TC1303C-ZI0EUN

Overview

The TC1303C-ZI0EUN 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) 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 incorporates automatic transition from PWM to PFM modes for efficiency optimization. The component is housed in a 10-pin MSOP package.

Feature Summary

• Dual-output architecture combining a high-current synchronous buck converter with a dedicated LDO regulator
• Integrated power-good output signal providing system status indication with configurable delay
• Independent shutdown controls allowing separate management of the buck and LDO outputs
• Internal compensation for both regulators simplifying external component requirements

Applications

• Portable consumer electronics requiring multiple regulated voltage rails
• Battery-powered devices utilizing single-cell lithium-ion or lithium-polymer sources
• Embedded systems needing efficient step-down conversion alongside stable analog supply
• Industrial control modules operating on standard 3.3 V logic levels

Procurement Notes

Verify the specific suffix code against official Microchip documentation to confirm the exact output voltage configuration and package variant. Ensure compatibility with RoHS standards and lead-free manufacturing processes as specified in the datasheet. Cross-reference the part number with authorized distributors to validate authenticity and traceability before procurement.

Selection Notes

Select this component when designing circuits that require simultaneous regulation of digital logic and analog peripherals from a single input source. Consider the total quiescent current and thermal performance under expected load conditions. Verify that the required output voltages align with the available fixed options or adjustable ranges supported by the specific suffix designation.

Part Context

This part belongs to the TC1303 family of dual-output regulators, which also includes variants like TC1303A, TC1303B, and TC1304. These components share similar architectural features but may differ in output current capabilities, fixed voltage options, or package types. The TC1303 series is designed for space-constrained applications demanding high efficiency and minimal external component count.

Replacement Considerations

Direct substitutes include other TC1303 variants such as TC1303C-NN2EUN or TC1303C-UG2EUN, provided they match the required output voltage and package type. Verify pin compatibility and electrical specifications before substitution.