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以太网供电 (PoE) IC
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LM5071

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具有反激式直流/直流控制器和 12V 至 57V 适配器优先级输入的 3 级 PoE PD

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LM5071

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PoE standards supported 802.3at Type 1 (802.3af) PD power level 13W DC/DC control PD and DC/DC Vin (max) (V) 60 Vin (min) (V) 1.8 PoE current limit (min) (mA) 390 PoE inrush limit (mA) (typ) (A) 0.1, 100 rDS(on) per FET (typ) (mΩ) 1000 Features Error Amplifier, Error amplifier, Primary Side Adapter Priority, Primary-side adapter priority, 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) 60 Vin (min) (V) 1.8 PoE current limit (min) (mA) 390 PoE inrush limit (mA) (typ) (A) 0.1, 100 rDS(on) per FET (typ) (mΩ) 1000 Features Error Amplifier, Error amplifier, Primary Side Adapter Priority, Primary-side adapter priority, 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)
  • Compatible with 12V AC Adapters
  • Fully Compliant 802.3af Power Interface Port
  • 80V, 1Ω, 400 mA Internal MOSFET
  • Detection Resistor Disconnect Function
  • Programmable Classification Current
  • Programmable Under-voltage Lockout with Programmable Hysteresis
  • Thermal Shutdown Protection
  • Auxiliary Power Enable Pin
  • 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)

Package

  • TSSOP-16

All trademarks are the property of their respective owners.

  • Compatible with 12V AC Adapters
  • Fully Compliant 802.3af Power Interface Port
  • 80V, 1Ω, 400 mA Internal MOSFET
  • Detection Resistor Disconnect Function
  • Programmable Classification Current
  • Programmable Under-voltage Lockout with Programmable Hysteresis
  • Thermal Shutdown Protection
  • Auxiliary Power Enable Pin
  • 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)

Package

  • TSSOP-16

All trademarks are the property of their respective owners.

The LM5071 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 LM5071 is specifically designed for the PD that must accept power from auxiliary sources such as AC adapters. The auxiliary power interface of the LM5071 activates the PWM controller when the ac adapter is connected to power the PD when PoE network power is unavailable. The LM5071 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.

The LM5071 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 LM5071 is specifically designed for the PD that must accept power from auxiliary sources such as AC adapters. The auxiliary power interface of the LM5071 activates the PWM controller when the ac adapter is connected to power the PD when PoE network power is unavailable. The LM5071 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.
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TPS23753A 正在供货 具有增强型 ESD 穿越功能的 IEEE 802.3-2005 PoE 接口和隔离转换器控制器 This product integrates the PD & PWM controller and provides more robust protection from unexpected voltage transients (rated to 100V).

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顶层文档 类型 标题 格式选项 下载最新的英语版本 日期
* 数据表 LM5071 Power Over Ethernet PD Controller with Auxiliary Power Interface 数据表 (Rev. E) 2013-3-29
选择指南 电源管理指南 2018 2018-7-31

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封装 引脚 CAD 符号、封装和 3D 模型
TSSOP (PW) 16 Ultra Librarian
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