FAN1117AT18

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

The FAN1117AT18 is a positive fixed-output Low Dropout (LDO) linear voltage regulator manufactured by onsemi. It provides a stable 1.8 V output with a maximum load current of 1 A. The device operates within an input voltage range of up to 18 V and features a maximum dropout voltage of 1.2 V at full load. Key electrical specifications include a quiescent current of 13 mA, a line regulation of 0.2 %/V, and a load regulation of 0.5 %. Power dissipation capability reaches 18 W, and the unit supports operation from 0°C to +125°C in a TO-220-3 package.

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

• Provides fixed 1.8 V output with 1 A continuous current capability
• Operates with input voltages up to 18 V
• Includes internal overcurrent and thermal protection mechanisms

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

• General purpose linear power regulation
• Battery-powered systems requiring low noise supply
• Embedded logic circuit power supplies

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

Verify component authenticity through authorized onsemi distributors or certified partners. Confirm RoHS compliance status via official datasheets. Check for obsolescence notices as availability may vary. Ensure packaging matches project requirements for TO-220-3 surface mount or through-hole integration. Validate temperature ratings against operational environment constraints.

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

Select this regulator when a fixed 1.8 V rail is required with high current capacity. The TO-220-3 package offers robust thermal performance for higher power dissipation scenarios compared to smaller footprints. Consider the 18 V maximum input rating for applications with variable source voltages. Evaluate thermal management needs given the 18 W power dissipation potential under heavy loads.

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

This component belongs to the FAN1117 series of standard LDO regulators from onsemi. The series includes variants with different output voltages and packages such as DPAK and SOT-223. The AT suffix typically denotes the TO-220-3 package variant. These regulators are designed for general-purpose applications requiring simple, reliable voltage regulation without external feedback components.

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

Compatible substitutes include NCV1117DT18T5G for automotive-grade requirements in DPAK packaging. Other FAN1117 variants with identical 1.8 V output but different packages may serve as pin-compatible alternatives if thermal constraints allow.