TC1304-ZI0EMFTR

Overview

The TC1304-ZI0EMFTR is a dual-output power management IC from Microchip Technology, integrating 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. The buck section features a fixed 2.0 MHz switching frequency with automatic transition between PWM and PFM modes for optimized efficiency across load conditions. The device provides a power-good output with a 300 ms delay and maintains a typical total quiescent current of 65 µA. Both outputs are internally compensated, and the unit is housed in a compact 3 mm x 3 mm DFN-10 package.

Feature Summary

• Integrates a high-efficiency synchronous buck converter and a low-noise LDO in a single compact package
• Features automatic transition between pulse-width modulation and pulse-frequency modulation modes to optimize light-load efficiency
• Provides a delayed power-good signal to ensure stable system startup sequencing
• Includes independent shutdown control capabilities for both regulator outputs

Applications

• Portable consumer electronics requiring efficient multi-rail power distribution
• Battery-powered devices needing extended operational life through low quiescent current
• Embedded systems requiring clean power supplies for sensitive analog or RF circuits
• Mobile communication modules utilizing standard voltage rails

Procurement Notes

Verify the specific suffix against official Microchip documentation to confirm output voltage configurations and pin assignments. Ensure compatibility with required thermal dissipation standards for the DFN-10 package. Confirm that the 2.0 MHz switching frequency aligns with electromagnetic interference constraints in the target design environment.

Selection Notes

Select this component when space-constrained designs require both switching regulation efficiency and linear regulation noise performance. It is suitable for applications where input voltages vary between 2.7 V and 5.5 V. Consider the internal compensation for simplified external component selection compared to non-compensated alternatives.

Part Context

This part belongs to the TC1303/TC1304 family of dual-output regulators designed for portable applications. The series combines a synchronous buck converter with an LDO to provide multiple voltage rails from a single source. The TC1304 variant specifically offers fixed output options, distinguishing it from adjustable versions within the same family.

Replacement Considerations

Consult Microchip datasheets for direct pin-compatible substitutes within the TC1303/TC1304 series. Verify electrical parameters such as current ratings and switching frequencies before substituting with other manufacturers' dual-output regulators.