L5980TR

Voltage Regulators - DC DC Switching Regulators Overview

The L5980TR is a step-down switching regulator manufactured by STMicroelectronics, featuring an embedded Power MOSFET with a minimum current limit of 1 A to deliver over 700 mA DC output. It operates with an input voltage range of 2.9 V to 18 V and supports adjustable output voltages from 600 mV to the input level. The device integrates a fixed 250 kHz internal oscillator that can be externally programmed up to 1 MHz. Key electrical parameters include a maximum operating temperature of +150°C, a minimum of -40°C, and a static current of 2.4 mA. It utilizes an 8-pin VFQFPN package with an exposed thermal pad.

Voltage Regulators - DC DC Switching Regulators Feature Summary

• Integrates an internal soft-start mechanism and inhibit control for regulated startup and power management.
• Supports low dropout operation with 100% duty cycle capability for efficient voltage conversion near input limits.
• Includes comprehensive protection features such as overcurrent limiting and thermal shutdown.
• Features voltage feedforward and zero load current operation to enhance stability and efficiency.

Voltage Regulators - DC DC Switching Regulators Applications

• 3.3 V bus powered systems requiring compact step-down regulation
• Industrial applications utilizing the industrial grade temperature range
• Automotive electronics compatible with wide input voltage variations

Voltage Regulators - DC DC Switching Regulators Procurement Notes

Verify the specific suffix 'TR' indicates tape and reel packaging when ordering. Confirm the 8-VFQFPN-EP package dimensions match your PCB footprint requirements. Ensure compatibility with the 2.9 V to 18 V input range for your specific application. Check for RoHS compliance status if required by your manufacturing standards. Validate that the exposed pad thermal design meets your system's heat dissipation needs.

Voltage Regulators - DC DC Switching Regulators Selection Notes

Select this component for designs requiring a compact solution with high efficiency in a small footprint. Consider the programmable switching frequency for optimizing external component size or noise profiles. Evaluate the thermal performance provided by the exposed pad for high ambient temperature environments. Compare against higher current variants like the L5983 if load demands exceed 700 mA. Ensure the single output configuration aligns with system power distribution requirements.

Voltage Regulators - DC DC Switching Regulators Part Context

The L5980 belongs to the L5980 series of monolithic buck converters designed for high reliability. It is part of STMicroelectronics' portfolio of power management ICs targeting automotive and industrial sectors. The series emphasizes ease of implementation with minimal external components. Similar parts in the family offer varying current capabilities while maintaining comparable feature sets and package styles.

Voltage Regulators - DC DC Switching Regulators Replacement Considerations

Public confirmed substitute part numbers are not available in the provided documentation. Verify pinout and thermal characteristics before considering any alternative devices from other manufacturers.