Overview
The LP2950ACZ-3.3RA is a micropower voltage regulator produced by onsemi. It is designed to maintain proper regulation with an extremely low input-to-output voltage differential, making it ideal for battery-powered devices and applications where extending battery life is crucial. This regulator is part of the LP2950 and LP2951 series, known for their low quiescent bias current and high current supply capabilities.
Key Specifications
| Parameter | Min | Typ | Max | Unit |
|---|---|---|---|---|
| Output Voltage (3.3 V Version) | 3.260 | 3.300 | 3.340 | V |
| Input Voltage Range | 4.3 | - | 30 | V |
| Output Current | - | - | 100 | mA |
| Quiescent Bias Current | 75 | - | 120 | μA |
| Dropout Voltage (IO = 100 mA) | 350 | - | 450 | mV |
| Operating Ambient Temperature Range | -40 | - | 125 | °C |
| Package Type | TO-92 | - | - | - |
Key Features
- Low Quiescent Bias Current: 75 μA, which helps in extending battery life in portable devices.
- Low Input-to-Output Voltage Differential: 50 mV at 100 μA and 380 mV at 100 mA, ensuring efficient voltage regulation.
- Tight Line and Load Regulation: Maintains stable output voltage across various input and load conditions.
- Internal Current and Thermal Limiting Protection: Protects the device from overcurrent and overheating.
- Low Output Noise Voltage: Ensures a stable output with minimal noise.
- Shutdown Input (LP2951 only): Allows a logic level signal to turn the regulator on or off.
- Error Output (LP2951 only): Can signal external circuitry of an out-of-regulation condition or serve as a microprocessor power-on reset.
- Programmable Output Voltage (LP2951 only): Can be set to 5.0 V, 3.3 V, 3.0 V, or programmed from 1.25 V to 29 V.
Applications
The LP2950ACZ-3.3RA is suitable for a variety of applications, including:
- Battery-powered computer and consumer electronics.
- Industrial equipment where low power consumption and extended battery life are essential.
- Portable devices requiring stable and efficient voltage regulation.
- Microprocessor power supply systems where a power-on reset feature is beneficial.
Q & A
- What is the typical output voltage of the LP2950ACZ-3.3RA?
The typical output voltage is 3.3 V.
- What is the maximum output current of the LP2950ACZ-3.3RA?
The maximum output current is 100 mA.
- What is the quiescent bias current of the LP2950ACZ-3.3RA?
The quiescent bias current is 75 μA.
- What is the dropout voltage at 100 mA output current?
The dropout voltage is between 350 mV and 450 mV.
- What is the operating ambient temperature range of the LP2950ACZ-3.3RA?
The operating ambient temperature range is -40°C to +125°C.
- Does the LP2950ACZ-3.3RA have internal protection features?
Yes, it has internal current and thermal limiting protection.
- Can the output voltage of the LP2950ACZ-3.3RA be programmed?
No, the LP2950ACZ-3.3RA has a fixed output voltage of 3.3 V. However, the LP2951 series allows for programmable output voltage.
- What package type is the LP2950ACZ-3.3RA available in?
The LP2950ACZ-3.3RA is available in the TO-92 package.
- Is the LP2950ACZ-3.3RA suitable for battery-powered devices?
Yes, it is designed to extend battery life in portable devices due to its low quiescent bias current and low dropout voltage.
- Does the LP2950ACZ-3.3RA have a shutdown input feature?
No, the shutdown input feature is available in the LP2951 series, not in the LP2950 series.
