TC1303B-PG0EUN

Overview

The TC1303B-PG0EUN 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 utilizes a 10-pin MSOP package. The device incorporates current-mode control with pulse width modulation for the buck section, supporting frequencies up to 2400 kHz. Key electrical characteristics include a typical quiescent current of 65 µA and automatic transition from PWM to PFM modes for improved light-load efficiency.

Feature Summary

• Integrates a high-efficiency synchronous buck converter with a separate low-dropout linear regulator in a single compact package.
• Provides a power-good output signal with a configurable delay to indicate stable regulation status.
• Supports independent shutdown control for both the buck and LDO outputs to minimize standby power consumption.
• Features internal compensation for both regulators, simplifying external component selection and board layout.

Applications

• Portable consumer electronics requiring multiple regulated voltage rails
• Battery-powered devices needing efficient step-down conversion and clean analog supply
• Embedded systems utilizing microcontrollers with distinct digital and analog power requirements

Procurement Notes

Verify the specific suffix code against the manufacturer's official datasheet to confirm the exact output voltage configuration and package variant. Ensure compatibility with industrial temperature ranges if operating conditions exceed standard commercial limits. Cross-reference the ordering part number with authorized distributors to confirm availability and authenticity before finalizing procurement plans.

Selection Notes

Select this component when a design requires both high-current switching regulation and low-noise linear regulation from a single source. Consider the fixed output voltage options or adjustable configurations available within the TC1303B family. Evaluate the thermal performance in the MSOP-10 package relative to the expected load current and ambient temperature constraints.

Part Context

This part belongs to the TC1303 series, which combines a synchronous buck regulator with an LDO. The series is designed for applications demanding space-saving solutions and high efficiency. Variants within the family differ primarily in fixed output voltages and package types, such as DFN or MSOP, while maintaining core functional similarities.

Replacement Considerations

Consult the official Microchip documentation for direct pin-to-pin compatible alternatives within the TC1303 family. Verify that substitute parts match the required output voltage and package dimensions. Ensure that any replacement maintains the same control architecture and thermal characteristics for seamless integration.