TC1303B-DF0EMFTR

Overview

The TC1303B-DF0EMFTR 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 features a maximum switching frequency of 2400 kHz for the buck converter, with an input voltage range spanning from 2.7 V to 5.5 V. It utilizes a DFN-10 package measuring 3 x 3 mm with a height of 0.9 mm. The component includes a power-good output signal with a 300 ms delay and supports automatic transition between PWM and PFM modes.

Feature Summary

• Integrates a 500 mA synchronous buck regulator and a 300 mA LDO in a single package
• Provides a power-good output signal with a 300 ms delay
• Features automatic transition from PWM to PFM mode for efficiency optimization
• Includes independent shutdown controls for both buck and LDO outputs

Applications

• Portable battery-powered electronic devices
• Embedded systems requiring multiple regulated voltage rails
• Industrial control modules with space constraints
• Communication equipment power supplies

Procurement Notes

Verify the specific suffix DF0EMFTR against official Microchip documentation to confirm the exact output voltage configuration and pin assignment. Ensure that the DFN-10 package dimensions and thermal requirements align with the target PCB layout. Confirm compliance with RoHS standards and lead-free specifications as indicated in the manufacturer's datasheet before finalizing procurement orders.

Selection Notes

Select this component when a compact solution is required for generating two distinct voltage rails from a single input source. The internal compensation of both regulators simplifies design complexity. Consider the quiescent current characteristics and the need for independent shutdown capabilities when evaluating suitability for power-sensitive applications compared to non-integrated alternatives.

Part Context

This part belongs to the TC1303 family of dual-output regulators, which also includes variants like TC1303A, TC1303C, and TC1304. These components are designed to provide high efficiency and low noise in small form factors. The TC1303B specifically offers adjustable or fixed output options for the buck converter, catering to diverse voltage requirements in modern portable electronics.

Replacement Considerations

Direct substitutes include TC1303A-DF0EMFTR and TC1303C-DF0EMFTR, which share similar functional architectures but may differ in specific electrical parameters or temperature ranges. Cross-model replacements such as MCP1601 or MCP1602 offer comparable buck regulation but lack the integrated LDO feature.