L6986ITR

Voltage Regulators - DC DC Switching Regulators Overview

The L6986ITR is an industrial-grade synchronous iso-buck converter designed for isolated buck topology applications. It operates with an input voltage range of 4.0 V to 38.0 V and delivers up to 5 W of power. The device features a P-Channel MOSFET high-side switch enabling 100% duty cycle operation, eliminating the need for optocouplers. Key electrical parameters include a typical primary sink peak current of 1.9 A, adjustable switching frequency with synchronization capability, and low shutdown quiescent current of 8 µA. The component utilizes HTSSOP16 packaging and incorporates thermal shutdown protection.

Voltage Regulators - DC DC Switching Regulators Feature Summary

• Designed specifically for isolated buck topology with transformer-based secondary output derivation
• Eliminates requirement for optocouplers through primary-side regulation and given transformer ratio
• Features peak current mode architecture in forced PWM operation with 300 ns blanking time
• Provides embedded primary output voltage supervisor via RST open collector output

Voltage Regulators - DC DC Switching Regulators Applications

• Isolated DC-DC conversion in industrial control systems
• Power supply modules requiring galvanic isolation without optocouplers
• Applications needing tracked soft-start of secondary outputs
• Systems utilizing 12 V or 24 V bus architectures with isolation requirements

Voltage Regulators - DC DC Switching Regulators Procurement Notes

Verify that the specific part number L6986ITR corresponds to the iso-buck variant rather than the standard step-down regulator. Confirm the package marking matches the HTSSOP16 form factor. Ensure the supplier documentation explicitly states the 5W isolated buck capability and 1.9A primary current rating. Cross-reference the ECCN classification EAR99/NEC for export compliance if applicable. Validate that the tape and reel packing type aligns with automated assembly requirements.

Voltage Regulators - DC DC Switching Regulators Selection Notes

Select this component when galvanic isolation is required without the complexity of optocoupler feedback loops. It is suitable for designs needing precise primary voltage adjustment while deriving secondary voltage via transformer turns ratio. Consider the 1.9A primary current limit for energy transfer capacity. The 300ns blanking time addresses transformer leakage inductance oscillations. Verify compatibility with the required operating temperature range for industrial grade performance.

Voltage Regulators - DC DC Switching Regulators Part Context

The L6986 family includes both standard synchronous step-down regulators and isolated variants. The L6986ITR specifically denotes the iso-buck version intended for isolated topologies. Unlike the non-isolated L6986 which offers 2A continuous output, this variant focuses on 5W isolated power delivery. It shares architectural similarities like peak current mode control but differs in application scope by supporting transformer-coupled secondary outputs.

Voltage Regulators - DC DC Switching Regulators Replacement Considerations

Public confirmed substitute part numbers are not available in the provided documentation.