Inicio Administración de potencia Circuitos integrados de alimentación a través de Ethernet (PoE) Dispositivos alimentados

LM5070

ACTIVO

PD de PoE de Clase 3 con controlador DC-DC de retorno y UVLO ajustable

Detalles del producto

PoE standards supported 802.3at Type 1 (802.3af) PD power level 13W DC/DC control PD and DC/DC Vin (max) (V) 75 Vin (min) (V) 1.8 PoE current limit (min) (mA) 300 PoE inrush limit (mA) (typ) (A) Programmable rDS(on) per FET (typ) (mΩ) 1000 Features Error amplifier, Programmable UVLO, Thermal shutdown Fault response Thermal Cycling Operating temperature range (°C) -40 to 125 Rating Catalog
PoE standards supported 802.3at Type 1 (802.3af) PD power level 13W DC/DC control PD and DC/DC Vin (max) (V) 75 Vin (min) (V) 1.8 PoE current limit (min) (mA) 300 PoE inrush limit (mA) (typ) (A) Programmable rDS(on) per FET (typ) (mΩ) 1000 Features Error amplifier, Programmable UVLO, Thermal shutdown Fault response Thermal Cycling Operating temperature range (°C) -40 to 125 Rating Catalog
TSSOP (PW) 16 32 mm² (5 mm × 6.4 mm) WSON (NHQ) 16 25 mm² (5 mm × 5 mm)
  • Fully Compliant 802.3af Power Interface Port
  • 80V, 1Ω, 400 mA Internal MOSFET
  • Programmable Inrush Current Limit
  • Detection Resistor Disconnect Function
  • Programmable Classification Current
  • Programmable Under-voltage Lockout with Programmable Hysteresis
  • Thermal Shutdown Protection
  • Current Mode Pulse Width Modulator
  • Supports Both Isolated and Non-Isolated Applications
  • Error Amplifier and Reference for Non-Isolated Applications
  • Programmable Oscillator Frequency
  • Programmable Soft-Start
  • 80% Maximum Duty Cycle Limiter, Slope Compensation (-80 device)
  • 50% Maximum Duty Cycle Limiter, No Slope Compensation (-50 device)
  • 800 mA Peak Gate Driver

Packages

  • TSSOP-16
  • WSON-16 (5 mm x 5 mm)

All trademarks are the property of their respective owners.

  • Fully Compliant 802.3af Power Interface Port
  • 80V, 1Ω, 400 mA Internal MOSFET
  • Programmable Inrush Current Limit
  • Detection Resistor Disconnect Function
  • Programmable Classification Current
  • Programmable Under-voltage Lockout with Programmable Hysteresis
  • Thermal Shutdown Protection
  • Current Mode Pulse Width Modulator
  • Supports Both Isolated and Non-Isolated Applications
  • Error Amplifier and Reference for Non-Isolated Applications
  • Programmable Oscillator Frequency
  • Programmable Soft-Start
  • 80% Maximum Duty Cycle Limiter, Slope Compensation (-80 device)
  • 50% Maximum Duty Cycle Limiter, No Slope Compensation (-50 device)
  • 800 mA Peak Gate Driver

Packages

  • TSSOP-16
  • WSON-16 (5 mm x 5 mm)

All trademarks are the property of their respective owners.

The LM5070 power interface port and pulse width modulation (PWM) controller provides a complete integrated solution for Powered Devices (PD) that connect into Power over Ethernet (PoE) systems. The LM5070 integrates an 80V, 400mA line connection switch and associated control for a fully IEEE 802.3af compliant interface with a full featured current mode pulse width modulator dc-dc converter. All power sequencing requirements between the controller interface and switch mode power supply (SMPS) are integrated into the IC. Two options are available providing either an 80% maximum duty cycle limit with slope compensation (on the –80 suffix) device or a 50% maximum duty cycle limit and no slope compensation on the (–50 suffix) device.

The LM5070 power interface port and pulse width modulation (PWM) controller provides a complete integrated solution for Powered Devices (PD) that connect into Power over Ethernet (PoE) systems. The LM5070 integrates an 80V, 400mA line connection switch and associated control for a fully IEEE 802.3af compliant interface with a full featured current mode pulse width modulator dc-dc converter. All power sequencing requirements between the controller interface and switch mode power supply (SMPS) are integrated into the IC. Two options are available providing either an 80% maximum duty cycle limit with slope compensation (on the –80 suffix) device or a 50% maximum duty cycle limit and no slope compensation on the (–50 suffix) device.

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TPS23753A ACTIVO Interfaz de PoE IEEE 802.3-2005 y controlador de convertidor aislado con paso a través de ESD mejora This product integrates the PD & PWM controller and provides more robust protection from unexpected voltage transients (rated to 100V).

Documentación técnica

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Documentación principal Tipo Título Opciones de formato Descargar la versión más reciente en inglés Fecha
* Hoja de datos LM5070 Integrated Power Over Ethernet PD Interface and PWM Controller datasheet (Rev. G) 29/03/2013
Guía de selección Power Management Guide 2018 (Rev. R) 25/06/2018
Guía del usuario AN-1358 LM5070 (Rev. A) 6/05/2013
Guía del usuario AN-1346 LM5070 (Rev. C) 6/05/2013

Diseño y desarrollo

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Encapsulado Pines Símbolos CAD, huellas y modelos 3D
TSSOP (PW) 16 Ultra Librarian
WSON (NHQ) 16 Ultra Librarian

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