TC1304-ZP0EUN

Overview

The TC1304-ZP0EUN is a dual-output power management IC from Microchip Technology, integrating a 500 mA synchronous buck regulator and a 300 mA low-dropout (LDO) linear regulator. It operates within an input voltage range of 2.7 V to 5.5 V. The buck converter supports adjustable output voltages from 0.8 V to 4.5 V or standard fixed outputs, featuring a 2.0 MHz switching frequency with automatic PWM to PFM transition for high efficiency. The LDO provides a typical dropout voltage of 137 mV at 200 mA. Total quiescent current is typically 65 µA. The device includes a Power-Good output with a 300 ms delay and is housed in a 10-pin MSOP package.

Feature Summary

• Integrates a 500 mA synchronous buck regulator and a 300 mA LDO in a single compact package
• Features automatic transition between PWM and PFM modes to optimize efficiency across load conditions
• Includes a Power-Good monitoring function with a configurable 300 ms delay
• Supports independent shutdown control for the buck and LDO outputs

Applications

• Portable consumer electronics requiring multiple regulated voltage rails
• USB-powered peripheral devices
• Handheld instruments and PDAs
• Embedded systems with strict space constraints

Procurement Notes

Verify the specific suffix code against the manufacturer's official datasheet to confirm the exact output voltage configuration and package variant. Ensure compatibility with the target PCB footprint, as the MSOP-10 package dimensions must match the design layout. Confirm that the operating temperature range meets the environmental requirements of the final application.

Selection Notes

Select this component when a design requires both high-efficiency switching regulation for higher current loads and low-noise linear regulation for sensitive analog circuits. The integrated Power-Good feature simplifies system sequencing and fault monitoring. Consider the thermal performance of the MSOP package if the ambient temperature approaches the maximum rated limit.

Part Context

The TC1304 belongs to a family of highly integrated power management solutions designed for portable applications. It combines switching and linear technologies to reduce component count and board area compared to discrete solutions. This integration addresses the need for efficient power delivery in battery-operated devices where size and power consumption are critical design parameters.

Replacement Considerations

Check for pin-compatible alternatives such as the TC1303 series if independent shutdown control is required. Verify that any substitute maintains the same 500 mA buck and 300 mA LDO current ratings and fits within the 2.7 V to 5.5 V input voltage window.