TC1303C-ZP0EUNTR

Overview

The TC1303C-ZP0EUNTR 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 within a single MSOP-10 package. The device operates with an input voltage range of 2.7 V to 5.5 V. It features a power-good output signal with a 300 ms delay for system monitoring. The total quiescent current is typically 65 µA. The synchronous buck converter supports adjustable output voltages from 0.8 V to 4.5 V or standard fixed outputs, utilizing a 2.0 MHz fixed-frequency PWM control scheme that transitions automatically to PFM mode at light loads.

Feature Summary

• Integrates a 500 mA synchronous buck regulator and a 300 mA LDO in a single compact package
• Provides independent shutdown control for both the buck and LDO outputs
• Includes a power-good output indicator with a 300 ms delay for reliable system supervision
• Features automatic transition between PWM and PFM modes to optimize efficiency across load conditions

Applications

• Cellular phones and mobile communication devices
• Portable computers and handheld instruments
• USB-powered electronic devices
• Battery-operated consumer electronics requiring dual supply rails

Procurement Notes

Verify the specific suffix code against official Microchip documentation to confirm the exact output voltage configuration and pin compatibility. Ensure the ordering information matches the required package type and thermal characteristics. Confirm RoHS compliance status and lead-free specifications prior to procurement. Cross-reference the manufacturer part number with authorized distributors to ensure authenticity and traceability.

Selection Notes

Select this component when a design requires two distinct regulated voltage rails from a single power source within a limited board area. It is suitable for applications needing high efficiency from the switching regulator and low noise from the LDO. Consider the 2.0 MHz switching frequency for smaller external passive components. Evaluate the thermal performance requirements given the integrated nature of the regulators in the small outline package.

Part Context

This part belongs to the TC1303 family of dual-output regulators, which also includes variants like TC1303A, TC1303B, and TC1304. These devices share similar functional architectures but may differ in output configurations, package types, or specific electrical characteristics. The TC1303 series is designed to simplify power architecture by combining switching and linear regulation technologies into a unified solution for portable applications.

Replacement Considerations

Compatible alternatives within the same product line include TC1303A, TC1303B, and TC1303C variants with matching suffixes for identical output settings. Verify pin-to-pin compatibility and electrical parameter alignment before substitution. Consult the official datasheet for detailed comparison of thermal and electrical specifications.