TC1303A-ZS0EMFTR

Overview

The TC1303A-ZS0EMFTR is a dual-output power management IC manufactured by 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 and utilizes a 10-pin DFN-10 package measuring 3 mm x 3 mm with a height of 0.9 mm. The device incorporates current-mode control with pulse width modulation, supporting a maximum switching frequency of 2400 kHz. Key electrical characteristics include a typical quiescent current of 65 µA and automatic transition from PWM to PFM modes for optimized efficiency.

Feature Summary

• Integrates a high-efficiency synchronous buck converter and a low-noise LDO in a single compact package
• Provides independent shutdown controls for both the buck and LDO outputs to manage system power states
• Includes a power-good output signal with a configurable delay to indicate stable regulation status

Applications

• Portable consumer electronics requiring efficient multi-rail power distribution
• Battery-powered devices utilizing the integrated LDO for noise-sensitive analog circuits
• Embedded systems needing independent output control for peripheral power management

Procurement Notes

Verify the specific suffix code against official Microchip documentation to confirm the exact output voltage configuration, as variations exist within the TC1303A family. Ensure compatibility with RoHS standards and lead-free manufacturing processes required for your assembly line. Cross-reference the datasheet revision date to validate technical specifications before finalizing component selection.

Selection Notes

Select this component when space-constrained designs require both switched-mode and linear regulation capabilities. The internal compensation simplifies layout requirements compared to discrete solutions. Consider the fixed switching frequency and output voltage options to ensure alignment with electromagnetic interference constraints and target load requirements.

Part Context

This part belongs to the TC1303 series of dual-output regulators designed for portable applications. The series combines a step-down converter with an LDO to provide clean power rails efficiently. The ZS0 suffix typically denotes a specific fixed output voltage combination, distinguishing it from adjustable or other fixed-voltage variants within the same package footprint.

Replacement Considerations

Direct replacements may include TC1303A-EK3EMFTR or TC1303A-YL0EMFTR, provided their output voltage configurations match the design requirements. Verify pin-to-pin compatibility and thermal performance characteristics before substitution.