TC1303B-PI0EMFTR

Overview

The TC1303B-PI0EMFTR 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 DFN-10 package measuring 3 x 3 mm with a height of 0.9 mm. The device operates on an input voltage range from 2.7 V to 5.5 V, with a nominal input of 3.6 V. The synchronous buck section utilizes current-mode control with pulse width modulation at a fixed frequency of 2.4 MHz maximum, featuring automatic transition to pulse frequency modulation for improved light-load efficiency.

Feature Summary

• Integrates a high-efficiency synchronous buck converter and a low-noise LDO in a compact footprint
• Features automatic mode transition between PWM and PFM to optimize efficiency across varying load conditions
• Includes a dedicated power-good output signal with a defined delay characteristic for system monitoring

Applications

• Portable battery-powered consumer electronics requiring efficient dual-rail power distribution
• Embedded systems utilizing microcontrollers needing simultaneous regulated logic and analog supply rails
• Industrial IoT devices requiring compact power solutions with independent shutdown capabilities

Procurement Notes

Verify the specific suffix code against the manufacturer datasheet to confirm the exact output voltage configuration and package variant. Ensure that the ordering information matches the required electrical specifications and thermal performance characteristics for the intended application environment. Cross-reference the component marking with official documentation to prevent substitution errors.

Selection Notes

Select this component when a design requires both switching regulation efficiency and LDO noise suppression within a limited board area. Consider the internal compensation which simplifies external component selection. Evaluate the quiescent current requirements and the need for independent output shutdown features relative to the system's power management strategy.

Part Context

This part belongs to the TC1303 family of dual-output regulators, which also includes variants like the TC1303A and TC1303C. These components are designed to replace discrete regulator combinations, reducing bill-of-materials count. The family shares common architectural features such as synchronous rectification and integrated protection mechanisms suitable for space-constrained designs.

Replacement Considerations

Direct replacements include other suffixes within the TC1303B series offering different fixed output voltages or adjustable configurations. Verify pin compatibility and thermal dissipation requirements when substituting with TC1303A or TC1303C variants.