The LM5070 is an integrated power interface port and pulse width modulation (PWM) controller for Powered Devices (PD) that connect into Power over Ethernet (PoE) systems. It 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.
The LM5070 integrates a Power‑over‑Ethernet (PoE) PD interface with a pulse‑width‑modulation (PWM) controller. It supports IEEE 802.3af‑compliant power delivery, offers programmable duty‑cycle control, and includes built‑in in‑rush current limiting and fault protection.
The datasheet provides pin descriptions, absolute maximum ratings, electrical characteristics, typical performance curves, and ordering information. The device is offered in 16‑lead TSSOP and SDA16A packages, with options for 0 % and 80 % duty‑cycle variants.
| Supply Voltage Range | 3.3 V to 60 V |
|---|---|
| Maximum Input Voltage | 80 V |
The LM5070 is rated for a maximum input voltage of 80 V.