Overview
The NCP1117ST12T3G is a low-dropout positive voltage regulator from onsemi, part of the NCP1117 series. This device is capable of providing an output current in excess of 1.0 A with a maximum dropout voltage of 1.2 V at 800 mA over temperature. It is available in fixed and adjustable output voltage configurations, making it versatile for various applications. The NCP1117 series includes internal protection features such as output current limiting, safe operating area compensation, and thermal shutdown, ensuring reliable operation in diverse environments.
Key Specifications
| Characteristic | Value | Unit |
|---|---|---|
| Output Current | 1.0 A | A |
| Maximum Dropout Voltage | 1.2 V at 800 mA | V |
| 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, 12 V | V |
| Adjustable Output Voltage Range | 1.25 V to 18.8 V | V |
| Input Voltage Range | Up to 20 V | V |
| Reference/Output Voltage Accuracy | ±1.0% | % |
| Output Short Circuit Duration | Infinite | - |
| Thermal Shutdown | Yes | - |
| Package Types | SOT-223, DPAK | - |
Key Features
- Low dropout voltage of 1.2 V at 800 mA over temperature.
- No minimum load requirement for fixed voltage output devices.
- Adjustable output voltage option from 1.25 V to 18.8 V.
- Internal protection features including output current limiting, safe operating area compensation, and thermal shutdown.
- Operation up to 20 V input voltage.
- Pb-Free devices.
- AEC-Q100 qualified and PPAP capable for automotive and other critical applications.
Applications
- Consumer and industrial equipment point of regulation.
- Active SCSI termination for the 2.85 V version.
- Switching power supply post-regulation.
- Hard drive controllers.
- Battery chargers.
Q & A
- What is the maximum output current of the NCP1117ST12T3G?
The maximum output current is in excess of 1.0 A. - What is the maximum dropout voltage of the NCP1117ST12T3G?
The maximum dropout voltage is 1.2 V at 800 mA over temperature. - What are the available fixed output voltages for the NCP1117 series?
The fixed output voltages are 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. - Can the output voltage of the NCP1117 be adjusted?
Yes, the adjustable output version can be programmed from 1.25 V to 18.8 V using two external resistors. - What is the input voltage range for the NCP1117ST12T3G?
The input voltage range is up to 20 V. - Does the NCP1117ST12T3G have internal protection features?
Yes, it includes output current limiting, safe operating area compensation, and thermal shutdown. - What are the package types available for the NCP1117 series?
The devices are available in SOT-223 and DPAK packages. - Is the NCP1117ST12T3G AEC-Q100 qualified?
Yes, it is AEC-Q100 qualified and PPAP capable for automotive and other critical applications. - What is the reference/output voltage accuracy of the NCP1117ST12T3G?
The reference/output voltage accuracy is ±1.0%. - Does the NCP1117ST12T3G require a minimum load to maintain regulation?
No, there is no minimum load requirement for fixed voltage output devices.
