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參數(shù)資料
| 型號： | LM5070MTCX-80 |
| 廠商： | NATIONAL SEMICONDUCTOR CORP |
| 元件分類： | 穩(wěn)壓器 |
| 英文描述： | Integrated Power Over Ethernet PD Interface and PWM Controller |
| 中文描述： | 0.8 A SWITCHING CONTROLLER, 665 kHz SWITCHING FREQ-MAX, PDSO16 |
| 封裝： | PLASTIC, TSSOP-16 |
| 文件頁數(shù)： | 1/17頁 |
| 文件大小： | 833K |
| 代理商： | LM5070MTCX-80 |
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
, 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 mm x 5 mm)
20120001
December 2004
L
2004 National Semiconductor Corporation
DS201200
www.national.com
相關(guān)PDF資料 |
PDF描述 |
|---|---|
| LM5070SD-50 | Integrated Power Over Ethernet PD Interface and PWM Controller |
| LM5070SD-80 | Integrated Power Over Ethernet PD Interface and PWM Controller |
| LM5070SDX-50 | Integrated Power Over Ethernet PD Interface and PWM Controller |
| LM5070SDX-80 | Integrated Power Over Ethernet PD Interface and PWM Controller |
| LM5071MT-50 | Power Over Ethernet PD Controller with Auxiliary Power Power Over Ethernet PD Controller with Auxiliary Power |
相關(guān)代理商/技術(shù)參數(shù) |
參數(shù)描述 |
|---|---|
| LM5070MTCX-80/NOPB | 功能描述:熱插拔功率分布 RoHS:否 制造商:Texas Instruments 產(chǎn)品:Controllers & Switches 電流限制: 電源電壓-最大:7 V 電源電壓-最小:- 0.3 V 工作溫度范圍: 功率耗散: 安裝風(fēng)格:SMD/SMT 封裝 / 箱體:MSOP-8 封裝:Tube |
| LM5070SD-50 | 制造商:Texas Instruments 功能描述:POE Controller 1.8V 75V 13W 16-Pin LLP EP |
| LM5070SD-50/NOPB | 功能描述:熱插拔功率分布 RoHS:否 制造商:Texas Instruments 產(chǎn)品:Controllers & Switches 電流限制: 電源電壓-最大:7 V 電源電壓-最小:- 0.3 V 工作溫度范圍: 功率耗散: 安裝風(fēng)格:SMD/SMT 封裝 / 箱體:MSOP-8 封裝:Tube |
| LM5070SD-80 | 功能描述:熱插拔功率分布 RoHS:否 制造商:Texas Instruments 產(chǎn)品:Controllers & Switches 電流限制: 電源電壓-最大:7 V 電源電壓-最小:- 0.3 V 工作溫度范圍: 功率耗散: 安裝風(fēng)格:SMD/SMT 封裝 / 箱體:MSOP-8 封裝:Tube |
| LM5070SD-80/NOPB | 功能描述:熱插拔功率分布 RoHS:否 制造商:Texas Instruments 產(chǎn)品:Controllers & Switches 電流限制: 電源電壓-最大:7 V 電源電壓-最小:- 0.3 V 工作溫度范圍: 功率耗散: 安裝風(fēng)格:SMD/SMT 封裝 / 箱體:MSOP-8 封裝:Tube |
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