TC1304-VI0EUN

Overview

The TC1304-VI0EUN 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 (LDO) within a single MSOP-10 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 supports adjustable output voltages from 0.8 V to 4.5 V or standard fixed outputs, utilizing a 2.0 MHz fixed-frequency PWM mode that transitions automatically to PFM for efficiency optimization. The LDO provides a fixed 1.2 V output. Both regulators are internally compensated and include independent shutdown controls.

Feature Summary

• Integrates a 500 mA synchronous buck regulator and a 300 mA low-dropout linear regulator in a compact footprint
• Features automatic transition between pulse width modulation and pulse frequency modulation modes for optimized efficiency across load conditions
• Includes a dedicated power-good output signal with a configurable delay timer for system monitoring
• Supports independent shutdown control for both the buck and LDO outputs to manage power states

Applications

• Portable electronic devices requiring multiple regulated voltage rails
• USB-powered equipment and peripherals
• Handheld medical instruments
• Personal digital assistants and mobile communication terminals

Procurement Notes

Verify the specific suffix code against the manufacturer's official datasheet to confirm the exact output voltage configuration and packaging variant. Ensure compatibility with the target application's thermal requirements and input voltage specifications before integration. Cross-reference the part number with authorized distributors to confirm authenticity and availability status.

Selection Notes

Select this component when a design requires a combined switching and linear regulation solution in a space-constrained environment. It is suitable for applications needing a high-current buck stage for main logic supplies and a low-noise LDO for sensitive analog circuits. Consider the internal compensation and fixed operating frequency to simplify external component selection and layout.

Part Context

This part belongs to the TC1303/TC1304 series of dual-output regulators designed for portable electronics. The series distinguishes itself by combining a synchronous buck converter with an LDO on a single die, offering a complete power management solution. The TC1304 variant specifically focuses on providing a robust buck regulator alongside a stable LDO, catering to systems with varying voltage and current demands.

Replacement Considerations

Direct replacements within the same family include TC1304-EN0EMFTR and TC1304-VK0EMF, which share identical electrical characteristics but utilize different DFN-10 packages. For MSOP-10 package equivalents with different fixed output voltages, consider variants such as TC1304-TA1EUN or TC1304-NC3EUN, ensuring the output voltage matches the system requirements.