FAN1117AT

Voltage Regulators - Linear, Low Drop Out (LDO) Regulators Overview

The FAN1117AT is a fixed positive low-dropout linear regulator manufactured by onsemi, designed for applications requiring stable voltage regulation with high current capability. It delivers a fixed output voltage of 3.3 V at a maximum load current of 1 A. The device operates within an input voltage range from a minimum of 2.5 V to a maximum of 17 V. Key electrical specifications include a typical dropout voltage of 1.2 V at full load and a quiescent current of 13 mA. It features line regulation of 0.2 %/V and load regulation of 0.5 %. The unit is housed in a TO-220-3 through-hole package, supporting power dissipation up to 18 W, and functions reliably across an operating temperature range of 0°C to +125°C.

Voltage Regulators - Linear, Low Drop Out (LDO) Regulators Feature Summary

• Provides a fixed 3.3 V output with 1 A continuous current capacity for stable power supply rails.
• Operates with a wide input voltage range up to 17 V, accommodating various system power sources.
• Engineered for thermal efficiency with a maximum dropout voltage of 1.2 V at full load.
• Ensures robust performance under varying conditions with specified line and load regulation metrics.

Voltage Regulators - Linear, Low Drop Out (LDO) Regulators Applications

• Power management for embedded systems requiring regulated 3.3 V logic levels
• Pre-regulation stages for switching power supplies to reduce ripple
• Battery-powered devices needing efficient linear regulation from higher voltage sources

Voltage Regulators - Linear, Low Drop Out (LDO) Regulators Procurement Notes

Verify component authenticity through authorized distributors or direct manufacturer channels due to potential availability constraints. Confirm RoHS compliance status via official datasheets before integration. Check for obsolescence notices as the product lifecycle status may affect long-term supply continuity. Ensure packaging type matches design requirements for through-hole assembly processes.

Voltage Regulators - Linear, Low Drop Out (LDO) Regulators Selection Notes

Select this component when a fixed 3.3 V output is required with up to 1 A load current. Consider the TO-220-3 package for through-hole mounting needs and adequate thermal dissipation capabilities. Evaluate input voltage ranges to ensure compatibility with source supplies between 2.5 V and 17 V. Assess thermal management strategies given the 18 W power dissipation rating and operating temperature limits.

Voltage Regulators - Linear, Low Drop Out (LDO) Regulators Part Context

The FAN1117 series represents a family of low-dropout regulators offering both adjustable and fixed output options. This specific variant provides a fixed 3.3 V rail, distinguishing it from adjustable models like the FAN1117AD. It shares core architectural similarities with other members such as the NCP1117 but differs in pinout configuration and package style, catering specifically to through-hole design implementations.

Voltage Regulators - Linear, Low Drop Out (LDO) Regulators Replacement Considerations

Direct substitutes include other 3.3 V fixed LDOs in TO-220 packages from onsemi or competitors, provided they match the 1 A current rating and 17 V max input voltage. Verify pin compatibility and thermal characteristics before substitution.