TC1304-ZA0EMFTR

Overview

The TC1304-ZA0EMFTR is a dual-output power management integrated circuit manufactured by Microchip Technology. It integrates a 500 mA synchronous buck regulator and a 300 mA low-dropout linear regulator (LDO) within a single DFN-10 package measuring 3 x 3 mm with a height of 0.9 mm. The device operates with an input voltage range from 2.7 V to 5.5 V, featuring a typical quiescent current of 65 µA. The buck converter supports adjustable output voltages between 0.8 V and 4.5 V or standard fixed outputs, while the LDO provides a fixed 3.3 V output. It includes a Power-Good signal with a 300 ms delay and functions across an operating temperature range of -40°C to +85°C.

Feature Summary

• Integrates a 500 mA synchronous buck regulator and a 300 mA low-dropout linear regulator in a compact footprint
• Provides a Power-Good output signal with a 300 ms delay for system monitoring
• Features automatic transition between pulse width modulation and pulse frequency modulation modes for optimized efficiency
• Includes internal compensation for both regulator outputs to simplify external component requirements

Applications

• Portable consumer electronics requiring multi-voltage power rails
• USB-powered peripheral devices
• Handheld medical instruments
• Personal digital assistants and mobile communication devices

Procurement Notes

Verify the specific suffix ZA0EMFTR against official Microchip documentation to confirm the exact output configuration and packaging variant. Ensure that the required thermal performance and electrical specifications align with the target application environment before finalizing procurement decisions.

Selection Notes

Select this component when a design requires a combined switching and linear regulation solution in a space-constrained layout. Consider the 500 mA buck capacity and 300 mA LDO capability alongside the 3.3 V fixed LDO output. Evaluate the need for the integrated Power-Good feature and the specific thermal characteristics of the DFN-10 package for the intended use case.

Part Context

This part belongs to the TC1303/TC1304 series of highly integrated power management ICs designed for portable applications. The series distinguishes itself by combining high-efficiency switching regulation with low-noise linear regulation on a single die. This integration reduces the overall bill of materials and board area compared to using discrete regulators, making it suitable for battery-operated systems.

Replacement Considerations

Check for direct substitutes such as the TC1304-ZA0EMF or other variants within the TC1304 family that may offer different output voltages or packaging options. Verify pin compatibility and electrical parameter equivalence before substituting.