LM5071 芯片基本上是一款直流/直流转换器集成电路，但同时也是一个可以连接用电设备的接口。这个设计的优点是可以精简不同 PoE 供电系统的设计，尤其适用于必须借助交流电适配器以便获得辅助电源供应的 PoE 供电系统。
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。
| Part Number | Package | Factory Lead Time | Budgetary Pricing | Std Pack Size |
Package Marking Format |
||||||
| Type | Pins | Spec. | MSL Rating |
Peak Reflow |
Weeks | Qty | Qty | $US each | |||
| LM5071EVAL | Power Over Ethernet PD Controller with Auxiliary Power Interface | Full production | 1+ | $123.00 | 1 | - | |||||
| 8 weeks | N/A | ||||||||||
| LM5071MT-50 | TSSOP | 16 | NOPB | 1 | 260 | Full production | 1K+ | $1.45 | rail of 92 |
NSUZXYTT 5071MT -50 |
|
| 12 weeks | 500 | ||||||||||
| LM5071MT-80 | TSSOP | 16 | NOPB | 1 | 260 | Full production | 1K+ | $1.45 | rail of 92 |
NSUZXYTT 5071MT -80 |
|
| 6 weeks | 2000 | ||||||||||
| LM5071MTX-50 | TSSOP | 16 | NOPB | 1 | 260 | Full production | 1K+ | $1.45 | reel of 2500 |
NSUZXYTT 5071MT -50 |
|
| 6 weeks | 7500 | ||||||||||
| LM5071MTX-80 | TSSOP | 16 | NOPB | 1 | 260 | Full production | 1K+ | $1.45 | reel of 2500 |
NSUZXYTT 5071MT -80 |
|
