L7986TATR

Voltage Regulators - DC DC Switching Regulators Overview

The L7986TATR is a synchronous step-down switching regulator manufactured by STMicroelectronics, designed for high-efficiency power conversion in compact systems. It features an integrated power MOSFET capable of delivering up to 3 A of continuous output current with a minimum current limit of 3.7 A. The device operates with an input voltage range from 4.5 V to 38 V and provides an adjustable output voltage from 0.6 V to the input voltage level. It incorporates an internal oscillator with a fixed frequency of 250 kHz, which can be externally programmed up to 1 MHz. The component is housed in an 8-pin HSOP EP package with an exposed pad to facilitate thermal management.

Voltage Regulators - DC DC Switching Regulators Feature Summary

• Integrates a low RDS(on) power MOSFET to minimize external component count and reduce solution size.
• Supports low dropout operation with 100% duty cycle for efficient battery-powered applications.
• Includes built-in protection mechanisms such as overcurrent limiting and thermal shutdown.
• Features internal soft-start and enable control to manage inrush current and system sequencing.

Voltage Regulators - DC DC Switching Regulators Applications

• Point-of-load (POL) regulation for industrial equipment
• Power supply stages for automotive infotainment and control modules
• Voltage regulation for embedded computing and networking hardware

Voltage Regulators - DC DC Switching Regulators Procurement Notes

Verify the specific suffix 'TR' confirms tape-and-reel packaging when ordering. Confirm the 8-pin HSOP EP package variant matches your PCB footprint requirements. Ensure the design accounts for the exposed pad thermal connection for optimal heat dissipation. Cross-reference the latest datasheet revision for any updates to electrical characteristics or recommended operating conditions before finalizing the bill of materials.

Voltage Regulators - DC DC Switching Regulators Selection Notes

Select this component for designs requiring a single-output buck converter with high current capability in a small form factor. It is suitable for applications where input voltages vary between 4.5 V and 38 V. Consider the thermal performance of the HSOP EP package relative to your board layout and airflow conditions. Evaluate the need for external frequency synchronization if operating near sensitive noise boundaries.

Voltage Regulators - DC DC Switching Regulators Part Context

This part belongs to the L7986 family of monolithic buck converters from STMicroelectronics. The family includes variants with different packaging options, such as VFDFPN-EP-10, to suit various thermal and spatial constraints. These regulators are engineered for robustness in demanding environments, offering high reliability for both industrial and automotive sectors.

Voltage Regulators - DC DC Switching Regulators Replacement Considerations

Direct substitutes within the same series include L7986ATR and L7986TR, which share identical electrical specifications but differ in packaging type. Verify pinout compatibility and thermal resistance values when transitioning between package styles to ensure proper board integration.