TC1313-1P0EUN

Overview

The TC1313-1P0EUN 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 is adjustable from 0.8 V to 4.5 V, while the LDO provides a fixed 1.0 V output. Total quiescent current is typically 57 µA. The device supports independent shutdown for both outputs and features internal compensation. It is housed in a 10-pin MSOP package with an operating temperature range of -40°C to +85°C.

Feature Summary

• Combines a high-efficiency synchronous buck converter with a low-noise linear regulator in a single compact package
• Provides independent control and shutdown capabilities for each output channel to optimize system power consumption
• Features automatic transition between PWM and PFM modes to maintain efficiency across varying load conditions

Applications

• Portable computers and handheld devices requiring multiple supply rails
• USB-powered electronic equipment
• Cellular phones and mobile communication modules
• Handheld medical instruments

Procurement Notes

Verify the specific suffix '1P0' confirms the 1.0 V fixed LDO output during procurement. Confirm the 'EUN' suffix corresponds to the MSOP-10 package variant. Ensure compliance with RoHS directives and check humidity sensitivity levels before storage. Validate that the ordering part number matches the required electrical specifications exactly.

Selection Notes

Select this component when a design requires a primary core voltage and a secondary bias voltage from a single input source. It is suitable for applications needing high efficiency under heavy loads via the buck regulator and clean power for sensitive analog circuits via the LDO. Consider the 1.0 V fixed output constraint for the LDO channel against other available fixed voltages in the series.

Part Context

This part belongs to the TC1313 family of dual-output regulators designed to reduce system cost and board space. Unlike single-output regulators, it addresses the need for distinct voltage levels in complex digital systems. The family offers various fixed and adjustable combinations, with the TC1313-1P0EUN specifically providing a 1.0 V LDO output alongside an adjustable buck converter.

Replacement Considerations

Direct replacements include other TC1313 variants with different LDO fixed voltages or buck adjustment ranges, such as TC1313-1P2EUN or TC1313-ZP0EUN, provided the voltage requirements align. Verify pin compatibility and thermal performance when substituting.