TC1303A-SI0EMF

Overview

The TC1303A-SI0EMF 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) linear regulator. The device operates within an input voltage range of 2.7 V to 5.5 V, with a nominal rating of 3.6 V. It utilizes current-mode control and pulse width modulation techniques, supporting a maximum switching frequency of 2400 kHz. The component is housed in a 10-pin DFN package measuring 3 x 3 mm with a height of 0.9 mm. Key electrical characteristics include a typical total quiescent current of 65 µA and automatic transition between PWM and PFM modes for optimized efficiency.

Feature Summary

• Integrates a high-efficiency synchronous buck converter and a low-noise LDO in a single compact package
• Provides independent shutdown controls for both the buck and LDO outputs to manage system power states
• Includes a power-good output signal with a configurable delay to indicate stable regulation status
• Features internal compensation for both regulators to simplify external component requirements

Applications

• Portable consumer electronics requiring multiple voltage rails from a single battery source
• Embedded systems utilizing microcontrollers that need isolated power domains
• Battery-operated devices prioritizing extended operational life through low quiescent current
• Industrial control modules requiring reliable voltage regulation in space-constrained enclosures

Procurement Notes

Verify the specific suffix code against the manufacturer's official documentation to confirm the exact output voltage configuration and packaging variant. Ensure compatibility with RoHS and REACH regulations if required by your supply chain standards. Cross-reference the part number with the latest datasheet revision to confirm pinout assignments and thermal pad specifications before finalizing procurement orders.

Selection Notes

Select this component when a design requires both high-current switching regulation and precise analog supply voltages within a limited board area. Consider the 2.7 V minimum input voltage for single-cell lithium-ion applications. Evaluate the thermal performance of the DFN package relative to the expected load current and ambient temperature conditions to ensure reliable operation without additional heatsinking.

Part Context

This part belongs to the TC1303 family of dual-output regulators designed for space-efficient power solutions. It complements other variants in the series that may offer different fixed output voltages or packaging options. The family is characterized by its ability to deliver significant current while maintaining low standby consumption, making it suitable for modern portable and industrial applications where power density is critical.

Replacement Considerations

Direct substitutes within the same family include TC1303A-ID3EMF, TC1303A-PS2EMF, TC1303A-HS0EMF, TC1303A-ZH0EMFTR, TC1303A-PO1EMF, TC1303A-RF0EMFTR, TC1303A-ZH3EMF, TC1303A-KH0EMF, TC1303A-IM0EMF, and TC1303A-PL0EMF. Verify that the alternative part number matches the required output voltage setting and package type before substitution.