TC1303B-PD0EMFTR

Overview

The TC1303B-PD0EMFTR 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 package. The device operates with an input voltage range of 2.7 V to 5.5 V, featuring a typical quiescent current of 65 µA. The synchronous buck converter utilizes current-mode control with a fixed switching frequency of 2.0 MHz under heavy loads and transitions automatically to pulse frequency modulation for improved light-load efficiency. The component is housed in a 10-lead DFN package measuring 3 mm x 3 mm.

Feature Summary

• Integrates a high-efficiency synchronous buck regulator and a separate LDO regulator in a compact footprint
• Features automatic transition between pulse width modulation and pulse frequency modulation modes
• Includes a power-good output signal with a defined delay time for system monitoring
• Provides independent shutdown controls for both the buck and LDO outputs

Applications

• Portable consumer electronics requiring multiple regulated voltage rails
• Battery-powered devices needing efficient step-down conversion
• Embedded systems utilizing microcontrollers or application processors
• Industrial control modules with strict space constraints

Procurement Notes

Verify the specific suffix code against official Microchip documentation to confirm the exact output voltage configuration and package variant. Ensure compatibility with RoHS standards and lead-free manufacturing processes as specified in the datasheet. Cross-reference the ordering part number with the manufacturer's latest release notes to account for any potential revisions or obsolescence notices.

Selection Notes

Select this component when a design requires two distinct regulated outputs from a single IC to minimize board space. Consider the 2.0 MHz switching frequency for applications prioritizing smaller external passive components. Evaluate the total quiescent current consumption against battery life requirements, noting the automatic mode transition benefits at light loads.

Part Context

This part belongs to the TC1303 family of dual-output regulators, which also includes variants like the TC1303A and TC1304. These devices are designed to replace discrete regulator solutions, offering higher integration levels. The family shares common architectural features such as internal compensation and current-mode control, ensuring consistent performance characteristics across different output configurations.

Replacement Considerations

Direct replacements include other members of the TC1303 series, such as TC1303A or TC1303C, provided the output voltage settings match the design requirements. Verify pin-to-pin compatibility and thermal performance before substitution.