TC1303C-ZP0EUN

Overview

The TC1303C-ZP0EUN 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 package. 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 section supports fixed frequencies up to 2.4 MHz and includes automatic transition between PWM and PFM modes for optimized efficiency across load conditions. The LDO provides stable output with low noise characteristics.

Feature Summary

• Dual-output architecture combining a high-current synchronous buck converter with a dedicated low-dropout linear regulator
• Automatic switching between Pulse Width Modulation (PWM) and Pulse Frequency Modulation (PFM) modes to enhance light-load efficiency
• Integrated Power-Good output signal indicating valid regulation status with configurable delay timing
• Independent shutdown control capabilities allowing separate management of the buck and LDO outputs

Applications

• Portable electronic devices requiring efficient multi-rail power distribution
• Battery-powered systems needing extended operational life through optimized power management
• Embedded applications utilizing microcontrollers or digital signal processors with varying voltage requirements
• Industrial control modules operating within standard industrial temperature ranges

Procurement Notes

Verify the specific suffix code to confirm the exact output voltage configuration and packaging type, as these parameters vary significantly across the product family. Ensure compatibility with the target application's thermal requirements and input voltage constraints before finalizing procurement decisions. Cross-reference official datasheets for precise electrical specifications.

Selection Notes

Select this component when a compact solution is required to generate both higher current buck voltages and lower noise LDO rails from a single input source. Consider the internal compensation features which simplify external component selection. Evaluate the need for independent shutdown functionality and power-good signaling in the system design context.

Part Context

This part belongs to the TC1303 series, which offers versatile power management solutions for space-constrained designs. The series differentiates itself by combining switching and linear regulation technologies to address diverse load requirements efficiently. Variants within the family provide different output voltage options and packaging styles to suit various board layout constraints.

Replacement Considerations

Direct replacements must match the pinout, voltage ratings, and current capabilities. Verify that alternative parts support the same dual-output topology and regulatory compliance standards. Check for equivalent thermal performance and package dimensions to ensure mechanical compatibility.