L5987TR

Voltage Regulators - DC DC Switching Regulators Overview

The L5987TR is a step-down switching regulator manufactured by STMicroelectronics, featuring an embedded Power MOSFET with a minimum current limit of 3.5 A to deliver up to 3 A output current. It operates with an input voltage range of 2.9 V to 18 V and provides an adjustable output voltage from 0.6 V to VIN. The device integrates a 250 kHz internal oscillator, programmable up to 1 MHz, and includes internal soft-start and inhibit functions. It supports low dropout operation with 100% duty cycle and zero load current capability. The component is housed in an 8-VFQFPN (3x3) package with an exposed pad for thermal management.

Voltage Regulators - DC DC Switching Regulators Feature Summary

• Integrates a 3.5 A current-limited embedded Power MOSFET for high-current delivery
• Features an internal 250 kHz oscillator with external programmability up to 1 MHz
• Supports low dropout operation via 100% duty cycle and zero load current mode
• Includes internal soft-start and inhibit control functions

Voltage Regulators - DC DC Switching Regulators Applications

• Step-down DC/DC conversion for 3.3 V bus systems
• Evaluation using STEVAL-ISA201V1 development board
• Power management in automotive and industrial applications

Voltage Regulators - DC DC Switching Regulators Procurement Notes

Verify the specific suffix TR indicates reel packaging when ordering. Confirm RoHS compliance status through official datasheets or manufacturer documentation prior to integration. Ensure the 8-VFQFPN package dimensions match the target PCB footprint. Check for moisture sensitivity level requirements during storage and handling procedures.

Voltage Regulators - DC DC Switching Regulators Selection Notes

Select this component for designs requiring a single-output buck converter with up to 3 A capacity. The wide input voltage range suits applications powered by 3.3 V buses or higher sources. Consider the thermal performance of the VFQFPN package for heat dissipation needs. Verify that the required switching frequency falls within the 250 kHz to 1 MHz adjustable range.

Voltage Regulators - DC DC Switching Regulators Part Context

The L5987 belongs to the L5987 series of monolithic buck converters designed for high reliability. It is categorized under PMIC - Power Management ICs and specifically Switching Voltage Regulators. The part is actively produced by STMicroelectronics and is supported by evaluation boards such as EVAL5987 and STEVAL-ISA201V1 for design verification.

Voltage Regulators - DC DC Switching Regulators Replacement Considerations

Publicly confirmed substitute part numbers are not available in the provided source material.