L5980

Voltage Regulators - DC DC Switching Regulators Overview

The L5980 is a step-down switching regulator from STMicroelectronics featuring an embedded Power MOSFET with a minimum current limit of 1 A, enabling DC output currents exceeding 0.7 A depending on application conditions. It operates with an input voltage range of 2.9 V to 18 V and provides an adjustable output voltage from 0.6 V up to the input voltage. The device integrates a 250 kHz internal oscillator that can be externally programmed up to 1 MHz. Packaged in a compact VFQFPN-EP-8 (3x3 mm) format with an exposed pad for thermal efficiency, it supports low dropout operation at 100% duty cycle and includes internal soft-start and inhibit functions.

Voltage Regulators - DC DC Switching Regulators Feature Summary

• Integrates a Power MOSFET with a 1 A minimum current limit for high load capability
• Supports low dropout operation via 100% duty cycle functionality
• Features an internally fixed 250 kHz oscillator with external programmability up to 1 MHz
• Includes internal soft-start and inhibit control mechanisms

Voltage Regulators - DC DC Switching Regulators Applications

• Power supply design for 3.3 V bus systems
• Embedded DC-DC conversion for industrial applications
• Automotive power management circuits
• IoT node power regulation

Voltage Regulators - DC DC Switching Regulators Procurement Notes

Verify the specific suffix of the part number, such as TR for reel packaging, against official STMicroelectronics documentation to ensure correct ordering configuration. Confirm RoHS compliance status through the manufacturer's datasheet or environmental files before procurement. Check for any recent Product Change Notifications (PCNs) regarding assembly sites or material changes to maintain supply chain consistency and regulatory adherence.

Voltage Regulators - DC DC Switching Regulators Selection Notes

Select the L5980 when designing buck converters requiring an input voltage range starting from 2.9 V, making it suitable for 3.3 V bus architectures. Consider this component for applications needing an adjustable output voltage down to 0.6 V with a maximum continuous output current capability above 0.7 A. The choice is appropriate for designs prioritizing a small footprint via the 3x3 mm VFQFPN package while maintaining thermal performance through the exposed pad.

Voltage Regulators - DC DC Switching Regulators Part Context

The L5980 belongs to the L5980 series of monolithic buck converters and step-down switching regulators offered by STMicroelectronics. It is categorized under PMIC - Power Management ICs within the broader semiconductor portfolio. The device is designed for high reliability in automotive and industrial environments, serving as a core component for efficient DC-to-DC voltage conversion in space-constrained electronic systems.

Voltage Regulators - DC DC Switching Regulators Replacement Considerations

Refer to official STMicroelectronics documentation for confirmed substitute part numbers. No public substitutes are listed in the provided source material.

Voltage Regulators - DC DC Switching Regulators FAQ

What is the minimum input voltage required for the L5980?

The L5980 requires a minimum input voltage of 2.9 V, which allows it to operate effectively with a standard 3.3 V bus.

Can the switching frequency of the L5980 be adjusted?

Yes, the device features an internal 250 kHz oscillator that can be externally adjusted to frequencies up to 1 MHz.

Does the L5980 support operation with zero load current?

Yes, the L5980 supports zero-load current operation, allowing it to function efficiently even when no load is connected.