TC1303C-1I0EMFTR

Overview

The TC1303C-1I0EMFTR 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 (LDO) linear regulator within a single 10-pin DFN package measuring 3 x 3 mm with a height of 0.9 mm. The device operates from an input voltage range of 2.7 V to 5.5 V, with a nominal rating of 3.6 V. The switching regulator utilizes current-mode control with pulse width modulation at a fixed frequency of 2.4 MHz maximum. Key electrical characteristics include a typical total quiescent current of 65 µA and automatic transition between PWM and PFM modes for optimized efficiency across load conditions.

Feature Summary

• Dual-output architecture combining a high-efficiency synchronous buck converter with a low-noise LDO in a compact footprint
• Integrated power-good output signal providing system status indication with a configurable delay timer
• Independent shutdown control pins allowing separate management of the buck and LDO outputs to minimize standby consumption
• Internal compensation for both regulators simplifies external component selection and reduces board space requirements

Applications

• Portable consumer electronics requiring multiple regulated voltage rails from a single battery source
• Embedded systems utilizing microcontrollers that require distinct logic and analog supply voltages
• Battery-powered devices where extended operational life is critical due to low quiescent current consumption
• Industrial control modules needing reliable power regulation within a wide input voltage range

Procurement Notes

Verify the specific suffix code against official Microchip documentation to confirm the exact output voltage configuration, as alphanumeric codes define fixed or adjustable settings. Ensure the ordering part number matches the required tape-and-reel packaging format. Cross-reference the RoHS compliance status and lead times directly with authorized distributors or the manufacturer before finalizing procurement plans.

Selection Notes

Select this component when a design requires two independent regulated outputs from a single input rail without consuming excessive PCB area. The internal compensation eliminates the need for external feedback network optimization for stability. Consider the thermal performance of the DFN package relative to the expected load currents and ambient operating temperatures during the initial design phase.

Part Context

This part belongs to the TC1303 family of dual-output regulators, which also includes variants like the TC1303A, TC1303B, and TC1304. These devices share common architectural features such as the synchronous buck topology and integrated LDO. The specific model designation indicates the output voltage setting and package variant, distinguishing it from other members of the series that may offer different current ratings or pin configurations.

Replacement Considerations

Direct substitutes within the same family include TC1303A, TC1303B, and TC1304 variants, provided the output voltage specifications match the application requirements. Verify pin compatibility and thermal characteristics when swapping between these models to ensure seamless integration into existing designs.