TC1303A-ZP0EMF

Overview

The TC1303A-ZP0EMF 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 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 (PWM) technology and supports 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 mode for optimized efficiency under light loads.

Feature Summary

• Integrates a high-efficiency synchronous buck converter with a separate low-dropout linear regulator in a single compact package
• Provides independent shutdown control for both the buck and LDO outputs to manage system power states
• Includes a power-good output signal with a defined delay to indicate stable regulation status
• Supports flexible output configurations through adjustable feedback ranges or standard fixed-voltage selections

Applications

• Portable consumer electronics requiring efficient multi-rail power distribution
• Battery-powered devices utilizing single-cell lithium-ion or lithium-polymer sources
• Embedded systems needing simultaneous regulated rails for logic and analog components
• Industrial control modules operating within standard industrial temperature ranges

Procurement Notes

Verify the specific suffix code against official Microchip documentation to confirm the exact output voltage configuration and package variant. Ensure compatibility with required thermal dissipation standards for the target PCB layout. Confirm RoHS compliance and lead-free status requirements match project specifications before finalizing procurement orders.

Selection Notes

Select this component when a design requires a combined switching and linear regulation solution in a minimal footprint. Consider the 500 mA buck capacity for primary load handling and the 300 mA LDO for noise-sensitive circuits. Evaluate the 2.7 V minimum input requirement against the available supply rail to ensure proper operation across all expected conditions.

Part Context

This part belongs to the TC1303 family of dual-output regulators designed for space-constrained applications. It shares core architecture with variants like TC1303A-HS0EMF and TC1303A-ZH0EMF, differing primarily in output voltage settings and packaging options. The series targets applications demanding high efficiency and low standby current without sacrificing regulatory performance.

Replacement Considerations

Direct substitutes within the same family include TC1303A-HS0EMF and TC1303A-ZH0EMF, provided their specific output voltage codes match the design requirements. Verify pin-to-pin compatibility and thermal characteristics before swapping parts to ensure circuit stability.