Overview
The NCP551SN33T1G is a fixed output low dropout (LDO) linear voltage regulator from onsemi, designed for applications requiring low quiescent current. This device is part of the NCP551 series, which features an ultra-low quiescent current of 4.0 µA, making it suitable for handheld communication equipment and portable battery-powered applications. The regulator is housed in a micro miniature TSOP-5 surface mount package and is compatible with low-cost ceramic capacitors, requiring a minimum output capacitor of 0.1 µF.
Key Specifications
| Attribute | Value |
|---|---|
| Input Voltage - Max | 12 V |
| Output Voltage - Fixed | 3.3 V |
| Dropout Voltage - Max | 150 mV |
| Output Current - Max | 150 mA |
| Rated Power | 0.5 W |
| Tolerance (%) | ±2% |
| Operating Temperature Range | -40°C to +85°C |
| Regulator Topology | Fixed |
| Quiescent Current | 8 µA |
| No. of Outputs | Single |
| Load Regulation | 65 mV |
| Line Regulation | 30 mV |
| Package Style | SC-74A (TSOP-5, SOT-25) |
| Mounting Method | Surface Mount |
Key Features
- Low quiescent current of 4.0 µA typical
- Maximum operating voltage of 12 V
- Low output voltage options available
- High accuracy output voltage of ±2%
- Industrial temperature range of -40°C to 85°C
- Compatible with low-cost ceramic capacitors, requiring a minimum output capacitor of 0.1 µF
- Internal thermal shutdown circuitry for overheating protection
- Current limit and temperature limit protection circuits
Applications
- Battery-powered instruments
- Handheld communication equipment
- Camcorders and cameras
- Portable battery-powered applications
- General use in low power, low dropout voltage regulation requirements
Q & A
- What is the maximum input voltage for the NCP551SN33T1G?
The maximum input voltage is 12 V.
- What is the fixed output voltage of the NCP551SN33T1G?
The fixed output voltage is 3.3 V.
- What is the maximum output current of the NCP551SN33T1G?
The maximum output current is 150 mA.
- What is the quiescent current of the NCP551SN33T1G?
The quiescent current is typically 4.0 µA.
- What is the operating temperature range of the NCP551SN33T1G?
The operating temperature range is -40°C to +85°C.
- What type of package does the NCP551SN33T1G come in?
The device is housed in a TSOP-5 (SOT-25) surface mount package.
- Does the NCP551SN33T1G have thermal protection?
Yes, it has internal thermal shutdown circuitry to protect against overheating.
- What is the minimum output capacitor required for the NCP551SN33T1G?
The minimum output capacitor required is 0.1 µF.
- Is the NCP551SN33T1G RoHS compliant?
Yes, the device is Pb-free and RoHS compliant.
- What are some typical applications for the NCP551SN33T1G?
Typical applications include battery-powered instruments, handheld communication equipment, and portable battery-powered devices.
