Overview
The LP2950ACZ-3.3G 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 features a very low quiescent bias current and is capable of supplying output currents up to 100 mA. It is available in a three-pin TO-92 package and offers tight line and load regulation, along with internal current and thermal limiting protection.
Key Specifications
| Characteristic | Symbol | Min | Typ | Max | Unit |
|---|---|---|---|---|---|
| Output Voltage (3.3 V Versions) | VO | 3.260 | 3.300 | 3.340 | V |
| Input Voltage Range | Vin | 4.3 | - | 30 | V |
| Output Current | IO | - | - | 100 | mA |
| Quiescent Bias Current | ICC | 93 | - | 120 | μA |
| Dropout Voltage | VI - VO | 350 | - | 450 | mV |
| Operating Ambient Temperature Range | TA | -40 | - | 125 | °C |
| Storage Temperature Range | Tstg | -65 | - | 150 | °C |
| Maximum Die Junction Temperature | TJ | - | - | 150 | °C |
Key Features
- Low Quiescent Bias Current: 75 μA, which helps in extending battery life.
- Low Input-to-Output Voltage Differential: 50 mV at 100 μA and 380 mV at 100 mA.
- Tight Line and Load Regulation: Ensures 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: Suitable for noise-sensitive applications.
- Shutdown Input (LP2951): Allows a logic level signal to turn off or turn on the regulator output.
- Error Output (LP2951): Can signal external circuitry of an out-of-regulation condition or serve as a microprocessor power-on reset.
- Adjustable Output Voltage (LP2951): Can be programmed from 1.25 V to 29 V using external resistors.
Applications
- Battery-Powered Devices: Ideal for extending battery life in portable electronics.
- Consumer Electronics: Suitable for use in various consumer devices requiring low power consumption.
- Industrial Equipment: Used in industrial applications where low power and high reliability are essential.
- Automotive Systems: The NCV prefix versions are AEC-Q100 qualified and suitable for automotive applications.
Q & A
- What is the output voltage of the LP2950ACZ-3.3G?
The output voltage of the LP2950ACZ-3.3G is 3.3 V with a tolerance of ±0.5%.
- What is the maximum output current of the LP2950ACZ-3.3G?
The maximum output current is 100 mA.
- What is the quiescent bias current of the LP2950ACZ-3.3G?
The quiescent bias current is 75 μA.
- What is the dropout voltage of the LP2950ACZ-3.3G?
The dropout voltage is between 350 mV and 450 mV at 100 mA output current.
- Does the LP2950ACZ-3.3G have internal protection features?
- What is the operating temperature range of the LP2950ACZ-3.3G?
The operating ambient temperature range is -40°C to +125°C.
- Can the LP2950ACZ-3.3G be used in automotive applications?
The NCV prefix versions are AEC-Q100 qualified and suitable for automotive applications, but the LP2950ACZ-3.3G itself is not specifically marked for automotive use.
- How is the output voltage of the LP2951 version adjustable?
The output voltage of the LP2951 can be programmed from 1.25 V to 29 V using external resistors.
- Does the LP2950ACZ-3.3G have a shutdown feature?
No, the LP2950 does not have a shutdown feature; this is available in the LP2951 version.
- What is the storage temperature range for the LP2950ACZ-3.3G?
The storage temperature range is -65°C to +150°C.
