TC1303B-AG0EMF

Overview

The TC1303B-AG0EMF is a dual-output power management integrated circuit manufactured by Microchip Technology. It integrates a 500 mA synchronous buck regulator and a 300 mA low-dropout (LDO) linear regulator within a single 10-pin DFN package measuring 3 x 3 mm with a height of 0.9 mm. The device operates from an input voltage range of 2.7 V to 5.5 V, with a nominal rating of 3.6 V. The switching frequency for the buck converter is fixed at 2.0 MHz. The component supports automatic transition between Pulse Width Modulation (PWM) and Pulse Frequency Modulation (PFM) modes to optimize efficiency across varying load conditions.

Feature Summary

• Dual-output architecture combining a high-current synchronous buck converter with a dedicated low-dropout linear regulator
• Automatic mode transition capability that shifts between PWM and PFM operation based on load requirements
• Integrated power-good output signal providing system status indication with a defined delay period
• Independent shutdown control functionality allowing separate management of the buck and LDO outputs

Applications

• Portable electronic devices requiring efficient multi-rail power distribution
• Battery-powered systems utilizing both switching and linear regulation topologies
• Embedded applications needing compact surface-mount power solutions
• Industrial equipment operating within standard industrial temperature ranges

Procurement Notes

Verify the specific suffix code against official Microchip documentation to confirm the exact output voltage configuration and package variant. Ensure compatibility with the target PCB footprint dimensions and thermal requirements. Confirm RoHS compliance status and moisture sensitivity level prior to assembly planning. Cross-reference ordering information directly with manufacturer datasheets to avoid discrepancies in part identification.

Selection Notes

Select this component when a design requires simultaneous generation of two distinct voltage rails from a single input source. The integrated nature reduces board space compared to discrete solutions. Consider the 2.0 MHz switching frequency for minimizing external passive component sizes while maintaining acceptable noise levels. Evaluate the quiescent current specifications against standby power requirements for battery-operated applications.

Part Context

This part belongs to the TC1303 family of dual-output regulators produced by Microchip Technology. The series includes variants with different fixed output voltages and adjustable options. These components are designed for applications demanding high efficiency and small form factors. The family shares common internal compensation and protection features, ensuring consistent performance characteristics across different output configurations.

Replacement Considerations

Direct substitutes include other TC1303B variants with identical packaging but different output voltage settings, such as TC1303B-SA0EMF or TC1303B-SH0EMF. Verify that the replacement matches the required output voltage levels and current ratings for both the buck and LDO channels before implementation.