TC1303B-AG0EUNTR

Overview

The TC1303B-AG0EUNTR 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. It operates within an input voltage range of 2.7 V to 5.5 V and features a typical total quiescent current of 65 µA. The device utilizes a 2.0 MHz fixed-frequency PWM control mode for the buck converter, which automatically transitions to PFM under light loads. It includes independent shutdown controls for both outputs, internally compensated loops, and a Power-Good output with a 300 ms delay. The component is housed in a 10-pin MSOP package.

Feature Summary

• Integrates a 500 mA synchronous buck regulator and a 300 mA LDO in a single compact package.
• Features automatic transition between PWM and PFM modes to optimize efficiency across varying load conditions.
• Provides independent shutdown capabilities for both the buck and LDO outputs.
• Includes a Power-Good signal output with a specified 300 ms delay for system monitoring.

Applications

• Portable consumer electronics requiring multiple regulated voltage rails
• Battery-powered devices needing efficient power conversion
• Embedded systems utilizing USB or single-cell battery inputs

Procurement Notes

Verify the specific suffix code against the manufacturer's official datasheet to confirm the exact output voltage configuration, as the base part number may support various fixed or adjustable voltage options. Ensure the required packaging format matches the available reel or cut-tape specifications. Confirm RoHS compliance status and lead times directly with authorized distributors prior to ordering.

Selection Notes

Select this component when a design requires two distinct regulated outputs from a single source with high efficiency and low noise. The integrated compensation simplifies layout compared to discrete solutions. Consider the thermal performance in the MSOP-10 package relative to the expected load current and ambient temperature constraints.

Part Context

This part belongs to the TC1303 series of dual-output regulators designed for space-constrained applications. The series combines switching and linear regulation technologies to provide flexible power distribution. The 'B' variant typically denotes specific electrical characteristics or pin configurations within the family, while the suffix indicates the output voltage setting and packaging type.

Replacement Considerations

Consult the official Microchip cross-reference documentation for verified substitute part numbers. Ensure any replacement maintains compatibility with the 10-pin MSOP footprint and meets the required input/output voltage and current specifications.

FAQ

Does the TC1303B-AG0EUNTR support independent control of its outputs?

Yes, the device features independent shutdown pins for both the buck regulator and the LDO, allowing separate control of each output.

What is the typical quiescent current consumption of this IC?

The total device quiescent current is typically 65 µA.