Overview
The NCV317MABSTT3G is an adjustable three-terminal positive voltage regulator produced by onsemi. This device is part of the LM317 family and is capable of supplying in excess of 500 mA over an output voltage range of 1.2 V to 37 V. It is exceptionally easy to use, requiring only two external resistors to set the output voltage. The NCV317MABSTT3G is designed with internal current limiting, thermal shutdown, and safe area compensation, making it essentially blow-out proof.
Key Specifications
| Parameter | Value | Unit |
|---|---|---|
| Output Current | 500 mA | A |
| Output Voltage Range | 1.2 V to 37 V | V |
| Input-Output Voltage Differential | 40 Vdc | V |
| Minimum Load Current to Maintain Regulation | 3.5 to 10 mA | mA |
| Maximum Output Current (VI - VO ≤ 15 V, PD ≤ Pmax) | 0.5 A | A |
| RMS Noise (% of VO, 10 Hz ≤ f ≤ 10 kHz) | 0.003 % | % |
| Ripple Rejection (VO = 10 V, f = 120 Hz) | 66 to 80 dB | dB |
| Thermal Shutdown | 180 °C | °C |
| Long-Term Stability (TJ = Thigh) | 0.3 to 1.0 %/1.0 kHrs. | %/kHrs. |
| Operating Temperature Range | -40°C to 125°C | °C |
| Package Type | SOT-223 (Pb-Free) |
Key Features
- Output current in excess of 500 mA
- Output voltage adjustable between 1.2 V and 37 V
- Internal thermal overload protection
- Internal short circuit current limiting
- Output transistor safe-area compensation
- Floating operation for high voltage applications
- Low adjustment pin current (less than 100 μA)
- Long-term stability
Applications
The NCV317MABSTT3G serves a wide variety of applications, including local, on-card regulation. It can be used as an adjustable switching regulator, a programmable output regulator, or as a precision current regulator by connecting a fixed resistor between the adjustment and output terminals. Other applications include voltage regulation in electronic devices, power supplies, and in systems requiring adjustable voltage outputs.
Q & A
- What is the output current capability of the NCV317MABSTT3G?
The NCV317MABSTT3G can supply an output current in excess of 500 mA. - What is the adjustable output voltage range of the NCV317MABSTT3G?
The output voltage can be adjusted between 1.2 V and 37 V. - What are the key protection features of the NCV317MABSTT3G?
The device features internal thermal overload protection, short circuit current limiting, and safe area compensation. - How is the output voltage set on the NCV317MABSTT3G?
The output voltage is set using two external resistors connected between the adjustment pin and the output terminal. - What is the operating temperature range of the NCV317MABSTT3G?
The operating temperature range is -40°C to 125°C. - What package type is the NCV317MABSTT3G available in?
The device is available in a SOT-223 (Pb-Free) package. - What is the thermal shutdown temperature of the NCV317MABSTT3G?
The thermal shutdown temperature is 180 °C. - How does the NCV317MABSTT3G ensure long-term stability?
The device has a long-term stability specification of 0.3 to 1.0 %/1.0 kHrs. - Can the NCV317MABSTT3G be used as a precision current regulator?
Yes, by connecting a fixed resistor between the adjustment and output terminals, the NCV317MABSTT3G can be used as a precision current regulator. - What is the minimum load current required to maintain regulation?
The minimum load current to maintain regulation is 3.5 to 10 mA.
