TC1303B-IA0EMFTR

Overview

The TC1303B-IA0EMFTR 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 within a single package. The device operates with an input voltage range of 2.7 V to 5.5 V, featuring a typical quiescent current of 65 µA. The synchronous buck converter utilizes a fixed 2.0 MHz PWM frequency for heavy loads and transitions automatically to PFM mode at light loads to enhance efficiency. The component is housed in a 10-pin DFN package measuring 3 mm by 3 mm.

Feature Summary

• Dual-output architecture combining a 500 mA synchronous buck converter and a 300 mA LDO
• Automatic transition from PWM to PFM operation modes for optimized efficiency across load conditions
• Integrated power-good output signal indicating valid regulation status
• Independent shutdown control capabilities for both the buck and LDO outputs

Applications

• Portable battery-powered electronic devices requiring multiple voltage rails
• Embedded systems utilizing microcontrollers or application processors
• Industrial control modules with strict space constraints
• Consumer electronics necessitating efficient power distribution networks

Procurement Notes

Verify the specific suffix code IA0 against official Microchip documentation to confirm the exact output voltage configuration before procurement. Ensure that the ordering part number matches the required tape-and-reel packaging specifications. Confirm compliance with RoHS directives and check the moisture sensitivity level requirements for surface-mount assembly processes.

Selection Notes

Select this component when a compact solution is needed to generate two distinct regulated voltages from a single supply rail. The internal compensation simplifies design implementation by reducing external component count. Consider the thermal performance of the exposed pad DFN package for high-current applications and ensure the input voltage remains within the specified operational limits.

Part Context

This part belongs to the TC1303 family of dual-output regulators designed for space-constrained applications. The series includes variants with different fixed output voltages and adjustable options. The TC1303B designation indicates specific electrical characteristics and output configurations compared to other members like the TC1303A or TC1303C. The family emphasizes high efficiency and low noise for sensitive analog and digital circuits.

Replacement Considerations

Direct substitutes include other TC1303B variants with identical pinouts but different output voltage settings, such as TC1303B-SA0EMFTR or TC1303B-QG1EMFTR. Verify that the alternative part number provides the necessary output voltage levels for the target application without requiring circuit modifications.