Overview
The LP2951CD-3.0G is a micropower low dropout (LDO) linear voltage regulator produced by onsemi. This device is designed to maintain proper regulation with an extremely low input-to-output voltage differential, making it ideal for battery-powered equipment where extending battery life is crucial. The LP2951CD-3.0G is part of the LP2951 series, which features a low quiescent bias current of 75 µA and can supply output currents up to 100 mA. It is available in an 8-pin SOIC package and is compliant with EU RoHS regulations.
Key Specifications
| Parameter | Min | Max | Unit | |
|---|---|---|---|---|
| Output Voltage (3.0 V Version) | 2.970 | 3.000 | 3.030 | V |
| Input Voltage Range | 4.0 | - | 30 | V |
| Output Current | - | - | 100 | mA |
| Dropout Voltage (IO = 100 mA) | 350 | - | 450 | mV |
| Quiescent Bias Current (IO = 100 mA) | 4.0 | - | 12 | mA |
| Load Regulation (IO = 100 µA to 100 mA) | -0.05 | - | 0.10 | % |
| Line Regulation (Vin = 6.0 to 30 V, IO = 100 µA to 100 mA) | -0.13 | - | 0.20 | % |
| Operating Ambient Temperature Range | -40 | - | 125 | °C |
Key Features
- Low Quiescent Bias Current: 75 µA typical, making it suitable for battery-powered devices.
- Low Dropout Voltage: 50 mV at 100 µA and 380 mV at 100 mA.
- Output Voltage Options: Available in 3.0 V, 3.3 V, and 5.0 V versions with an initial output voltage tolerance of ±0.5% for 'A' suffix devices.
- Programmable Output Voltage: Can be programmed from 1.25 V to 29 V using a resistor divider.
- Shutdown Input: Allows a logic level signal to turn-off or turn-on the regulator output.
- Errorbar Output: Signals an out-of-regulation condition or can be used as a microprocessor power-on reset.
- Internal Current and Thermal Limiting: Provides protection against overcurrent and overheating.
- Stability with Low Output Capacitance: Requires only a 1.0 µF output capacitor for stability).
Applications
- Battery-Powered Equipment: Ideal for extending the useful life of batteries in various devices).
- Consumer Electronics: Suitable for use in consumer devices where low power consumption is essential).
- Industrial Equipment: Used in industrial applications requiring stable and efficient voltage regulation).
- Automotive and Avionics: Can be used in automotive and avionics applications, such as RADAR systems and logistics robot CPU boards).
- Optical Line Cards: Applicable in optical line card systems where precise voltage regulation is necessary).
Q & A
- What is the typical quiescent bias current of the LP2951CD-3.0G?
The typical quiescent bias current is 75 µA).
- What are the available output voltage options for the LP2951 series?
The LP2951 series is available in 3.0 V, 3.3 V, and 5.0 V versions).
- Can the output voltage of the LP2951CD-3.0G be programmed?
- What is the maximum output current of the LP2951CD-3.0G?
The maximum output current is 100 mA).
- What is the dropout voltage at 100 mA for the LP2951CD-3.0G?
The dropout voltage at 100 mA is between 350 mV and 450 mV).
- Does the LP2951CD-3.0G have internal protection features?
- What is the minimum output capacitor required for stability?
- Is the LP2951CD-3.0G compliant with EU RoHS regulations?
- What is the operating ambient temperature range of the LP2951CD-3.0G?
- What are some common applications of the LP2951CD-3.0G?
