TC1313-ZA0EUNTR

Overview

The TC1313-ZA0EUNTR is a dual-output power management IC from 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 buck converter supports adjustable output voltages from 0.8 V to 4.5 V or standard fixed outputs including 0.8 V, 1.2 V, 1.5 V, 1.8 V, 2.5 V, and 3.3 V. It utilizes a 2.0 MHz fixed-frequency PWM control scheme with automatic transition to PFM for improved light-load efficiency. The device achieves over 90% typical efficiency and includes independent shutdown controls for both outputs.

Feature Summary

• Integrates a high-efficiency synchronous buck regulator with a separate low-dropout linear regulator in a single package.
• Features automatic transition between PWM and PFM control modes to optimize efficiency across varying load conditions.
• Provides independent shutdown capabilities for the buck and LDO outputs to manage power consumption effectively.
• Includes internal compensation for both regulators to simplify external component selection and design.

Applications

• Portable consumer electronics requiring efficient multi-rail power distribution
• Battery-powered devices needing extended operational time through optimized power management
• Embedded systems utilizing microcontrollers that require stable logic and analog supply rails

Procurement Notes

Verify the specific suffix code ZA0 against official Microchip documentation to confirm the exact LDO output voltage configuration. Ensure the ordering part number matches the required package type and tape-and-reel specifications. Cross-reference the manufacturer's latest datasheet to validate pin compatibility and thermal requirements before finalizing procurement orders.

Selection Notes

Select this component when a compact solution is needed for generating two distinct voltage rails from a single input source. Consider the 500 mA buck current capability for primary loads and the 300 mA LDO for noise-sensitive circuits. Evaluate the total quiescent current impact on battery life and ensure the operating temperature range meets the application's environmental constraints.

Part Context

This part belongs to the TC1313 family of dual-output regulators designed by Microchip Technology. The family offers various configurations distinguished by suffix codes that define the fixed LDO output voltage. These ICs are categorized under PMICs and are intended for space-constrained applications requiring integrated switching and linear regulation capabilities.

Replacement Considerations

Direct substitutes within the same family include variants such as TC1313-ML1EUNTR, TC1313-YD2EUNTR, and TC1313-VE0EUNTR. These alternatives share identical electrical characteristics and pinouts but differ in the fixed output voltage of the LDO section. Verify the specific voltage requirement of the target circuit before swapping part numbers.