TC1303B-PG0EUNTR

Overview

The TC1303B-PG0EUNTR 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. It operates within an input voltage range of 2.7 V to 5.5 V and delivers a typical quiescent current of 65 µA. The device utilizes a 2.0 MHz fixed-frequency PWM control mode for the buck converter, transitioning automatically to PFM mode under light loads. It includes a power-good output with a 300 ms delay and supports adjustable or standard fixed output voltages ranging from 0.8 V to 4.5 V.

Feature Summary

• Integrates a 500 mA synchronous buck regulator and a 300 mA LDO in a single package
• Provides independent shutdown control for both buck and LDO outputs
• Features automatic transition between PWM and PFM modes for optimized efficiency
• Includes a power-good signal output with a specified 300 ms delay

Applications

• Portable battery-powered consumer electronics
• Embedded systems requiring multiple regulated voltage rails
• Industrial control modules with space-constrained layouts
• Communication equipment utilizing single-supply architectures

Procurement Notes

Verify the specific suffix PG0EUNTR against official Microchip documentation to confirm pin configuration and output voltage settings. Ensure compliance with RoHS standards and check moisture sensitivity levels prior to surface-mount assembly. Confirm availability through authorized distributors as lead times may vary based on production schedules.

Selection Notes

Select this component when a compact solution combining high-current switching regulation and precise LDO performance is required. Consider the internal compensation and fixed switching frequency for simplified design implementation. Evaluate thermal requirements given the MSOP-10 package constraints and ensure input voltage ranges align with system power sources.

Part Context

This part belongs to the TC1303 family of dual-output regulators designed for efficient power management in portable applications. It complements similar models like the TC1303A and TC1303C, which offer variations in output configurations and packaging options while maintaining core regulatory features.

Replacement Considerations

Direct substitutes include other variants within the TC1303 series such as TC1303B-PK0EUNTR or TC1303B-VO0EUNTR, provided pin compatibility and output specifications match the design requirements.