Overview
The NCP1117 series, including the NCP1117DT15RK model, are low dropout (LDO) positive linear voltage regulators produced by onsemi. These regulators are 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. The series includes fixed output voltages and an adjustable output version that can be programmed from 1.25 V to 18.8 V using two external resistors. The devices feature on-chip trimming that adjusts the reference/output voltage to within ±1.0% accuracy and include internal protection features such as output current limiting, safe operating area compensation, and thermal shutdown. The NCP1117 series can operate with up to 20 V input and are available in SOT-223 and DPAK packages.
Key Specifications
| Characteristic | Symbol | Min | Max | Unit | |
|---|---|---|---|---|---|
| Output Current | Iout | - | - | 1.0 A | A |
| Maximum Dropout Voltage at 800 mA | Vdo | - | - | 1.2 V | V |
| Fixed Output Voltages | Vout | 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 | Vout | 1.25 V | - | 18.8 V | V |
| Reference Voltage Accuracy | Vref | ±1.0% | - | - | % |
| Input Voltage Range | Vin | - | - | 20 V | V |
| Operating Temperature Range (NCV1117) | Tj | -40°C | - | 125°C | °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%
- Current Limit, Safe Operating Area Compensation, and Thermal Shutdown Protection
- Operation to 20 V Input
- Pb-Free Packages Available
- AEC-Q100 Qualified and PPAP Capable for Automotive and Other Applications
Applications
- Consumer and Industrial Equipment Point of Regulation
- Active SCSI Termination for 2.85 V Version
- Switching Power Supply Post Regulation
- Hard Drive Controllers
- Battery Chargers
- Automotive Applications
- Direct Replacement for LM1117
Q & A
- What is the maximum output current of the NCP1117DT15RK?
The maximum output current is in excess of 1.0 A.
- What is the maximum dropout voltage at 800 mA over temperature?
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.
- How can the output voltage be adjusted in the NCP1117 series?
The output voltage can be adjusted from 1.25 V to 18.8 V using two external resistors.
- What is the reference voltage accuracy of the NCP1117 series?
The reference/output voltage is trimmed to within ±1.0% accuracy.
- What are the internal protection features of the NCP1117 series?
The internal protection features include output current limiting, safe operating area compensation, and thermal shutdown.
- What is the maximum input voltage for the NCP1117 series?
The maximum input voltage is 20 V.
- In what packages are the NCP1117 devices available?
The devices are available in SOT-223 and DPAK packages.
- Are the NCP1117 devices Pb-Free?
Yes, the NCP1117 devices are Pb-Free.
- What are some common applications of the NCP1117 series?
Common applications include consumer and industrial equipment point of regulation, active SCSI termination, switching power supply post regulation, hard drive controllers, and battery chargers.
- Is the NCP1117 series AEC-Q100 qualified?
Yes, the NCP1117 series with the NCV prefix is AEC-Q100 qualified and PPAP capable for automotive and other applications.
