TC1303A-RI1EMFTR

Overview

The TC1303A-RI1EMFTR is a dual-output power management IC manufactured by Microchip Technology, featuring a 500 mA synchronous buck regulator and a 300 mA low-dropout (LDO) linear regulator. The device operates within an input voltage range of 2.7 V to 5.5 V, with a nominal rating of 3.6 V. It utilizes current-mode control with pulse width modulation (PWM) technology at a fixed switching frequency of 2.4 MHz maximum. The component is housed in a 10-pin DFN package measuring 3 mm x 3 mm with a height of 0.9 mm. Key electrical characteristics include a typical quiescent current of 65 µA and automatic transition from PWM to PFM mode for improved light-load efficiency.

Feature Summary

• Integrates a high-efficiency synchronous buck converter and a low-noise LDO within a single compact package
• Provides independent shutdown control for both the buck and LDO outputs to optimize system power consumption
• Includes a power-good output signal with a configurable delay to ensure stable sequencing during startup
• Features internal compensation for both regulators to minimize external component count and simplify design

Applications

• Portable consumer electronics requiring efficient multi-rail power distribution
• Battery-powered devices utilizing single-cell lithium-ion or lithium-polymer sources
• Embedded systems needing isolated regulation for digital logic and analog peripherals
• Industrial control modules operating on standard 3.3 V or 5 V bus architectures

Procurement Notes

Verify the specific suffix RI1EMFTR against official Microchip documentation to confirm the exact output voltage configuration and pin assignment. Ensure compatibility with RoHS and REACH regulations as indicated in the datasheet. Confirm that the DFN-10 package dimensions align with your PCB footprint requirements before finalizing procurement orders.

Selection Notes

Select this component when a design requires both high-current switching regulation and low-noise linear regulation in a minimal footprint. It is suitable for applications where independent output control and power-good monitoring are necessary. Consider the thermal performance of the DFN package relative to the expected load current and ambient temperature conditions.

Part Context

This part belongs to the TC1303/TC1304 family of dual-output regulators designed for space-constrained portable applications. The 'A' variant typically denotes specific output voltage options or tolerance levels compared to other family members. The series emphasizes high efficiency and low quiescent current to extend battery life in mobile devices.

Replacement Considerations

Consult Microchip's official cross-reference tools for verified substitutes. Potential alternatives may include other Microchip dual-regulator parts or comparable offerings from manufacturers like TI or Analog Devices, provided they match the pinout, voltage ranges, and thermal specifications.