A4402KLPTR-T

Voltage Regulators - Linear + Switching Overview

The A4402KLPTR-T is a dual-output power management IC from Allegro MicroSystems, integrating one switching buck converter and one low-dropout linear regulator. It operates within an input voltage range of 6V to 50V and features a 2MHz switching frequency. The buck output provides adjustable voltages between 3.3V and 5V with a maximum current of 1A, while the LDO output delivers adjustable voltages from 1.8V to 3.3V at up to 250mA. The device is housed in a 16-lead eTSSOP package with an exposed pad and supports operating temperatures from -40°C to 150°C.

Voltage Regulators - Linear + Switching Feature Summary

• Integrates a high-efficiency synchronous buck converter alongside a precision low-dropout linear regulator for combined switching and linear regulation capabilities.
• Features a fixed 2MHz switching frequency to enable the use of compact external components while maintaining stable operation across wide load ranges.
• Designed for automotive environments with extended temperature ratings and robust input voltage handling suitable for noisy power bus conditions.

Voltage Regulators - Linear + Switching Applications

• Automotive infotainment systems requiring multiple regulated voltage rails
• Instrument clusters and dashboard displays needing mixed regulation topologies
• Telematics control units demanding compact power solutions
• Body control modules with diverse voltage requirements

Voltage Regulators - Linear + Switching Procurement Notes

Verify the specific suffix KLPTR-T against the manufacturer datasheet to confirm the 16-eTSSOP-EP package configuration. Ensure compatibility with moisture sensitivity level 2 standards during storage and reflow soldering processes. Confirm that the ordering quantity aligns with the standard reel packaging requirements specified by Allegro MicroSystems for this component variant.

Voltage Regulators - Linear + Switching Selection Notes

Select this component when a design requires both efficient step-down conversion and clean linear regulation within a single footprint. The integrated topology reduces board space compared to discrete solutions. Verify that the required output currents for the buck and LDO channels fall within the 1A and 250mA limits respectively. Consider the 2MHz frequency impact on passive component selection for EMI compliance.

Voltage Regulators - Linear + Switching Part Context

This part belongs to the A4402 series of dual-output regulators designed for automotive applications. It combines switching and linear technologies to address complex power distribution needs in modern vehicles. The series is characterized by its ability to handle high input voltages typical of automotive battery systems while providing stable outputs for sensitive digital loads.

Voltage Regulators - Linear + Switching Replacement Considerations

Check for other variants within the A4402 family that may offer different pinouts or thermal characteristics. Verify if alternative packages such as LP-16 are functionally equivalent for the specific PCB layout constraints. Cross-reference electrical specifications to ensure the replacement meets the same input voltage and current delivery requirements.