TC1303C-ZP0EMF

Overview

The TC1303C-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. The device utilizes current-mode control with pulse width modulation (PWM) for the switching regulator, which supports a fixed frequency of 2.0 MHz under heavy loads and transitions automatically to pulse frequency modulation (PFM) at light loads. The LDO output is adjustable from 0.8 V to 4.5 V. Total quiescent current is typically 65 µA. The component is housed in a 10-pin DFN package measuring 3 mm x 3 mm.

Feature Summary

• Dual-output architecture combining a high-efficiency synchronous buck converter with a low-noise LDO
• Automatic transition between PWM and PFM modes to optimize efficiency across varying load conditions
• Integrated power-good output signal indicating valid regulation status
• Independent shutdown controls for both the buck and LDO outputs to minimize standby consumption

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 high-current and low-noise supply rails
• Industrial handheld equipment requiring compact power management solutions

Procurement Notes

Verify the specific suffix code against official Microchip documentation to confirm output voltage settings and package variant. Ensure compatibility with RoHS and REACH regulations as indicated in the datasheet. Confirm that the ordering part number matches the required electrical characteristics and thermal performance specifications for your application design.

Selection Notes

Select this component when a compact solution is needed for generating two distinct regulated voltages from a single input source. The integrated compensation simplifies external component selection. Consider the thermal dissipation requirements of the DFN-10 package based on the expected load currents and ambient temperature conditions during operation.

Part Context

This part belongs to the TC1303/TC1304 family of dual-output regulators designed for space-constrained applications. The 'C' designation typically indicates specific output voltage configurations or manufacturing revisions within the series. These devices are engineered to replace discrete regulator combinations, reducing board area and assembly complexity while maintaining high efficiency standards.

Replacement Considerations

Direct replacements include other variants within the TC1303 family such as TC1303C-DP0EMF or TC1303C-PO2EMF, provided the output voltage configurations match the system requirements. Verify pin-to-pin compatibility and ensure that the replacement part supports the same input voltage range and current capabilities.