LM5071
- 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
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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.
技术文档
类型 | 标题 | 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年 3月 29日 | |||
选择指南 | 电源管理指南 2018 (Rev. K) | 2018年 7月 31日 | ||||
选择指南 | 电源管理指南 2018 (Rev. R) | 2018年 6月 25日 | ||||
EVM 用户指南 | AN-1430 LM5071 Evaluation Board (Rev. B) | 2013年 5月 6日 | ||||
应用手册 | The LM507X Family of PoE Devices: Frequently Asked Questions (FAQs) (cn) | 2006年 5月 10日 |
设计和开发
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封装 | 引脚 | 下载 |
---|---|---|
TSSOP (PW) | 16 | 查看选项 |
订购和质量
- RoHS
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- 引脚镀层/焊球材料
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- MTBF/时基故障估算
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- 封装厂地点
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