MAX16550CGPN+

Specialized Overview

The MAX16550CGPN+ is an integrated protection IC designed for 12V power bus distribution, control, and monitoring. It features a monolithic N-channel MOSFET with a typical on-resistance of 1.9mΩ and supports up to 30A continuous load current. The device operates within a supply voltage range of 10.8V to 13.2V and includes an internal LDO providing a 1.8V bias supply. Key electrical parameters include a junction temperature range of 0°C to +125°C and a thermal resistance (junction-to-case) of 0.31°C/W. It utilizes lossless current sensing and provides three levels of overcurrent protection: moderate, severe, and safe.

Specialized Feature Summary

• Monolithic integration of power, control, and monitoring functions in a compact footprint.
• Patented lossless current sensing technology for high-accuracy reporting across load and temperature.
• PMBus/SMBus interface enabling advanced telemetry, status monitoring, and digital configuration.
• Programmable soft-start and delay mechanisms to limit inrush current during startup.

Specialized Applications

• Servers
• Networking equipment
• Storage systems
• Communication equipment
• AC/DC power supplies

Specialized Procurement Notes

Verify the specific suffix 'CGPN' against official documentation to confirm package type and temperature grade. Confirm RoHS compliance status as indicated by the '+' symbol. Ensure compatibility with existing PCB land patterns for the FCQFN-18 package before procurement.

Specialized Selection Notes

Select this component for applications requiring precise 12V rail protection with digital management capabilities. Consider the 1.9mΩ RDS(ON) for efficiency requirements and the 30A current rating for load capacity. Verify that the system controller supports PMBus or SMBus protocols for full feature utilization.

Specialized Part Context

The MAX16550 belongs to the MAX16550 series of integrated protection ICs from Analog Devices / Maxim Integrated. This series focuses on providing complete circuit-breaker solutions for 12V buses, combining low-resistance pass FETs with sophisticated fault detection and reporting logic.

Specialized Replacement Considerations

Consult official datasheets for direct pin-compatible alternatives within the same family. Verify functional equivalence regarding current ratings, protection thresholds, and interface protocols before substitution.

Specialized FAQ

How is the moderate overcurrent protection threshold programmed?

The moderate OCP threshold is analog programmable via the ROCP pin using a resistor connected to ground, allowing a range of approximately 15A to 35A.

What is the function of the ILOAD pin?

The ILOAD pin provides an analog output current representation proportional to the load current, requiring a properly sized resistor to ground for voltage conversion.

Does the device support hot-swap operations?

Yes, the integrated LDO bias supply and controlled soft-start ramp enable effective use in hot-swap applications without requiring an external bias supply.