TC1304-ZI0EUNTR

Overview

The TC1304-ZI0EUNTR is a dual-output power management IC manufactured by Microchip Technology, featuring 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 and delivers a typical quiescent current of 65 µA. The device utilizes a 2.0 MHz fixed-frequency PWM control mode for the buck section, ensuring high efficiency exceeding 90% under heavy loads. It is housed in a compact MSOP-10 package with an operating temperature range from -40°C to +85°C.

Feature Summary

• Integrates a 500 mA synchronous buck converter and a 300 mA LDO in a single package
• Provides automatic transition between PWM and PFM modes for optimized light-load efficiency
• Includes a power-good output signal with a 300 ms delay for system monitoring
• Features independent shutdown controls for both the buck and LDO outputs

Applications

• Portable consumer electronics requiring efficient multi-rail power distribution
• Battery-powered devices needing extended operational life through low quiescent current
• Embedded systems utilizing microprocessors or application-specific integrated circuits
• Industrial control modules operating within standard voltage ranges

Procurement Notes

Verify the specific suffix code against official Microchip documentation to confirm output voltage configurations and pin compatibility. Ensure that the ordering quantity aligns with manufacturer reel specifications. Confirm RoHS compliance status and moisture sensitivity levels prior to assembly integration to prevent component damage during soldering processes.

Selection Notes

Select this component when a combined switching and linear regulation solution is required to minimize board space. Consider the 2.0 MHz switching frequency for applications prioritizing smaller external passive components. Evaluate the total quiescent current requirements against the 65 µA specification to ensure adequate battery life for portable designs.

Part Context

This part belongs to the TC1303/TC1304 family of dual-output regulators designed for space-constrained applications. The series distinguishes itself by combining high-efficiency synchronous buck technology with precise LDO regulation. Variants within the family typically differ by output voltage settings and specific feature enablements, all sharing the same core architecture and packaging.

Replacement Considerations

Consult official Microchip cross-reference lists for verified substitutes. Direct replacements must maintain identical pinout configurations and electrical characteristics. Generic equivalents may not support the specific PWM-to-PFM transition behavior or internal compensation schemes.