TC1303C-ZA0EMFTR

Overview

The TC1303C-ZA0EMFTR is a dual-output power management IC from Microchip Technology, featuring a 500 mA synchronous buck regulator and a 300 mA low-dropout (LDO) linear regulator. It operates within an input voltage range of 2.7 V to 5.5 V. The buck converter supports adjustable output voltages from 0.8 V to 4.5 V or standard fixed outputs including 3.3 V. The device utilizes current-mode control with pulse width modulation at a 2.0 MHz switching frequency. It includes a power-good output with a 300 ms delay and independent shutdown controls for both regulators.

Feature Summary

• Integrates a high-efficiency synchronous buck regulator and a low-noise LDO in a single compact package
• Provides independent shutdown capabilities for the buck and LDO outputs to optimize system power consumption
• Features automatic transition between PWM and PFM modes to maintain efficiency across varying load conditions
• Includes a power-good signal output with a configurable delay to ensure stable system sequencing

Applications

• Portable consumer electronics requiring efficient multi-rail power distribution
• Battery-powered devices needing extended runtime through optimized quiescent current management
• Embedded systems utilizing microcontrollers that require clean power supplies for sensitive analog sections
• Industrial control modules operating within standard 3.3 V or 5 V input ranges

Procurement Notes

Verify the specific suffix ZA0EMFTR against official Microchip documentation to confirm the exact output voltage configuration and packaging type. Ensure compatibility with RoHS standards and check for any recent obsolescence notices or lifecycle changes directly from the manufacturer before finalizing procurement plans.

Selection Notes

Select this component when a design requires two regulated rails from a single source without external compensation components. The internal compensation simplifies layout compared to non-internal variants. Consider the thermal performance of the DFN-10 package relative to the expected load current and ambient temperature constraints.

Part Context

This part belongs to the TC1303 family of dual-output regulators. Variants within this series differ primarily by their fixed output voltage settings or adjustment resistor configurations. The 'C' designation typically indicates specific electrical characteristics or revision levels defined by Microchip for this generation of PMICs.

Replacement Considerations

Direct replacements include other TC1303C variants with different output voltage suffixes if the voltage requirements change. Cross-referencing with TC1304 models may be necessary if higher current capacity is required, though pinouts and functionality must be verified.