L6985FTR

Voltage Regulators - DC DC Switching Regulators Overview

The L6985FTR is a monolithic synchronous step-down switching regulator from STMicroelectronics, designed for high-efficiency power conversion in portable and industrial applications. It integrates two N-channel MOSFETs and operates with an input voltage range of 2.7V to 5.5V. The device delivers a programmable output current up to 3A with adjustable output voltages between 0.8V and 3.3V. Operating at a fixed frequency of 1MHz, it features integrated compensation, soft-start, and protection mechanisms including overcurrent, thermal shutdown, and undervoltage lockout.

Voltage Regulators - DC DC Switching Regulators Feature Summary

• Integrated synchronous rectification with dual N-channel MOSFETs for enhanced efficiency
• Fixed 1MHz switching frequency enabling compact external component sizing
• Comprehensive protection suite including thermal shutdown and cycle-by-cycle current limiting
• Adjustable output voltage via external resistor divider with precise internal reference

Voltage Regulators - DC DC Switching Regulators Applications

• Portable electronics requiring efficient battery-powered operation
• Industrial control systems needing stable low-voltage rails
• Communication equipment utilizing point-of-load regulation
• Embedded systems with strict space constraints for power stages

Voltage Regulators - DC DC Switching Regulators Procurement Notes

Verify the exact suffix 'FTR' corresponds to the specific tape-and-reel packaging configuration required for your assembly line. Confirm that the operating temperature range and pinout compatibility match your PCB design specifications before finalizing procurement orders to avoid integration issues.

Voltage Regulators - DC DC Switching Regulators Selection Notes

Select this component when designing systems requiring a compact solution with high efficiency under moderate load conditions. Ensure the input voltage source remains within the 2.7V to 5.5V window. Consider the thermal performance requirements given the integrated MOSFETs, as heat dissipation depends on ambient conditions and PCB copper area availability.

Voltage Regulators - DC DC Switching Regulators Part Context

This part belongs to the L6985 family of synchronous buck converters. It shares core architecture with other variants differing primarily in packaging or temperature grades. The FTR designation specifically indicates the surface-mount traceless package variant intended for automated surface-mount technology assembly processes.

Voltage Regulators - DC DC Switching Regulators Replacement Considerations

Direct replacements include other L6985 variants such as L6985DTR if different packaging is acceptable. Cross-reference with similar 3A synchronous buck regulators from other manufacturers only after verifying pin-to-pin compatibility and electrical parameter alignment.