TC1304-ZS0EUNTR

Overview

The TC1304-ZS0EUNTR is a dual-output power management integrated circuit manufactured by Microchip Technology, housed in a 10-lead MSOP package. It integrates a 500 mA synchronous buck regulator and a 300 mA low-dropout (LDO) linear regulator. The device operates within an input voltage range of 2.7 V to 5.5 V and supports output voltages from 0.8 V to 4.5 V. Key electrical specifications include a typical quiescent current of 65 µA, a fixed switching frequency of 2.0 MHz for the buck converter, and an internal compensation design. It features independent shutdown controls for both outputs and includes a power-good signal with a 300 ms delay.

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
• Provides independent shutdown control for each output channel to manage power states
• Includes a power-good output indicator with a specified 300 ms delay for system monitoring

Applications

• Portable battery-powered consumer electronics requiring efficient dual-rail power
• Embedded systems needing simultaneous high-current switching and low-noise linear regulation
• Industrial control modules operating within standard 3.3 V or 5 V supply architectures

Procurement Notes

Verify the specific suffix code against the manufacturer datasheet to confirm output voltage configuration and pinout compatibility. Ensure that the MSOP-10 package dimensions align with the target PCB footprint. Confirm moisture sensitivity level handling requirements during assembly. Cross-reference the ordering part number with official Microchip documentation to avoid substitution errors due to minor suffix variations.

Selection Notes

Select this component when a design requires both high-efficiency switching regulation and precise linear regulation within limited board space. The internal compensation simplifies external component selection compared to non-compensated alternatives. Consider the 65 µA quiescent current for standby power budgets. Evaluate the 2.0 MHz switching frequency against electromagnetic interference constraints relative to sensitive analog sections of the circuit.

Part Context

This part belongs to the TC1303/TC1304 family of dual-output regulators designed for space-constrained applications. The series combines synchronous buck technology with LDO performance to reduce bill-of-materials count. The ZS0EUNTR suffix denotes a specific output voltage configuration and tape-and-reel packaging format suitable for automated surface-mount assembly processes.

Replacement Considerations

Consult the official Microchip TC1304 datasheet for direct cross-reference part numbers. Verify functional equivalence regarding output current ratings, input voltage ranges, and package thermal characteristics before substituting.