Inicio Gestión de la energía Interruptores de alimentación y controladores de puertos de carga USB

TPS2046B

ACTIVO

Interruptor de alimentación USB de 2 canales, carga de 0.25 A, 2.7 V a 5.5 V y 70 mΩ, activo-bajo

Detalles del producto

Product type Fixed current limit, Power switch Vin (min) (V) 2.7 Vin (max) (V) 5.5 Continuous current (max) (A) 0.25 Current limit (A) 0.5 Operating temperature range (°C) -40 to 125 Enable Active Low Number of switches 2 Current limit accuracy at 1 A 0.4 Rating Catalog
Product type Fixed current limit, Power switch Vin (min) (V) 2.7 Vin (max) (V) 5.5 Continuous current (max) (A) 0.25 Current limit (A) 0.5 Operating temperature range (°C) -40 to 125 Enable Active Low Number of switches 2 Current limit accuracy at 1 A 0.4 Rating Catalog
SOIC (D) 8 29.4 mm² 4.9 x 6
  • 70-m High-Side MOSFET
  • 250-mA Continuous Current
  • Thermal and Short-Circuit Protection
  • Accurate Current Limit (0.3 A min, 0.7 A max)
  • Operating Range: 2.7 V to 5.5 V
  • 0.6-ms Typical Rise Time
  • Undervoltage Lockout
  • Deglitched Fault Report (OC)
  • No OC Glitch During Power Up
  • Maximum Standby Supply Current: 1-µA (Single and Dual) or 2-µA (Triple)
  • Bidirectional Switch
  • Ambient Temperature Range: -40°C to 85°C
  • ESD Protection
  • UL Pending
  • APPLICATIONS
    • Heavy Capacitive Loads
    • Short-Circuit Protections

  • 70-m High-Side MOSFET
  • 250-mA Continuous Current
  • Thermal and Short-Circuit Protection
  • Accurate Current Limit (0.3 A min, 0.7 A max)
  • Operating Range: 2.7 V to 5.5 V
  • 0.6-ms Typical Rise Time
  • Undervoltage Lockout
  • Deglitched Fault Report (OC)
  • No OC Glitch During Power Up
  • Maximum Standby Supply Current: 1-µA (Single and Dual) or 2-µA (Triple)
  • Bidirectional Switch
  • Ambient Temperature Range: -40°C to 85°C
  • ESD Protection
  • UL Pending
  • APPLICATIONS
    • Heavy Capacitive Loads
    • Short-Circuit Protections

The TPS204xB/TPS2055B power-distribution switches are intended for applications where heavy capacitive loads and short circuits are likely to be encountered. These devices incorporate 70-m N-channel MOSFET power switches for power-distribution systems that require multiple power switches in a single package. Each switch is controlled by a logic-enable input. Gate drive is provided by an internal charge pump designed to control the power-switch rise times and fall times to minimize current surges during switching. The charge pump requires no external components and allows operation from supplies as low as 2.7 V.

When the output load exceeds the current-limit threshold or a short is present, the device limits the output current to a safe level by switching into a constant-current mode, pulling the overcurrent (OCx) logic output low. When continuous heavy overloads and short-circuits increase the power dissipation in the switch, causing the junction temperature to rise, a thermal protection circuit shuts off the switch to prevent damage. Recovery from a thermal shutdown is automatic once the device has cooled sufficiently. Internal circuitry ensures that the switch remains off until valid input voltage is present. This power-distribution switch is designed to set current limit at 0.5 A typically.

The TPS204xB/TPS2055B power-distribution switches are intended for applications where heavy capacitive loads and short circuits are likely to be encountered. These devices incorporate 70-m N-channel MOSFET power switches for power-distribution systems that require multiple power switches in a single package. Each switch is controlled by a logic-enable input. Gate drive is provided by an internal charge pump designed to control the power-switch rise times and fall times to minimize current surges during switching. The charge pump requires no external components and allows operation from supplies as low as 2.7 V.

When the output load exceeds the current-limit threshold or a short is present, the device limits the output current to a safe level by switching into a constant-current mode, pulling the overcurrent (OCx) logic output low. When continuous heavy overloads and short-circuits increase the power dissipation in the switch, causing the junction temperature to rise, a thermal protection circuit shuts off the switch to prevent damage. Recovery from a thermal shutdown is automatic once the device has cooled sufficiently. Internal circuitry ensures that the switch remains off until valid input voltage is present. This power-distribution switch is designed to set current limit at 0.5 A typically.

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TPS2552D ACTIVO Interruptor de alimentación USB de 85 mΩ, ILIMIT ajustable de 0.075-1.7 A ILIMIT 2.5-6.5 V, 85m&O This product offers similar functionality with single-channel adjustable current limit.

Documentación técnica

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Tipo Título Fecha
* Data sheet Current-Limited Power-Distribution Switches datasheet (Rev. C) 04 oct 2007
Certificate US-36986-UL Certificate of Compliance IEC 62368-1 12 mar 2021
EVM User's guide Two-Channel, Power-Distribution Switch EVM (Rev. A) 01 jun 2012

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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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

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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