MP8124GD-Z

Overview

The MP8124GD-Z is a switching voltage regulator designed for satellite signal receiver and set-top box applications. It operates with an input voltage range of 8 V to 14 V and provides a single fixed output of 40 V. The device utilizes a QFN-14 package (14-VFQFN, 2x3 mm) for surface mount installation. Key electrical specifications include a switching frequency of 440 kHz, a load regulation of 25 mV, and a quiescent operating current of 12 mA. It supports a shutdown function and functions within a junction temperature range of -40°C to +125°C.

Feature Summary

• Integrated control regulator topology optimized for specific power supply requirements in satellite infrastructure.
• Capable of generating high-voltage outputs from standard automotive or industrial input ranges via internal conversion.
• Includes a dedicated shutdown pin for system-level power management and standby mode control.

Applications

• Satellite signal receiver systems
• Set-top box designs
• LNB power supply circuits

Procurement Notes

Verify the suffix 'Z' indicates RoHS compliance status as per manufacturer documentation. Confirm the QFN-14 package dimensions match PCB footprint requirements. Ensure the 40 V output aligns with downstream component ratings. Check datasheet for thermal pad connection guidelines to maintain reliability within the specified -40°C to +125°C operating range.

Selection Notes

Select this component when a fixed 40 V output is required from an 8 V to 14 V input source. The 440 kHz switching frequency offers a balance between efficiency and external component size. Consider the 12 mA operating current for standby power constraints. The QFN-14 package suits space-constrained designs requiring surface mount technology.

Part Context

This part belongs to the MP8124 series of specialized switching regulators manufactured by Monolithic Power Systems. It is categorized under PMIC - Power Management ICs, specifically as a Control Regulator. The device is distinct from general-purpose buck or boost converters due to its fixed high-voltage output configuration tailored for broadcast equipment.

Replacement Considerations

The MP8124GD-P is a variant of the same functional device available in Cut Tape packaging instead of Reel. Both share identical electrical characteristics and pinouts. Verify that the application design accommodates the specific packaging format required for assembly processes.