TC1303A-ZP0EMFTR

Overview

The TC1303A-ZP0EMFTR 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. The device operates within an input voltage range of 2.7 V to 5.5 V, with a nominal rating of 3.6 V. It utilizes current-mode control and pulse width modulation (PWM) techniques, supporting a fixed switching frequency of 2.0 MHz for the buck converter under heavy loads. The component transitions automatically from PWM to pulse frequency modulation (PFM) mode to optimize efficiency at light loads. It is housed in a compact 10-pin DFN package measuring 3 mm x 3 mm with a height of 0.9 mm.

Feature Summary

• Integrates a high-efficiency synchronous buck regulator and a low-noise LDO within 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.
• Features automatic transition between PWM and PFM modes to maintain high efficiency across varying load conditions.

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 logic and analog supply rails

Procurement Notes

Verify the specific suffix code against official Microchip documentation to confirm the exact output voltage configuration, as the base part number covers multiple variants. Ensure compatibility with RoHS standards and lead-free manufacturing processes required for your assembly line. Cross-reference the tape-and-reel specifications if automated placement is planned.

Selection Notes

Select this component when space constraints necessitate a combined switching and linear regulation solution. It is suitable for applications requiring independent control of power rails and precise monitoring via the power-good pin. Consider the thermal performance of the DFN package relative to the expected ambient temperature and load current.

Part Context

This part belongs to the TC1303 family of dual-output regulators, which also includes variants like TC1303B, TC1303C, and TC1304. These components share similar architectural features but may differ in output voltage options, packaging, or specific electrical characteristics. The ZP0 suffix typically denotes a specific fixed output voltage combination for the buck and LDO channels.

Replacement Considerations

Direct replacements include other members of the TC1303 series such as TC1303A-CD3EMFTR or TC1303A-EK3EMFTR, provided the output voltage requirements match. Verify that any substitute maintains the same 10-pin DFN footprint and pinout configuration to ensure board compatibility.