L5986TR

Voltage Regulators - DC DC Switching Regulators Overview

The L5986TR is a step-down switching regulator manufactured by STMicroelectronics, designed for high-current applications. It features an embedded Power MOSFET capable of delivering up to 2.5 A DC output current with a minimum input voltage of 2.9 V and a maximum input voltage of 18 V. The output voltage is adjustable from 0.6 V to the input voltage level. The device incorporates an internal 250 kHz switching frequency oscillator that can be externally adjusted up to 1 MHz. It operates within a junction temperature range of -40°C to +150°C and is housed in an 8-VFQFPN package with dimensions of 3x3 mm.

Voltage Regulators - DC DC Switching Regulators Feature Summary

• Integrates a 3.0 A current-limited embedded Power MOSFET for efficient power delivery
• Supports low dropout operation with 100% duty cycle capability
• Includes internal soft-start and inhibit functions for controlled startup
• Provides overcurrent and thermal protection mechanisms

Voltage Regulators - DC DC Switching Regulators Applications

• Power supply systems requiring 3.3 V bus compatibility
• Industrial equipment power management
• Automotive electronic subsystems

Voltage Regulators - DC DC Switching Regulators Procurement Notes

Verify component authenticity through authorized channels as this part may have end-of-life status. Confirm package integrity upon receipt, specifically checking the exposed pad condition for proper thermal dissipation. Ensure design compatibility with the 8-VFQFPN footprint and validate external component values against the official datasheet specifications before implementation.

Voltage Regulators - DC DC Switching Regulators Selection Notes

Select this component when a buck converter with high current capacity and wide input voltage range is required. Consider the thermal performance characteristics provided by the exposed pad design for heat dissipation requirements. Evaluate the programmable switching frequency feature if electromagnetic interference optimization is necessary for the specific application environment.

Voltage Regulators - DC DC Switching Regulators Part Context

The L5986 belongs to a family of step-down switching regulators from STMicroelectronics. It shares architectural similarities with other models in the series but is distinguished by its 2.5 A output current capability and specific package options. The TR suffix indicates reel packaging for automated assembly processes.

Voltage Regulators - DC DC Switching Regulators Replacement Considerations

L5987TR is identified as a direct substitute option available from STMicroelectronics.