TC1303B-SP0EMFTR

Overview

The TC1303B-SP0EMFTR is a dual-output power management IC manufactured by Microchip Technology, integrating a 500 mA synchronous buck regulator and a 300 mA low-dropout regulator (LDO). The device operates within an input voltage range of 2.7 V to 5.5 V, with a nominal rating of 3.6 V. It utilizes current-mode control with pulse width modulation at a fixed frequency of 2.0 MHz under heavy loads. The package is a 10-pin DFN measuring 3 mm x 3 mm with a height of 0.9 mm.

Feature Summary

• Integrates a 500 mA synchronous buck converter and a 300 mA LDO in a single compact package
• Features automatic transition from PWM to PFM mode for optimized efficiency across load conditions
• Includes a power-good output signal with a defined delay to indicate valid regulation
• Provides independent shutdown controls for both the buck and LDO outputs

Applications

• Portable battery-powered electronic devices requiring efficient dual-rail power
• Embedded systems utilizing microcontrollers needing stable logic and analog supply rails
• Consumer electronics where space-constrained PCB layouts demand small footprint regulators

Procurement Notes

Verify the specific suffix SP0EMFTR against official Microchip documentation to confirm the exact output voltage configuration and package variant. Ensure compatibility with RoHS standards and check moisture sensitivity levels prior to assembly. Confirm that the intended application voltage requirements align with the available fixed or adjustable options documented for this series.

Selection Notes

Select this component when a design requires simultaneous generation of two distinct voltage rails from a single input source. The integrated nature reduces external component count compared to discrete solutions. Consider the 2.0 MHz switching frequency for balancing electromagnetic interference and passive component size. Evaluate thermal performance within the 3x3 mm DFN package relative to expected load currents.

Part Context

This part belongs to the TC1303 family of dual-output regulators designed for high-efficiency power management. The series combines a synchronous buck topology with an LDO to provide clean power for digital and analog sections. The TC1303B variant specifically offers internal compensation and standard fixed output voltages alongside adjustable options, simplifying design implementation.

Replacement Considerations

Direct replacements include other TC1303B variants with different output voltage suffixes or package codes such as TC1303B-WG0EMFTR or TC1303B-HP3EMFTR, provided the electrical specifications match the system requirements.