TC1304-ZI0EUN

Overview

The TC1304-ZI0EUN 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 adjustable buck output spans 0.8 V to 4.5 V, while the LDO provides fixed outputs including 2.5 V. Total quiescent current is typically 65 µA. The device features a power-good output with a 300 ms delay and automatic PWM-to-PFM mode transition for efficiency optimization. It is housed in a 10-pin MSOP package.

Feature Summary

• Integrates a 500 mA synchronous buck converter and a 300 mA LDO in a single compact package
• Features a power-good signal output that monitors regulation status with a defined delay
• Supports automatic transition between pulse-width modulation and pulse-frequency modulation modes
• Provides independent shutdown control capabilities for both the buck and LDO outputs

Applications

• Portable battery-powered consumer electronics requiring multiple voltage rails
• Embedded systems utilizing microprocessors or memory components
• Industrial control modules operating on single-cell lithium-ion batteries
• Communication equipment needing efficient step-down and stable linear regulation

Procurement Notes

Verify the specific suffix ZI0EUN against official Microchip documentation to confirm pinout compatibility and output voltage configurations. Ensure the procurement channel provides valid traceability for moisture sensitivity level handling. Confirm RoHS compliance status through the manufacturer's latest certification records before finalizing orders.

Selection Notes

Select this component when space-constrained designs require combined switching and linear regulation. The internal compensation simplifies external component selection compared to discrete solutions. Consider the 2.0 MHz switching frequency for minimizing passive component size while maintaining acceptable noise levels for sensitive analog circuits.

Part Context

This part belongs to the TC1303/TC1304 family of dual-output regulators. The TC1304 variant specifically combines a high-efficiency synchronous buck with an LDO. The MSOP-10 package allows for dense PCB layouts. The series is designed for applications demanding high efficiency and low standby current from portable devices.

Replacement Considerations

Check Microchip datasheets for cross-references such as TC1304 variants with different output voltages or packages. Verify functional equivalence regarding pin assignments and thermal characteristics before substituting.