TC1303A-ZA0EMF

Overview

The TC1303A-ZA0EMF 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, with a typical quiescent current of 65 µA. The buck output supports adjustable voltages from 0.8 V to 4.5 V or standard fixed outputs, while the LDO provides fixed outputs such as 3.3 V. The device utilizes a DFN-10 package measuring 3 mm x 3 mm.

Feature Summary

• Integrates a high-efficiency synchronous buck converter and a low-noise LDO in a single compact package
• Provides independent shutdown control for both the buck and LDO outputs to optimize system power management
• Includes a power-good monitoring function with a configurable delay to ensure stable startup sequencing

Applications

• Portable consumer electronics requiring efficient multi-rail power distribution
• Embedded systems utilizing microcontrollers needing simultaneous core and I/O voltage generation
• Battery-powered devices where extended operational life is critical due to low quiescent current

Procurement Notes

Verify the specific suffix ZA0EMF against the official Microchip datasheet to confirm the exact output voltage configuration and package variant. Ensure compatibility with RoHS standards and check for any recent product lifecycle notices or obsolescence warnings before finalizing procurement plans.

Selection Notes

Select this component when a design requires both switching efficiency for higher current loads and low noise for sensitive analog sections. Consider the internal compensation and fixed operating frequency if minimizing external component count is a priority. Evaluate thermal performance within the DFN-10 footprint relative to the expected load conditions.

Part Context

This part belongs to the TC1303 family of dual-output regulators designed for space-constrained applications. It complements other variants like the TC1303B and TC1303C, which may differ in output voltage options or pin configurations. The family targets applications needing integrated power solutions without sacrificing board real estate.

FAQ

Does the TC1303A support independent shutdown of its outputs?

Yes, the device allows independent shutdown control for both the synchronous buck regulator and the LDO output.

What is the maximum input voltage for this regulator?

The maximum input voltage specified for the TC1303A series is 5.5 V.