especificaciones de TI. Consulte los términos de uso.

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