L7986

Voltage Regulators - DC DC Switching Regulators Overview

The L7986 is a step-down switching regulator featuring an embedded power MOSFET with a minimum current limit of 3.7 A, delivering up to 3 A output current. It supports an input voltage range of 4.5 V to 38 V and adjustable output voltages from 0.6 V to VIN. The device includes an internal 250 kHz oscillator, programmable up to 1 MHz. Available in VFDFPN-EP-10 and HSOP-EP-8 packages, it operates between -40°C and +150°C TJ.

Voltage Regulators - DC DC Switching Regulators Feature Summary

• Integrates a 3.7 A current-limited embedded power MOSFET for high-efficiency load delivery
• Features an internal 250 kHz switching frequency oscillator adjustable up to 1 MHz
• Supports low dropout operation with 100% duty cycle capability
• Includes built-in overcurrent and thermal protection mechanisms

Voltage Regulators - DC DC Switching Regulators Applications

• Step-down DC/DC conversion in industrial systems
• Power management for automotive applications
• General-purpose voltage regulation requiring wide input ranges

Voltage Regulators - DC DC Switching Regulators Procurement Notes

Verify the specific package variant (VFDFPN or HSOP) required for your design, as thermal performance varies by footprint. Confirm RoHS compliance status through official ST documentation prior to ordering. Ensure supply chain partners provide valid traceability records. Check moisture sensitivity levels for proper storage handling. Validate that the selected revision matches your schematic requirements.

Voltage Regulators - DC DC Switching Regulators Selection Notes

Select this component when a wide input voltage range up to 38 V is necessary. Choose based on thermal requirements, noting that HSOP packages offer lower thermal resistance compared to DFN options. Consider the programmable switching frequency if EMI constraints require adjustment beyond the default 250 kHz. Ensure the load current does not exceed the 3 A continuous rating under worst-case conditions.

Voltage Regulators - DC DC Switching Regulators Part Context

The L7986 belongs to STMicroelectronics' monolithic buck converter portfolio designed for high reliability. It is part of the L7986 series, which targets automotive and industrial sectors. The device complements other PMIC solutions by offering robust protection features and flexible frequency control within a compact surface-mount form factor.

Voltage Regulators - DC DC Switching Regulators Replacement Considerations

Direct substitutes include L7986A, L7986TR, L7986ATR, and L7986TATR. Verify pin compatibility and thermal pad specifications when swapping between HSOP and DFN variants. Ensure equivalent current limits and operating temperature ranges are maintained.