ACT41000-104T

Voltage Regulators - Linear + Switching Overview

The ACT41000-104T is a specialized switching regulator manufactured by Qorvo, designed specifically for biasing Gallium Nitride (GaN) power amplifiers. Operating with an input voltage range of 4.5 V to 40 V, this buck topology device delivers a stable, adjustable output voltage up to 24 V at a maximum current of 4 A. It features a programmable switching frequency between 450 kHz and 2.25 MHz and maintains a low static current of 1.3 mA. The component supports an operating temperature range from -40°C to +125°C and is housed in a QFN-32 package.

Voltage Regulators - Linear + Switching Feature Summary

• Integrated power MOSFETs and current digital-to-analog converters enable precise detection of PA static drain current.
• Automated calibration sequence protects GaN devices by applying negative gate voltage prior to increasing drain bias.
• Configurable parameters allow optimization of output voltage, current limits, and protection thresholds via GUI.

Voltage Regulators - Linear + Switching Applications

• Biasing GaN power amplifiers in satellite communication systems
• RF infrastructure powering for 5G networks
• Radar system power management

Voltage Regulators - Linear + Switching Procurement Notes

Verify the specific suffix against official Qorvo documentation to confirm pinout and configuration compatibility. Confirm availability status as distribution channels may list limited stock or obsolete inventory. Ensure the procurement source provides valid RoHS compliance data and original manufacturer traceability before finalizing orders.

Voltage Regulators - Linear + Switching Selection Notes

Select this component when designing bias circuits for depletion-mode GaN FETs requiring strict sequencing protocols. Evaluate the 4 A output capability against peak PA drain current requirements. Consider the integrated MOSFETs and DACs if external sensing components are undesirable. Verify that the 4.5 V to 40 V input range matches the system's available supply rails.

Voltage Regulators - Linear + Switching Part Context

This part belongs to the ACT41000 series, a family of advanced power management ICs developed by Qorvo for RF applications. The series integrates control logic with power stages to simplify the complex biasing requirements of wide-bandgap semiconductors. It represents a shift toward highly integrated solutions that reduce board space and design complexity for high-performance RF transmitters.

Voltage Regulators - Linear + Switching Replacement Considerations

Publicly confirmed substitute part numbers are not available in the provided documentation. Consult Qorvo technical support for direct replacements or updated revisions within the ACT41000 family.