LM5070MTC-80/NOPB

Overview

The LM5070MTC-80/NOPB is an integrated Power over Ethernet Powered Device (PD) interface and PWM controller designed for IEEE 802.3af compliance. It operates within a supply voltage range of 1.8 V to 75 V and supports a maximum duty cycle of 80%. The device features a maximum on-resistance of 2.2 Ohms and a current limit of 390 mA, delivering up to 12.95 W of output power. It functions reliably across an operating temperature range of -40°C to +125°C with a quiescent current of 1 mA. The component is housed in a TSSOP-16 surface-mount package.

Feature Summary

• Integrates PD interface logic with PWM control for simplified PoE powered device design
• Complies with IEEE 802.3af standards for power classification and detection
• Supports wide input voltage operation suitable for various PoE applications

Applications

• IEEE 802.3af compliant Powered Devices
• PoE-powered network equipment
• LAN interface power management systems

Procurement Notes

Verify the specific suffix configuration against the manufacturer's official datasheet to ensure compatibility with required pinouts and electrical characteristics. Confirm that the NOPB designation indicates lead-free composition and RoHS compliance as per current Texas Instruments documentation. Check for any recent product change notifications regarding package or material updates before finalizing procurement specifications.

Selection Notes

Select this component when designing systems requiring integrated PoE PD interface and DC/DC conversion control under IEEE 802.3af standards. Ensure the application voltage remains within the 1.8 V to 75 V operational range. Verify that the thermal requirements align with the specified -40°C to +125°C junction temperature limits and that the TSSOP-16 package fits the PCB layout constraints.

Part Context

This part belongs to the LM5070 series from Texas Instruments, which provides integrated solutions for Power over Ethernet applications. The series combines PD interface functionality with PWM controller capabilities to reduce component count in powered device designs. The LM5070MTC-80/NOPB specifically targets 802.3af compliant implementations with defined electrical parameters for current limiting and power delivery.

Replacement Considerations

LM5070MTC-80/NOPB.A

FAQ

What IEEE standard does the LM5070MTC-80/NOPB support?

It supports the IEEE 802.3af standard for Power over Ethernet.

What is the maximum operating voltage for this controller?

The maximum operating supply voltage is 75 V.