TC1304-ZI0EMF

Overview

The TC1304-ZI0EMF 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 (PWM), supporting a maximum switching frequency of 2400 kHz. It incorporates automatic transition from PWM to PFM mode for efficiency optimization. The component is housed in a 10-pin DFN package measuring 3 mm x 3 mm with a height of 0.9 mm.

Feature Summary

• Integrates a high-efficiency synchronous buck converter and a low-noise LDO in a single compact package
• Provides a power-good output signal with a defined delay to indicate stable regulation status
• Features internal compensation for both outputs to simplify external component requirements
• Supports automatic mode transition between PWM and PFM to maintain efficiency across varying load conditions

Applications

• Portable consumer electronics requiring efficient multi-rail power distribution
• Battery-powered devices utilizing single-cell lithium-ion or lithium-polymer sources
• Embedded systems needing independent shutdown capabilities for power management
• Noise-sensitive analog circuits powered by the integrated LDO section

Procurement Notes

Verify the specific suffix code against official Microchip documentation to confirm pinout compatibility and output voltage configuration. Ensure the procurement source provides valid RoHS compliance certificates and material declarations. Cross-reference the manufacturing date code and lot traceability with the distributor's quality assurance records before finalizing orders.

Selection Notes

Select this component when a design requires both a high-current switching regulator and a clean LDO supply within a limited board area. Consider the 2.7 V minimum input voltage constraint relative to the battery discharge curve. Evaluate the thermal performance of the DFN-10 package against the expected ambient temperature and load current to ensure reliable operation without excessive heatsinking.

Part Context

This part belongs to the TC1303/TC1304 family of dual-output regulators designed for space-constrained applications. While sharing core architecture with variants like the TC1304-HS3EMF, the ZI0 suffix typically denotes specific output voltage settings or packaging variations. Engineers often choose this series to reduce bill-of-materials count by combining buck and LDO functions into one controller.

Replacement Considerations

Direct replacements include other members of the TC1303/TC1304 family such as TC1304-HS3EMF or TC1304-DQ0EMF, provided the output voltage configurations match the design requirements. Verify that alternative packages maintain the same thermal and electrical characteristics.