TC1303C-PA0EMF

Overview

The TC1303C-PA0EMF 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 typical nominal input of 3.6 V. The device utilizes current-mode control and pulse width modulation, 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

• 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
• Internally compensated design simplifying external component requirements for both regulation stages

Applications

• Portable electronic devices requiring efficient multi-rail power distribution
• Battery-powered systems utilizing single-cell lithium-ion or lithium-polymer sources
• Embedded applications needing simultaneous regulated logic and analog supply rails
• Space-constrained designs benefiting from compact dual-regulator integration

Procurement Notes

Verify the specific suffix code against official Microchip documentation to confirm the exact fixed output voltage configuration, as variations exist within the TC1303C family. Ensure compatibility with RoHS and lead-free manufacturing standards required for your assembly process. Cross-reference the package marking and pinout with the latest datasheet to prevent integration errors during PCB layout and sourcing.

Selection Notes

Select this component when a single solution is needed to generate two distinct regulated voltages from a single input source. It is suitable for designs prioritizing board space reduction over discrete regulator implementations. Consider the internal compensation and fixed switching frequency when evaluating filter requirements. Verify that the combined quiescent current and thermal performance meet the specific operational envelope of the target application.

Part Context

This part belongs to the TC1303/TC1304 series of dual-output regulators designed for portable electronics. The 'C' variant typically denotes specific electrical characteristics or temperature ranges within the product line. These components are engineered to replace multiple discrete regulators, offering improved efficiency and reduced bill of materials in compact consumer and industrial handheld devices.

Replacement Considerations

Consult Microchip's official cross-reference tools for verified substitutes. Ensure any replacement maintains the same dual-output topology, pinout compatibility, and regulatory compliance specifications.