TC1313-ZI0EMFTR

Overview

The TC1313-ZI0EMFTR is a dual-output power management IC from Microchip Technology, featuring 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 converter supports a fixed switching frequency of 2.0 MHz with adjustable output voltages between 0.8 V and 4.5 V. The LDO provides a fixed 2.5 V output. Total device quiescent current is typically 57 µA. The component is housed in a 10-lead DFN package measuring 3 mm x 3 mm.

Feature Summary

• Dual-output architecture combining a high-efficiency synchronous buck converter with a dedicated low-noise LDO for simultaneous power rail generation.
• Integrated automatic transition between Pulse Width Modulation (PWM) and Pulse Frequency Modulation (PFM) modes to optimize efficiency across varying load conditions.
• Independent shutdown control allows separate disabling of the buck and LDO outputs to minimize power consumption during standby states.
• Both regulator outputs are internally compensated, simplifying external component selection and reducing printed circuit board layout complexity.

Applications

• Portable consumer electronics requiring multiple stable voltage rails from a single battery source
• Embedded systems utilizing microcontrollers that need isolated noise-sensitive analog power supplies
• Battery-operated devices prioritizing extended operational life through low quiescent current operation

Procurement Notes

Verify the specific suffix against official Microchip documentation to confirm the fixed LDO output voltage matches system requirements. Ensure the ordering part number corresponds to the tape-and-reel packaging format indicated by the TR suffix. Cross-reference the RoHS compliance status and lead-free specifications with the manufacturer's latest datasheet before final procurement.

Selection Notes

Select this component when a compact solution is needed to generate both a programmable high-current rail and a fixed low-noise rail. Consider the 2.0 MHz switching frequency for smaller passive components compared to lower-frequency alternatives. Evaluate the thermal performance within the 3x3 mm DFN package based on the expected ambient temperature and total power dissipation of both regulators.

Part Context

This device belongs to the TC1313 family of dual-output regulators designed for space-constrained applications. It integrates power switches and control logic into a single small-footprint package. The family offers various fixed LDO output options alongside the adjustable buck converter to accommodate diverse voltage requirements without external resistors.

Replacement Considerations

Consult Microchip technical support or authorized distributors for verified cross-reference part numbers. Do not substitute with generic equivalents without confirming pin compatibility and electrical parameter alignment.

FAQ

What is the fixed output voltage of the LDO section in the TC1313-ZI0EMFTR?

The LDO section provides a fixed output voltage of 2.5 V.

How does the TC1313 manage efficiency at light loads?

The buck converter automatically transitions from PWM mode to PFM mode at light loads to improve efficiency.

Can the buck and LDO outputs be controlled independently?

Yes, the device features independent shutdown pins for the buck and LDO outputs.