TC1303C-PA0EMFTR

Overview

The TC1303C-PA0EMFTR 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 is housed in a 10-pin DFN package measuring 3 x 3 mm with a height of 0.9 mm.

Feature Summary

• Integrates a 500 mA synchronous buck converter and a 300 mA LDO for efficient dual-rail power generation
• Provides a Power-Good output signal with a configurable 300 ms delay for system monitoring
• Supports independent shutdown controls for both the buck and LDO outputs to manage power states
• Features automatic transition between PWM and PFM modes to optimize efficiency across load conditions

Applications

• Portable consumer electronics requiring compact dual-voltage power solutions
• Battery-powered devices utilizing single-cell lithium-ion or lithium-polymer sources
• Embedded systems needing isolated regulation for digital logic and analog peripherals
• Industrial control modules operating within standard 3.3 V and 5 V supply rails

Procurement Notes

Verify the specific suffix PA0 against official Microchip documentation to confirm the exact fixed output voltage configuration. Ensure the ordering part number matches the required package variant and tape-and-reel specifications. Cross-reference the manufacturer's latest datasheet to confirm compliance with RoHS standards and lead-free requirements before finalizing procurement orders.

Selection Notes

Select this component when a compact solution is needed for generating two distinct regulated voltages from a single input source. It is suitable for designs prioritizing high efficiency under heavy loads due to the synchronous buck topology. Consider the internal compensation and fixed switching frequency if minimizing external component count is a priority. Verify that the required output voltages match the available fixed options or adjustable ranges specified in the datasheet.

Part Context

This part belongs to the TC1303 family of dual-output regulators designed for space-constrained applications. The series combines a high-current buck converter with an LDO to provide clean power for sensitive analog circuits alongside digital loads. The family is characterized by low quiescent current and integrated protection features, making it a common choice for modern portable electronic devices.

Replacement Considerations

Consult the Microchip TC1303A, TC1303B, and TC1304 datasheets for pin-compatible alternatives. These variants offer similar functionality but may differ in output voltage configurations or specific feature sets such as shutdown control availability.