L6986TR

Voltage Regulators - DC DC Switching Regulators Overview

The L6986TR is a synchronous step-down switching regulator manufactured by STMicroelectronics, designed to deliver up to 2 A of DC output current. It operates with an input voltage range from 4 V to 38 V and provides an adjustable output voltage from 0.85 V to the input voltage level. The device features a peak current mode architecture with an adjustable switching frequency between 250 kHz and 2 MHz. Key electrical parameters include a quiescent current of 30 µA in low consumption mode and 8 µA in shutdown. It is housed in a 16-PowerTSSOP package and supports operation temperatures from -40°C to +150°C.

Voltage Regulators - DC DC Switching Regulators Feature Summary

• Synchronous buck topology with integrated high-side P-channel and low-side N-channel MOSFETs for high efficiency
• Adjustable switching frequency allows optimization for size or noise performance
• Embedded output voltage supervisor and sequencing capabilities for system protection
• Low quiescent current modes reduce power consumption during light load or standby conditions

Voltage Regulators - DC DC Switching Regulators Applications

• Industrial point-of-load regulation
• Battery-powered equipment power management
• Consumer electronics DC-DC conversion
• Communication infrastructure power supplies

Voltage Regulators - DC DC Switching Regulators Procurement Notes

Verify the specific suffix 'TR' indicates tape and reel packaging when ordering. Confirm the industrial temperature grade (-40°C to +150°C) matches your environmental requirements. Ensure the 16-HTSSOP footprint aligns with your PCB layout guidelines. Cross-reference the datasheet revision date to confirm compatibility with your design specifications.

Voltage Regulators - DC DC Switching Regulators Selection Notes

Select this component for applications requiring a wide input voltage range up to 38 V and high output current. Consider the adjustable frequency feature if electromagnetic interference (EMI) constraints require shifting the switching noise away from sensitive bands. Evaluate the thermal performance in the PowerTSSOP package against your expected power dissipation levels under maximum load conditions.

Voltage Regulators - DC DC Switching Regulators Part Context

The L6986 belongs to STMicroelectronics' family of monolithic DC-DC switching regulators. It is part of a broader portfolio that includes automotive-grade variants like the A6986. The device is positioned as a robust solution for industrial and consumer markets, offering compactness and high reliability through integrated protection functions such as overcurrent, overvoltage, and thermal shutdown.

Voltage Regulators - DC DC Switching Regulators Replacement Considerations

The A6986 is an automotive-grade equivalent within the same functional family. Verify if AEC-Q100 qualification is required for your application before substituting. Both devices share similar pinouts and electrical characteristics, but check specific reliability standards and operating temperature ranges for final confirmation.

Voltage Regulators - DC DC Switching Regulators FAQ

What is the minimum output voltage achievable with the L6986?

The output voltage is adjustable down to 0.85 V.

Does the L6986 support 100% duty cycle operation?

Yes, the high-side P-channel MOSFET enables 100% duty cycle operation, allowing the output to track the input voltage closely at low drops.

How is the switching frequency controlled?

The switching frequency is adjustable via an external resistor, ranging from 250 kHz to 2 MHz.