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LM5070

現行

具可調式 UVLO 與返馳 DC-DC 控制器的 3 類 PoE PD

立即訂購
產品規格表

LM5070

現行
產品規格表 立即訂購

產品詳細資料

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 x 6.4 WSON (NHQ) 16 25 mm² 5 x 5
  • 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 現行 具強化 ESD 穿越功能的 IEEE 802.3-2005 PoE 介面和隔離式轉換控制器 This product integrates the PD & PWM controller and provides more robust protection from unexpected voltage transients (rated to 100V).

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類型 標題 日期
* Data sheet LM5070 Integrated Power Over Ethernet PD Interface and PWM Controller datasheet (Rev. G) 2013年 3月 29日
Selection guide Power Management Guide 2018 (Rev. R) 2018年 6月 25日
User guide AN-1346 LM5070 (Rev. C) 2013年 5月 6日
User guide AN-1358 LM5070 (Rev. A) 2013年 5月 6日

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TSSOP (PW) 16 Ultra Librarian
WSON (NHQ) 16 Ultra Librarian
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