Overview
The NCP1117DT50RK is a low-dropout positive voltage regulator from onsemi, designed to provide high current output with minimal voltage drop. This regulator is part of the NCP1117 series, which includes both fixed and adjustable output voltage options. The NCP1117DT50RK specifically offers a fixed output voltage of 5.0 V and is capable of delivering an output current in excess of 1.0 A. It features a maximum dropout voltage of 1.2 V at 800 mA over temperature, ensuring efficient operation across a range of conditions.
Key Specifications
| Characteristic | Symbol | Min | Typ | Max | Unit |
|---|---|---|---|---|---|
| Output Current | Iout | - | - | 1000 mA (Vin < 12 V), 2200 mA (Vin > 12 V) | mA |
| Dropout Voltage (at 800 mA) | Vin-Vout | - | - | 1.2 V | V |
| Output Voltage (Fixed) | Vout | - | 5.0 V | - | V |
| Input Voltage Range | Vin | - | - | 20 V | V |
| Reference Voltage (Adjustable Output) | Vref | 1.238 V | 1.225 V | 1.25 V | V |
| Ripple Rejection (at 120 Hz, 10 Vpp) | RR | - | - | 60 dB | dB |
| Adjustment Pin Current | Iadj | - | 52 μA | 120 μA | μA |
| Temperature Range | T | 0°C (NCP1117), -40°C (NCV1117) | - | 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 Voltage of 5.0 V (for NCP1117DT50RK)
- Adjustable Output Voltage Option (programmable from 1.25 V to 18.8 V with external resistors)
- 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 to 20 V Input
- NCV Prefix for Automotive and Other Applications Requiring Unique Site and Control Change Requirements; AEC-Q100 Qualified and PPAP Capable
- Pb-Free Packages Available
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
Q & A
- What is the maximum output current of the NCP1117DT50RK?
The NCP1117DT50RK can provide an output current in excess of 1.0 A, but it must not exceed 1.0 A when the input voltage is greater than 12 V.
- What is the maximum dropout voltage of the NCP1117DT50RK?
The maximum dropout voltage is 1.2 V at 800 mA over temperature.
- What are the available output voltages for the NCP1117 series?
The fixed output voltages available 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. Additionally, an adjustable output version can be programmed from 1.25 V to 18.8 V.
- Does the NCP1117DT50RK 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 NCP1117DT50RK?
The internal protection features include output current limiting, safe operating area compensation, and thermal shutdown.
- What is the input voltage range for the NCP1117DT50RK?
The input voltage range is up to 20 V.
- Is the NCP1117DT50RK suitable for automotive applications?
Yes, the NCV prefix versions are AEC-Q100 qualified and PPAP capable, making them suitable for automotive and other applications requiring unique site and control change requirements.
- What are the package options for the NCP1117DT50RK?
The device is available in SOT-223 and DPAK packages.
- What is the temperature range for the NCP1117DT50RK?
The temperature range is from 0°C to 125°C for the NCP1117, and from -40°C to 125°C for the NCV1117.
- Are the NCP1117DT50RK packages Pb-free?
Yes, the packages are Pb-free.
