TC1303C-1I0EMF

Overview

The TC1303C-1I0EMF is a dual-output power management IC from Microchip Technology, integrating 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. The synchronous buck converter supports a fixed switching frequency of 2.0 MHz and features automatic transition between PWM and PFM modes for optimized efficiency across load conditions. The device provides independent shutdown control for both outputs and includes a power-good output with a 300 ms delay. It is housed in a compact 10-pin DFN package measuring 3 mm x 3 mm.

Feature Summary

• Integrates a 500 mA synchronous buck regulator and a 300 mA LDO in a single package
• Features automatic transition between pulse width modulation and pulse frequency modulation modes
• Provides independent shutdown control for the buck and LDO outputs
• Includes a power-good signal output with a specified delay

Applications

• Portable battery-powered electronic devices requiring multiple voltage rails
• Embedded systems utilizing microcontrollers or digital logic
• Consumer electronics with space-constrained printed circuit board layouts

Procurement Notes

Verify the specific suffix codes against official Microchip documentation to confirm output voltage configurations and package variants. Ensure compatibility with required thermal dissipation standards for the DFN-10 footprint. Confirm RoHS compliance status through current datasheets before finalizing procurement specifications.

Selection Notes

Select this component when a compact solution is needed for generating two distinct regulated voltages from a single input source. Consider the 2.0 MHz switching frequency for minimizing external passive component size. Evaluate the quiescent current requirements against the typical 65 µA specification to ensure adequate battery life in portable applications.

Part Context

This part belongs to the TC1303 family of dual-output regulators. The series combines high-efficiency switching regulation with linear regulation capabilities. Variants within the family differ primarily in output voltage settings and package options while maintaining similar electrical characteristics and pinouts.

Replacement Considerations

Consult official Microchip cross-reference lists for verified substitutes. Ensure any replacement maintains the same pinout configuration and regulatory approvals.