Overview
The onsemi NCP1117IST33T3G is a low dropout (LDO) positive linear voltage regulator from the NCP1117 series. This regulator 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 a fixed output voltage of 3.3 V and features no minimum load requirement to maintain regulation. The device is packaged in a SOT-223 (TO-261-4) package, suitable for surface mount applications. The NCP1117IST33T3G is known for its high accuracy, with the reference/output voltage trimmed to within ±1.0%.
Key Specifications
| Specification | Value |
|---|---|
| Input Voltage (Min) | 2.9 V |
| Input Voltage (Max) | 12 V |
| Dropout Voltage (Max) | 1.2 V |
| Output Current (Max) | 1 A |
| Operating Temperature Range | -55°C to +150°C |
| Regulator Topology | Adjustable/Fixed |
| Quiescent Current | 6 mA |
| Number of Outputs | 1 |
| Output Noise | 0.003 V |
| Current Limit | 1500 mA |
| Package Type | SOT-223 (TO-261-4) |
| Mounting Method | Surface Mount |
| Line Regulation | 4.5 mV |
| Load Regulation | 10 mV |
| Accuracy | ±1% |
Key Features
- High output current capability: up to 1.0 A.
- Low dropout voltage: 1.2 V at 800 mA over temperature.
- Fixed output voltage: 3.3 V with no minimum load requirement.
- Adjustable output voltage option: can be programmed from 1.25 V to 18.8 V with two external resistors.
- High accuracy: reference/output voltage trimmed to within ±1.0%.
- Internal protection features: output current limiting, safe operating area compensation, and thermal shutdown.
- Pb-free packages available.
Applications
- Consumer and Industrial Equipment Point of Regulation.
- Switching Power Supply Post Regulation.
- Hard Drive Controllers.
- Battery Chargers.
- Automotive applications.
- Direct replacement for LM1117I).
Q & A
- What is the maximum output current of the NCP1117IST33T3G?
The maximum output current is 1 A.
- What is the dropout voltage at 800 mA over temperature?
The dropout voltage is 1.2 V at 800 mA over temperature.
- What is the fixed output voltage of the NCP1117IST33T3G?
The fixed output voltage is 3.3 V.
- Does the NCP1117IST33T3G have an adjustable output voltage option?
- What is the accuracy of the reference/output voltage?
The reference/output voltage is trimmed to within ±1.0%.
- What are the internal protection features of the NCP1117IST33T3G?
The internal protection features include output current limiting, safe operating area compensation, and thermal shutdown.
- What is the package type and mounting method of the NCP1117IST33T3G?
The package type is SOT-223 (TO-261-4) and the mounting method is surface mount.
- What is the operating temperature range of the NCP1117IST33T3G?
The operating temperature range is -55°C to +150°C.
- What are some common applications of the NCP1117IST33T3G?
Common applications include consumer and industrial equipment point of regulation, switching power supply post regulation, hard drive controllers, battery chargers, and automotive applications.
- Is the NCP1117IST33T3G a direct replacement for any other regulator?
