TC1313-ZI0EUNTR

Overview

The TC1313-ZI0EUNTR is a dual-output power management IC from Microchip Technology, integrating a 500 mA synchronous buck regulator and a 300 mA Low-Dropout Regulator (LDO). It operates within an input voltage range of 2.7 V to 5.5 V. The buck output supports adjustable voltages from 0.8 V to 4.5 V or fixed settings including 2.5 V. The LDO provides a fixed 2.5 V output. Total quiescent current is typically 57 µA. The device features independent shutdown controls for both outputs and internal compensation. It is housed in a 10-pin MSOP package.

Feature Summary

• Integrates a 500 mA synchronous buck converter and a 300 mA LDO in a single compact package.
• Provides independent shutdown control for the buck and LDO outputs to manage power states.
• Features automatic transition between PWM and PFM modes for optimized efficiency across load conditions.
• Includes comprehensive protection mechanisms such as overtemperature and short-circuit protection.

Applications

• Cellular phones
• Portable computers
• USB-powered devices
• Handheld medical instruments

Procurement Notes

Verify the specific suffix 'ZI0' against the manufacturer's official datasheet to confirm the exact output voltage configuration and pinout compatibility. Ensure the MSOP-10 package variant matches the target PCB footprint. Confirm RoHS compliance status through the latest environmental declaration documents provided by Microchip Technology before finalizing procurement orders.

Selection Notes

Select this component when a system requires two distinct regulated rails from a single input source, specifically a lower core voltage and a higher bias voltage. The integrated design reduces external component count compared to discrete solutions. Consider the 57 µA quiescent current for battery-operated applications requiring extended standby life. Verify that the 2.7 V minimum input voltage aligns with the available supply rail under all operating conditions.

Part Context

The TC1313 series belongs to Microchip's PMIC portfolio designed for space-constrained portable electronics. This specific part combines switching regulation for high efficiency with linear regulation for low noise. The ZI0 suffix denotes a specific voltage configuration within the broader TC1313 family, which includes various fixed and adjustable output options packaged in DFN or MSOP formats.

Replacement Considerations

Direct substitutes include other TC1313 variants with compatible packages, such as TC1313-ML1EUNTR or TC1313-YD2EUNTR, provided their specific output voltage configurations match the circuit requirements. Cross-reference the pinout and thermal characteristics to ensure mechanical and electrical compatibility during replacement.