TC1303B-SI0EMFTR

Overview

The TC1303B-SI0EMFTR 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 maximum frequency of 2400 kHz. It incorporates automatic transition from PWM to PFM modes for efficiency optimization. The component is housed in a 10-pin DFN package measuring 3 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 LDO regulator.
• Integrated power-good output signal providing system status indication with a defined delay period.
• Independent shutdown controls allow separate management of the buck and LDO outputs to conserve energy.
• Internally compensated design simplifies external component selection while maintaining stability.

Applications

• Portable consumer electronics requiring efficient multi-rail power distribution
• Battery-powered devices utilizing independent regulation for mixed-signal circuits
• Embedded systems needing compact power solutions with power-status monitoring

Procurement Notes

Verify the specific suffix code against official Microchip documentation to confirm the exact output voltage configuration. Ensure the ordering part number matches the required fixed or adjustable output settings. Confirm compliance with RoHS standards and lead times through authorized distributors before finalizing procurement plans.

Selection Notes

Select this component when a compact solution is needed for generating two distinct voltage rails from a single source. The internal compensation reduces design complexity compared to externally compensated alternatives. Consider the quiescent current specifications for battery life requirements and verify that the thermal performance of the DFN package suits the application's power dissipation needs.

Part Context

This part belongs to the TC1303 family of dual-output regulators manufactured by Microchip Technology. The series integrates a synchronous buck converter and an LDO into a single small-footprint package. Variations within the family typically differ by output voltage configurations and specific pin-out adaptations, sharing core control architectures and protection features.

Replacement Considerations

Consult official Microchip substitution guides for verified equivalents. Cross-referencing requires matching the dual-output topology, current ratings, and package dimensions to ensure functional compatibility without redesigning the PCB layout.