R1294L103A-E2

Overview

The R1294L103A-E2 is a synchronous step-down DC/DC converter manufactured by Nisshinbo Micro Devices. It operates with an input voltage range of 2.5 V to 6 V and provides a single adjustable output voltage from 0.8 V to 5.5 V. The device supports a maximum output current of 3 A and features a switching frequency selectable between 1 MHz and 2 MHz. It includes integrated synchronous rectification for high efficiency, a shutdown function, and thermal protection. The component is housed in a compact QFN0404-24 package and is rated for operation within a temperature range of -40°C to +105°C.

Feature Summary

• Synchronous step-down topology with integrated power switches
• Adjustable output voltage via external resistor divider
• High switching frequency options for reduced passive size
• Built-in thermal shutdown and overcurrent protection

Applications

• Portable electronic devices requiring efficient power conversion
• Battery-powered systems with single-cell lithium-ion inputs
• Embedded applications needing compact power management solutions
• Industrial control modules operating within wide temperature ranges

Procurement Notes

Verify the specific suffix 'E2' against the manufacturer's official datasheet to confirm pinout compatibility and RoHS status. Ensure that the selected switching frequency configuration matches the application requirements for inductor selection. Confirm availability through authorized distributors as lead times may vary based on production schedules.

Selection Notes

Select this component when a 3 A output current capability is required within a small footprint. Consider the 1 MHz or 2 MHz switching frequencies based on available board space for passive components. Verify that the input voltage range aligns with the system's power source, particularly for single-cell battery applications. Ensure thermal design accounts for the QFN0404-24 package's heat dissipation characteristics.

Part Context

This part belongs to the R1294L series of synchronous buck converters designed for low-voltage, high-current applications. It is part of Nisshinbo's PMIC portfolio focused on energy-efficient power management for portable and industrial electronics. The series emphasizes compactness and high performance in a small form factor.

FAQ

What is the maximum output current rating?

The R1294L103A-E2 supports a maximum output current of 3 A.

Is the switching frequency fixed or adjustable?

The switching frequency is selectable between 1 MHz and 2 MHz using an external resistor.