The NCP1117ST33T3G is a high-performance, low dropout forward voltage regulator in onsemi's NCP1117 family, designed to provide output currents in excess of 1.0 A. The regulator has a maximum dropout voltage of 1.2 V at 800 mA and is suitable for a wide range of application scenarios. The regulator has a maximum dropout voltage of 1.2 V at 800 mA, making it suitable for a wide range of application scenarios.The NCP1117 family includes a variety of fixed output voltage options including 1.5 V, 1.8 V, 1.9 V, 2.0 V, 2.5 V, 2.85 V, 3.3 V, 5.0 V, and 12 V. Additionally, an adjustable output version is also available, which can be adjusted from 1.25 V to 18.8 V with two external resistors. 1.25 V to 18.8 V. The NCP1117 family features internal protection to ensure safety and reliability under a wide range of operating conditions and is capable of operating at input voltages up to 20 V. The devices are available in SOT-223 or SMT-223 versions. The devices are available in SOT-223 and DPAK packages.

　　Features

　　High output current: Provides more than 1.0 A of output current to meet high power requirements.

　　Low dropout voltage: Maximum dropout voltage is only 1.2 V at 800 mA over temperature.

　　Multiple fixed output voltages: 1.5 V, 1.8 V, 1.9 V, 2.0 V, 2.5 V, 2.85 V, 3.3 V, 5.0 V, and 12 V to meet different application requirements.

　　Adjustable output voltage option: Programmable from 1.25 V to 18.8 V with two external resistors.

　　High-accuracy voltage regulation: Reference/output voltages can be fine-tuned to within ±1.0% accuracy.

　　Built-in protection features: Including output current limiting, safe operating area compensation and thermal shutdown ensure device stability and safety under a wide range of operating conditions.

　　Wide Input Voltage Range: Up to 20 V input voltage operation to adapt to different power supply conditions.

　　Lead-free devices: RoHS compliant, environmentally friendly and lead-free.

　　Application

　　NCP1117ST33T3G is widely used in consumer electronics and industrial equipment regulation point, especially suitable for the following scenarios:

　　Consumer and industrial equipment regulation point: Provide stable voltage output to guarantee the normal operation of the equipment.

　　Active SCSI terminals: For 2.85 V version.

　　Switching Power Supply Post Regulation: Used to improve the stability and performance of switching power supplies.

　　Hard Disk Drive Controller: Provides stable voltage to ensure the reliable operation of hard disk drives.

　　Battery Charger: Provides stable voltage output during battery charging.

　　DataSheet

　　Brand：onsemi(AnsonMicro)

　　Product Category: Low Dropout Regulators

　　Package/Case: SOT-223-3

　　Output Voltage: 3.3 V

　　Output Current: 1 A

　　Number of outputs: 1 Output

　　Polarity: Positive (Positive)

　　Quiescent current: 10 mA

　　Maximum input voltage: 20 V

　　Output type: Fixed

　　Operating temperature range: 0°C to +125°C

　　Setback voltage: 0.95 V

　　Voltage regulation accuracy: 1%

　　Input bias current: 6 mA

　　Line regulation: 0.8 mV

　　Load regulation: 4.3 mV

　　Unit weight: 250 mg

　　Package

　　Height: 1.69 mm

　　Length: 6.7 mm

　　Width: 3.7 mm

　　Conclusion

　　With its high output current, low dropout voltage and multiple fixed and adjustable output voltage options, the NCP1117ST33T3G Low Dropout Forward Fixed and Adjustable Voltage Regulator is an ideal voltage regulator solution for a wide variety of consumer electronics and industrial equipment. Its built-in multiple protection functions and high accuracy voltage regulation capability ensure safety and reliability in a variety of application scenarios. Whether used for post regulation of switching power supplies, hard disk drive controllers and battery chargers, the NCP1117ST33T3G delivers outstanding performance.