TC1304-ZA0EUNTR

Overview

The TC1304-ZA0EUNTR is a dual-output power management IC from 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, with a nominal rating of 3.6 V. The device utilizes current-mode control with pulse width modulation (PWM) technology, supporting a maximum switching frequency of 2400 kHz. It is housed in a 10-pin MSOP-10 plastic package (MO-187). Key electrical characteristics include automatic transition from PWM to PFM mode for efficiency optimization and a total typical quiescent current of 65 µA.

Feature Summary

• Integrates a high-efficiency synchronous buck converter and a low-noise LDO in a single compact package
• Features automatic transition between PWM and PFM modes to optimize efficiency across varying load conditions
• Includes a power-good output signal with a defined delay to indicate stable regulation status

Applications

• Portable battery-powered consumer electronics requiring efficient dual-rail power distribution
• Embedded systems utilizing microprocessors or memory components needing clean analog and digital supply rails
• Industrial control modules operating within standard 3.3 V logic voltage domains

Procurement Notes

Verify the specific suffix ZA0 against official Microchip documentation to confirm the exact fixed output voltage configuration, as this determines compatibility with target load requirements. Ensure the ordering part number matches the required tape-and-reel packaging specifications. Cross-reference the manufacturing date code and lot traceability if strict quality assurance protocols are mandated for the production environment.

Selection Notes

Select this component when space-constrained designs require both switched-mode and linear regulation capabilities. It is suitable for applications demanding low output noise from the LDO alongside the high efficiency of the buck converter. Consider the internal compensation which simplifies external component selection compared to non-compensated alternatives. Evaluate the thermal performance within the MSOP-10 package relative to the expected ambient temperature and load current.

Part Context

This part belongs to the TC1303/TC1304 family of dual-output regulators. While the TC1303 variant offers independent shutdown controls for both outputs, the TC1304 series focuses on integrated operation without separate enable pins for each regulator. This family is designed to replace discrete regulator solutions, reducing board area and assembly complexity in portable electronic devices.

Replacement Considerations

Direct pin-compatible substitutes within the same family include TC1304-UA0EUNTR and TC1304-JG2EUNTR, provided their specific output voltage configurations match the design requirements. Verify that any replacement maintains the same MSOP-10 footprint and electrical ratings.