A4492EESTR-T

Overview

The A4492EESTR-T is a triple output step-down switching regulator manufactured by Allegro MicroSystems. It operates as a synchronous buck converter with an input voltage range of 4.5 V to 34 V and adjustable outputs down to 0.8 V. The device features a fixed switching frequency of 550 kHz and is housed in a 20-WFQFN exposed pad package. It supports surface mount installation and functions within a temperature range of -40°C to +85°C.

Feature Summary

• Triple independent output channels for multi-rail power distribution
• Synchronous buck topology for high efficiency conversion
• Integrated control circuitry for stable regulation

Applications

• Multi-voltage embedded systems requiring three distinct regulated rails
• Industrial control units needing isolated or non-isolated DC-DC conversion
• Automotive electronics operating within standard voltage ranges

Procurement Notes

Verify the specific suffix 'EESTR-T' against the manufacturer's current datasheet to confirm pinout and electrical specifications match your design requirements. Check for any recent Product Change Notices (PCN) regarding packaging or material composition updates before finalizing procurement orders.

Selection Notes

Select this component when a single IC solution is required to generate three separate regulated voltages from a single input source. Ensure the total output current requirements across all three channels do not exceed the device's thermal limits. Verify that the 550 kHz switching frequency aligns with your system's electromagnetic interference constraints.

Part Context

This part belongs to the A4490 series of triple output regulators. It shares similar architectural features with the A4490 but may differ in specific electrical characteristics or internal configuration. It serves as a compact power management solution for applications requiring multiple voltage levels without using discrete components.

Replacement Considerations

Refer to the A4490EESTR-T for existing customer transition or new applications, as indicated in official Allegro documentation. Verify compatibility of pinouts and electrical parameters before substitution.