TC1304-ZS0EUN

Overview

The TC1304-ZS0EUN 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 package. The device operates with an input voltage range of 2.7 V to 5.5 V. The adjustable buck output supports voltages from 800 mV to 4.5 V, while the LDO provides a fixed 1.5 V output. Total quiescent current is typically 65 µA. The component is housed in a DFN-10 surface-mount package.

Feature Summary

• Integrates a 500 mA synchronous buck converter and a 300 mA LDO for multi-rail power supply applications
• Features automatic transition between PWM and PFM modes to optimize efficiency across varying load conditions
• Includes a Power-Good monitoring function that indicates when regulated outputs are within specified tolerances

Applications

• Portable electronic devices requiring multiple voltage rails
• USB-powered equipment and peripherals
• Handheld instruments and mobile communication terminals

Procurement Notes

Verify the specific suffix ZS0EUN against the official datasheet to confirm the fixed 1.5 V LDO output configuration and DFN-10 packaging. Ensure compatibility with required thermal dissipation standards for the selected application environment. Confirm moisture sensitivity level handling procedures during assembly to prevent package damage.

Selection Notes

Select this component when a compact solution combining switching regulation and linear regulation is required. The fixed 1.5 V LDO output suits logic circuits or reference supplies. Verify that the 500 mA buck capacity meets the peak current demands of the primary load. Consider the DFN-10 footprint constraints relative to the PCB layout requirements.

Part Context

The TC1304 series belongs to Microchip's portfolio of highly integrated power management ICs designed for portable electronics. This family combines switching and linear technologies to reduce system component count. The TC1304 variant specifically targets applications needing efficient step-down conversion alongside stable linear regulation for sensitive analog or digital loads.

Replacement Considerations

TC1304-ZS0EMF: Identical electrical specifications and pinout but supplied in tube packaging instead of tape and reel.