Overview
The NCV1117ST25T3G is a low-dropout positive voltage regulator from onsemi, part of the NCP1117 series. This device is designed to provide a high output current of up to 1.0 A with a maximum dropout voltage of 1.2 V at 800 mA over temperature. It is available in both fixed and adjustable output voltage configurations, making it versatile for various applications. The NCV prefix indicates that this device is AEC-Q100 qualified and PPAP capable, suitable for automotive and other demanding applications.
Key Specifications
| Characteristic | Symbol | Min | Max | Unit | |
|---|---|---|---|---|---|
| Input Voltage | Vin | - | - | 20 | V |
| Output Current | Iout | - | - | 1.0 A | A |
| Maximum Dropout Voltage at 800 mA | Vdropout | - | 1.2 | - | V |
| Output Voltage (Fixed) | Vout | 1.5 | - | 12 | V |
| Output Voltage (Adjustable) | Vout | 1.25 | - | 18.8 | V |
| Reference Voltage Accuracy | Vref | 1.238 | 1.25 | 1.262 | V |
| Quiescent Current | Iq | - | - | 10 | mA |
| Ripple Rejection | RR | 50 | - | - | dB |
| Adjustment Pin Current | Iadj | - | 52 | 120 | μA |
| Temperature Range | Tj | -40 | - | 125 | °C |
Key Features
- Output current in excess of 1.0 A
- 1.2 V maximum dropout voltage at 800 mA over temperature
- Fixed output voltages of 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
- Adjustable output voltage option from 1.25 V to 18.8 V
- No minimum load requirement for fixed voltage output devices
- Reference/output voltage trimmed to ±1.0% accuracy
- Current limit, safe operating area compensation, and thermal shutdown protection
- Operation up to 20 V input
- AEC-Q100 qualified and PPAP capable for automotive and other demanding applications
- Pb-Free devices
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 NCV1117ST25T3G?
The maximum output current is 1.0 A.
- What is the maximum dropout voltage at 800 mA?
The maximum dropout voltage at 800 mA is 1.2 V.
- What are the available fixed output voltages for the NCV1117 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.
- How can the output voltage be adjusted?
The output voltage can be adjusted from 1.25 V to 18.8 V using two external resistors.
- Does the NCV1117ST25T3G require a minimum load to maintain regulation?
No, the fixed voltage output devices do not require a minimum load to maintain regulation.
- What are the internal protection features of the NCV1117ST25T3G?
The internal protection features include output current limiting, safe operating area compensation, and thermal shutdown protection.
- What is the maximum input voltage for the NCV1117ST25T3G?
The maximum input voltage is 20 V.
- Is the NCV1117ST25T3G suitable for automotive applications?
- What are the package options for the NCV1117 series?
The devices are available in SOT-223 and DPAK packages.
- Are the NCV1117ST25T3G devices Pb-Free?
