TC1303C-ZS0EUNTR

Overview

The TC1303C-ZS0EUNTR is a dual-output power management IC from Microchip Technology, featuring a 500 mA synchronous buck regulator and a 300 mA low-dropout (LDO) 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 and pulse width modulation, switching at a maximum frequency of 2400 kHz. It includes automatic transition between PWM and PFM modes for optimized efficiency. The component is housed in a 10-pin MSOP package.

Feature Summary

• Integrates a 500 mA synchronous buck converter and a 300 mA LDO regulator with independent shutdown capabilities
• Provides a power-good output signal with a specified delay time for system monitoring
• Features internal compensation for both outputs to simplify external component requirements
• Supports adjustable output voltages ranging from 0.8 V to 4.5 V alongside standard fixed options

Applications

• Portable battery-powered consumer electronics requiring efficient dual-rail power
• Embedded systems needing simultaneous high-current buck and low-noise LDO supplies
• Industrial control modules operating within the specified wide input voltage range

Procurement Notes

Verify the specific suffix ZS0EUNTR against official Microchip documentation to confirm the exact output voltage configuration, as this identifier typically denotes a fixed voltage variant. Ensure compatibility with the required MSOP-10 footprint and check for RoHS compliance status in the latest datasheet revision before finalizing procurement specifications.

Selection Notes

Select this component when a compact solution is needed for generating two distinct regulated rails from a single input source. The integrated power-good feature aids in system initialization sequencing. Consider the thermal performance of the MSOP-10 package relative to the expected load currents and ambient temperature conditions during design integration.

Part Context

This part belongs to the TC1303 family of dual-output regulators manufactured by Microchip Technology. The series combines a high-efficiency synchronous buck stage with a low-dropout linear regulator in a single small-outline package. This architecture reduces board space compared to using discrete components for each regulation function.

Replacement Considerations

Direct substitutes include other variants within the TC1303 family such as TC1303A or TC1303B, provided the output voltage settings match the application requirements. Cross-referencing pinouts and electrical characteristics with the specific replacement datasheet is essential to ensure functional equivalence.