ACT43850-101SR

Overview

The ACT43850-101SR is a specialized power management IC designed for RF load point (RFPoL) applications. It functions as a synchronous buck DC-DC converter, stepping down voltage from the ACT43950 output to levels optimized for Qorvo GaN power amplifiers. The device features an input voltage range of 2.7V to 5.5V and utilizes a WLCSP-90 package. It supports SMD/SMT installation and operates within a temperature range up to +125°C.

Feature Summary

• Synchronous buck DC-DC conversion architecture
• Optimized stable voltage output for RF GaN power amplifiers
• Advanced configuration options for noise and EMI minimization

Applications

• Phased array radar systems
• RF load point power supply
• GaN power amplifier biasing

Procurement Notes

Verify the specific ordering suffix against official Qorvo documentation to confirm exact electrical characteristics and packaging details. Ensure compatibility with the system's thermal requirements and input voltage specifications before procurement.

Selection Notes

Select this component when designing power stages for Qorvo GaN PAs in phased array systems. It integrates directly with the ACT43950 controller to reduce passive component count and system volume while maintaining low noise performance critical for RF applications.

Part Context

Part of Qorvo's advanced three-chip power solution for phased array radar. Designed to work with ACT43950 and ACT43750 to optimize capacitor size and weight. Enables configurable GaN bias point calibration without board redesign.

Replacement Considerations

No public confirmed substitute part numbers are available. This component is part of a proprietary integrated solution; generic replacements may not support the required automatic calibration or RF optimization features.