Overview
The LP2951ACD-3.3R2R is a micropower voltage regulator produced by onsemi. This device is part of the LP2951 series, which is designed to maintain proper regulation with an extremely low input-to-output voltage differential. It is particularly suited for battery-powered devices and applications where extending battery life is crucial.
Key Specifications
| Characteristic | Symbol | Min | Typ | Max | Unit |
|---|---|---|---|---|---|
| Output Voltage | VO | 3.260 | 3.300 | 3.340 | V |
| Output Current | IO | 100 | mA | ||
| Input Voltage | Vin | 30 | V | ||
| Dropout Voltage | VI - VO | 350 | 450 | mV @ 100 mA | |
| Quiescent Bias Current | ICC | 4.0 | 12 | mA @ 100 mA | |
| Operating Temperature Range | TA | -40 | 125 | °C | |
| Package Type | SOIC-8, Micro8 |
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.
- High Accuracy Output Voltage: ±0.5% initial output voltage tolerance for 'A' suffix devices.
- Internal Current and Thermal Limiting Protection: Ensures device safety under overload conditions.
- Error Output and Shutdown Input: Available in LP2951 models, allowing for external circuitry signaling and power-on reset capabilities.
- Programmable Output Voltage: Can be set to 5.0 V, 3.3 V, or 3.0 V, or programmed from 1.25 V to 29 V.
- Low Noise Operation: Requires only a 1.0 μF output capacitor for stability.
Applications
The LP2951ACD-3.3R2R is ideal for use in battery-powered computer, consumer, and industrial equipment where low power consumption and extended battery life are critical. It is also suitable for applications requiring high accuracy and low dropout voltage, such as:
- Battery-powered devices
- Portable electronics
- Consumer electronics
- Industrial control systems
Q & A
- What is the typical output voltage of the LP2951ACD-3.3R2R?
The typical output voltage is 3.3 V.
- What is the maximum output current of the LP2951ACD-3.3R2R?
The maximum output current is 100 mA.
- What is the input voltage range for the LP2951ACD-3.3R2R?
The input voltage range is up to 30 V.
- What is the quiescent bias current of the LP2951ACD-3.3R2R?
The quiescent bias current is 75 μA.
- Does the LP2951ACD-3.3R2R have internal protection features?
Yes, it has internal current and thermal limiting protection.
- What is the operating temperature range of the LP2951ACD-3.3R2R?
The operating temperature range is -40°C to 125°C.
- Can the output voltage of the LP2951ACD-3.3R2R be programmed?
Yes, the output voltage can be programmed from 1.25 V to 29 V.
- What type of package is the LP2951ACD-3.3R2R available in?
The device is available in SOIC-8 and Micro8 surface mount packages.
- Does the LP2951ACD-3.3R2R have a shutdown feature?
Yes, it has a shutdown input that allows a logic level signal to turn-off or turn-on the regulator output.
- What is the typical dropout voltage of the LP2951ACD-3.3R2R at 100 mA output current?
The typical dropout voltage is between 350 mV to 450 mV at 100 mA output current.
