TC1303C-ZA0EMF

Overview

The TC1303C-ZA0EMF is a dual-output power management IC from Microchip Technology, integrating 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 LDO output provides a fixed 3.3 V supply with a typical quiescent current of 65 µA. The device features independent shutdown controls for both outputs and includes a power-good signal with a 300 ms delay. It is housed in a compact DFN-10 package suitable for space-constrained designs.

Feature Summary

• Integrates a high-efficiency synchronous buck converter and a low-noise LDO in a single package
• Provides independent shutdown control for the buck and LDO outputs to manage power states
• Includes a power-good output indicator with a specified delay time for system monitoring
• Features automatic transition between PWM and PFM modes to optimize efficiency across load conditions

Applications

• Portable electronic devices requiring efficient multi-rail power distribution
• Battery-powered systems utilizing the integrated shutdown capabilities
• Embedded applications needing simultaneous stable logic and analog power supplies
• Space-constrained circuit boards utilizing the compact DFN-10 footprint

Procurement Notes

Verify the specific suffix ZA0EMF against the manufacturer's official datasheet to confirm the fixed 3.3 V LDO output configuration. Ensure compatibility with the required DFN-10 thermal pad soldering process. Confirm RoHS compliance status through the latest production documentation before finalizing procurement orders.

Selection Notes

Select this component when a combined switching and linear regulation solution is required for dual-voltage rails. The fixed 3.3 V LDO output simplifies design compared to adjustable variants. Consider the 65 µA quiescent current for battery life calculations. Verify that the 500 mA buck current rating meets the peak load requirements of the target application.

Part Context

This part belongs to the TC1303/TC1304 family of dual-output regulators. The 'C' variant typically denotes specific electrical characteristics or temperature ranges within the series. The suffix indicates the fixed output voltage and packaging type. This family is designed to replace discrete regulator solutions, reducing component count and board area in modern portable electronics.

Replacement Considerations

Check for TC1303B or TC1303A variants if different output configurations are needed. Verify pin-to-pin compatibility with other Microchip dual-regulator parts. Ensure substitute components support the same DFN-10 package and thermal requirements.