TC1303B-RD1EMFTR

Overview

The TC1303B-RD1EMFTR is a dual-output power management IC from Microchip Technology, featuring a 500 mA synchronous buck regulator and a 300 mA low-dropout (LDO) regulator. It operates within an input voltage range of 2.7 V to 5.5 V, with a nominal rating of 3.6 V. The device utilizes current-mode control and pulse width modulation, switching at a fixed frequency of 2.0 MHz under heavy loads. It incorporates automatic transition between PWM and PFM modes for efficiency optimization. The component is housed in a 10-pin DFN package measuring 3 mm x 3 mm with a height of 0.9 mm.

Feature Summary

• Dual-output architecture combining a high-current synchronous buck converter with a dedicated low-dropout linear regulator.

Applications

• Portable electronic devices requiring efficient multi-rail power distribution
• Battery-powered systems utilizing the integrated shutdown capabilities
• Embedded applications needing low-noise power supplies for sensitive analog circuits

Procurement Notes

Verify the specific suffix RD1 against official Microchip documentation to confirm the exact output voltage configuration and pin assignment. Ensure compatibility with the required PCB footprint for the 3x3 mm DFN-10 package. Confirm RoHS compliance status through the manufacturer's latest datasheet before finalizing procurement specifications.

Selection Notes

Select this component when a compact solution is needed for generating two distinct regulated voltages from a single source. The internal compensation simplifies design by reducing external component count. Consider the quiescent current and shutdown features if battery life or system power management are critical constraints.

Part Context

This part belongs to the TC1303 family, which integrates a buck regulator and an LDO in a single small outline package. The 'B' variant typically denotes specific electrical characteristics or output configurations within the series. It is designed for space-constrained applications where board area and power efficiency are prioritized over discrete component solutions.

Replacement Considerations

Consult Microchip's official cross-reference tools for verified substitutes. Generic replacements may not match the specific output voltage settings or thermal performance of the TC1303B-RD1EMFTR.

FAQ

Does the TC1303B support independent control of its outputs?

Yes, the TC1303 variant allows for independent shutdown control of both the buck and LDO outputs.

What is the typical efficiency of the buck regulator section?

The synchronous buck regulator achieves over 90% typical efficiency under standard operating conditions.