LM5070
- 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)
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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.
技术文档
| 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 | LM5070 Integrated Power Over Ethernet PD Interface and PWM Controller 数据表 (Rev. G) | 2013-3-29 | |||
| 选择指南 | 电源管理指南 2018 | 2018-7-31 | ||||
| 用户指南 | AN-1358 LM5070 (Rev. A) | 2013-5-6 | ||||
| 用户指南 | AN-1346 LM5070 (Rev. C) | 2013-5-6 | ||||
| 应用手册 | App Note 1408 Designing Pwr Over Ethernet Using LM5070 and DP83865 | 2011-11-23 | ||||
| 应用手册 | Application Note 1346 LM5070 "HE" Evaluation Board (cn) | 2006-3-13 |
设计与开发
如需其他信息或资源，请点击以下任一标题进入详情页面查看（如有）。
| 封装 | 引脚 | CAD 符号、封装和 3D 模型 |
|---|---|---|
| TSSOP (PW) | 16 | Ultra Librarian |
| WSON (NHQ) | 16 | Ultra Librarian |
订购和质量
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