LM5070 datasheet(1/17 Pages) NSC

tên linh kiện	LM5070

Giải thích chi tiết về linh kiện	Integrated Power Over Ethernet PD Interface and PWM Controller

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LM5070

Integrated Power Over Ethernet PD Interface and PWM

Controller

General Description

The LM5070 power interface port and pulse width modula-

tion (PWM) controller provides a complete integrated solu-

tion 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 in-

terface and switch mode power supply (SMPS) are inte-

grated 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.

Features

n

Fully Compliant 802.3af Power Interface Port

n

80V, 1

Ω, 400 mA Internal MOSFET

n

Programmable Inrush Current Limit

n

Detection Resistor Disconnect Function

n

Programmable Classification Current

n

Programmable Under-voltage Lockout with

Programmable Hysteresis

n

Thermal Shutdown Protection

n

Current Mode Pulse Width Modulator

n

Supports both Isolated and Non-Isolated Applications

n

Error Amplifier and Reference for Non-Isolated

Applications

n

Programmable Oscillator Frequency

n

Programmable Soft-start

n

80% Maximum Duty Cycle Limiter, Slope Compensation

(-80 device)

n

50% Maximum Duty Cycle Limiter, No Slope

Compensation (-50 device)

n

800 mA Peak Gate Driver

Packages

n

TSSOP-16

n

LLP-16 (5 mmx5mm)

20120001

December 2004

DS201200

www.national.com

Số phần tương tự - LM5070

nhà sản xuất	tên linh kiện	bảng dữ liệu	Giải thích chi tiết về linh kiện
Texas Instruments	LM5070	1Mb / 24P	LM5070 Integrated Power Over Ethernet PD Interface and PWM Controller
	LM5070	1Mb / 23P	Integrated Power Over Ethernet PD Interface and PWM Controller
	LM5070	1Mb / 24P	Integrated Power Over Ethernet PD Interface and PWM Controller
	LM5070	770Kb / 27P	LM5070 Integrated Power Over Ethernet PD Interface and PWM Controller REVISED APRIL 2013
	LM5070MTC-50	1Mb / 24P	LM5070 Integrated Power Over Ethernet PD Interface and PWM Controller

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Mô tả tương tự - LM5070

nhà sản xuất	tên linh kiện	bảng dữ liệu	Giải thích chi tiết về linh kiện
Maxim Integrated Produc...	MAX5940A	295Kb / 15P	IEEE 802.3af PD Interface Controller For Power-Over-Ethernet Rev 0; 10/03
National Semiconductor ...	LM5072	945Kb / 24P	Integrated 100V Power Over Ethernet PD Interface and PWM Controller with Aux Support
Linear Technology	LTC4257	263Kb / 20P	IEEE 802.3af PD Power over Ethernet Interface Controller
Maxim Integrated Produc...	MAX5940	248Kb / 15P	IEEE 802.3af PD Interface Controller For Power-Over-Ethernet Rev 2; 2/06
Texas Instruments	LM5070MTC-80	1Mb / 24P	LM5070 Integrated Power Over Ethernet PD Interface and PWM Controller
	LM5071	1Mb / 23P	Power Over Ethernet PD Controller with Auxiliary Power Interface
	LM5070	1Mb / 23P	Integrated Power Over Ethernet PD Interface and PWM Controller
Linear Technology	LTC4257	269Kb / 20P	IEEE 802.3af PD Power over Ethernet Interface Controller
Texas Instruments	LM5070	1Mb / 24P	Integrated Power Over Ethernet PD Interface and PWM Controller
Texas Instruments	LM5072	1Mb / 34P	Integrated 100V Power Over Ethernet PD Interface

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