L5987A

Voltage Regulators - DC DC Switching Regulators Overview

The L5987A is a step-down switching regulator featuring an embedded Power MOSFET with a minimum current limit of 3.5 A, delivering up to 3 A output current. It operates with an input voltage range from 2.9 V to 18 V and provides an adjustable output voltage starting from 0.6 V. The device includes an internal oscillator with a typical frequency of 250 kHz, programmable up to 1 MHz. It utilizes HSOP-8 packaging with an exposed pad for thermal management.

Voltage Regulators - DC DC Switching Regulators Feature Summary

• Integrated power MOSFET with overcurrent protection
• Adjustable switching frequency capability
• Internal soft-start and inhibit functions
• Low dropout operation with zero load current support

Voltage Regulators - DC DC Switching Regulators Applications

• Step-down switching regulator circuits
• Power supply systems for 3.3 V bus applications
• Embedded DC-DC conversion modules

Voltage Regulators - DC DC Switching Regulators Procurement Notes

Verify the specific suffix (e.g., TR) required for tape-and-reel delivery versus tube packaging. Confirm current availability status as some listings indicate discontinued or limited stock. Ensure the selected package variant matches the thermal requirements of the target application design.

Voltage Regulators - DC DC Switching Regulators Selection Notes

Select this component when a buck converter topology is required with high current handling capabilities. Consider the thermal performance of the HSOP package relative to the ambient temperature constraints. Verify that the external component count aligns with the minimal requirement specification for the design.

Voltage Regulators - DC DC Switching Regulators Part Context

This part belongs to the L5987 family of monolithic buck converters designed by STMicroelectronics. It is categorized under PMIC DC-DC Switching Regulators. The device is engineered for industrial and automotive reliability standards, offering robust protection features within a compact surface-mount footprint.

Voltage Regulators - DC DC Switching Regulators Replacement Considerations

Direct substitutes include other STMicroelectronics buck regulators in the same series. Cross-reference pinout compatibility and thermal characteristics before substitution.