TC1313-ZS0EUNTR

Overview

The TC1313-ZS0EUNTR is a dual-output power management IC from Microchip Technology, featuring a 500 mA synchronous buck regulator and a 300 mA low-dropout regulator (LDO). It operates within an input voltage range of 2.7 V to 5.5 V, with a typical quiescent current of 57 µA. The device utilizes pulse width modulation for the buck converter, offering over 90% efficiency and automatic transition to PFM mode. The LDO provides a fixed output voltage of 1.8 V. Both outputs are internally compensated and support independent shutdown control.

Feature Summary

• Dual-output architecture combining a 500 mA synchronous buck converter and a 300 mA LDO in a single package
• Independent shutdown capability allows separate control of the buck and LDO outputs to optimize system power consumption
• Integrated synchronous rectification ensures high efficiency across load conditions with automatic PWM-to-PFM mode transition
• Internal compensation simplifies design by eliminating the need for external loop compensation components

Applications

• Portable consumer electronics requiring efficient multi-rail power distribution
• Battery-powered devices needing extended operational time through low quiescent current operation
• Embedded systems utilizing microprocessors or application-specific integrated circuits with distinct voltage requirements

Procurement Notes

Verify the specific suffix code against official Microchip documentation to confirm the fixed LDO output voltage and package type. Ensure compatibility with RoHS standards and check moisture sensitivity levels for proper handling during assembly. Confirm that the ordering suffix matches the required electrical characteristics and physical dimensions for your PCB layout.

Selection Notes

Select this component when a compact solution is needed for generating two regulated voltages from a single supply rail. Consider the 500 mA buck current limit and 300 mA LDO capacity to ensure they meet the peak load requirements of the target circuit. Evaluate the thermal performance in the MSOP-10 package relative to the expected ambient operating temperature range.

Part Context

This part belongs to the TC1313 family of dual-output regulators designed for space-constrained applications. It integrates power switching elements and control logic to reduce board area compared to discrete solutions. The family offers various output voltage configurations to accommodate different standard logic levels and analog circuit requirements.

Replacement Considerations

Consult Microchip's official cross-reference data for verified substitutes. Ensure any replacement maintains the same pinout, voltage ratings, and current capabilities to avoid redesigning the power stage.