TC1303B-ZP0EMFTR

Overview

The TC1303B-ZP0EMFTR 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 linear regulator (LDO). The device operates with an input voltage range of 2.7 V to 5.5 V. The synchronous buck converter features a fixed switching frequency of 2.0 MHz, delivering up to 500 mA output current. The LDO provides a fixed 2.6 V output at 300 mA. Both outputs are internally compensated and support independent shutdown control. The component includes a Power-Good output signal with a 300 ms delay. Total quiescent current is typically 65 µA. The device is housed in a 10-lead DFN package measuring 3 mm x 3 mm.

Feature Summary

• Integrates a 500 mA synchronous buck regulator and a 300 mA LDO in a single package
• Provides automatic transition between PWM and PFM modes for optimized efficiency
• Includes independent shutdown controls for both the buck and LDO outputs
• Features a Power-Good output signal indicating valid regulation status

Applications

• Portable battery-powered electronic devices requiring dual voltage rails
• Embedded systems utilizing microcontrollers or application processors
• Industrial control modules with strict power management requirements
• Communication equipment needing efficient step-down conversion and stable linear regulation

Procurement Notes

Verify the specific suffix ZP0 against official Microchip documentation to confirm the exact output voltage configuration for the LDO and buck sections. Ensure the ordering part number matches the required tape-and-reel packaging specifications. Confirm RoHS compliance status and moisture sensitivity level ratings prior to procurement to align with assembly process requirements.

Selection Notes

Select this component when a compact solution is needed for generating two distinct regulated voltages from a single input source. The 2.0 MHz switching frequency allows for smaller external passive components compared to lower-frequency alternatives. Consider the total quiescent current and shutdown capabilities for applications requiring extended battery life or precise power sequencing.

Part Context

This part belongs to the TC1303 family of dual-output regulators from Microchip Technology. The family combines a high-current synchronous buck converter with a standard LDO. Variants within the series differ primarily in fixed output voltages and package options. The TC1303B specifically denotes the version with integrated Power-Good monitoring and specific electrical characteristics defined in the datasheet.

Replacement Considerations

Direct substitutes include other TC1303B variants with different output voltage configurations, such as TC1303B-SH0EMFTR or TC1303B-ZG0EMFTR. Verify that the replacement part maintains the same 10-DFN footprint and pinout compatibility. Check if the alternative offers the required output voltages for both the buck and LDO channels.