TC1303A-ZI0EMFTR

Overview

The TC1303A-ZI0EMFTR is a dual-output power management IC manufactured by Microchip Technology. It integrates a 500 mA synchronous buck regulator and a 300 mA low-dropout (LDO) linear regulator within a single DFN-10 package measuring 3 x 3 mm with a height of 0.9 mm. The device operates on an input voltage range from 2.7 V to 5.5 V, with a nominal input of 3.6 V. The synchronous buck section utilizes current-mode control with a fixed switching frequency of 2.0 MHz under heavy load conditions. It features automatic transition between pulse width modulation and pulse frequency modulation modes. The LDO output provides standard fixed voltages including 1.5 V, 1.8 V, 2.5 V, and 3.3 V.

Feature Summary

• Integrates a high-efficiency synchronous buck converter and a low-noise LDO in a compact footprint
• Features independent shutdown controls for both the buck and LDO outputs to optimize system power consumption
• Includes a power-good monitoring function with a configurable delay to ensure stable startup sequencing
• Both regulator outputs are internally compensated to simplify external component selection

Applications

• Portable battery-powered consumer electronics requiring efficient dual-rail power distribution
• Embedded systems utilizing microcontrollers that require separate logic and analog supply rails
• Industrial control modules needing reliable regulation within a limited board space
• IoT devices demanding low quiescent current operation to extend battery life

Procurement Notes

Verify the specific suffix code against official Microchip documentation to confirm the exact output voltage configuration and package variant. Ensure the ordering part number matches the required tape-and-reel specifications. Cross-reference the manufacturer's latest datasheet revision to confirm compliance with RoHS standards and environmental regulations before finalizing procurement orders.

Selection Notes

Select this component when a design requires two distinct regulated voltages from a single power source within a constrained area. The integrated nature reduces bill-of-materials count compared to discrete solutions. Consider the thermal performance of the DFN-10 package relative to the expected load currents. Verify that the internal compensation meets the stability requirements of the target application without additional external components.

Part Context

This part belongs to the TC1303 family of dual-output regulators designed for space-sensitive applications. It complements other variants like the TC1303B and TC1304 which may offer different current ratings or output configurations. The family targets markets requiring high integration and efficiency in portable and industrial equipment. Microchip provides comprehensive support materials including evaluation boards and reference designs for this series.

Replacement Considerations

Direct substitutes include other members of the TC1303 family such as TC1303A-CF3EMFTR or TC1303A-YL0EMFTR, provided they match the specific output voltage and pinout requirements. Verify functional equivalence regarding shutdown logic and power-good thresholds. Ensure any replacement maintains the same package dimensions and thermal characteristics for mechanical compatibility.