Overview
The LP2951CD-3.3R2G is a micropower low dropout (LDO) linear voltage regulator produced by onsemi. This device is specifically designed to maintain proper regulation with an extremely low input-to-output voltage differential. It features a very low quiescent bias current of 75 µA and is capable of supplying output currents in excess of 100 mA. The LP2951CD-3.3R2G is ideal for battery-powered computer, consumer, and industrial equipment where extending the useful battery life is desirable.
Key Specifications
| Parameter | Value |
|---|---|
| Manufacturer | onsemi |
| Type of Integrated Circuit | Voltage Regulator |
| Kind of Voltage Regulator | Fixed, LDO, Linear |
| Output Voltage | 3.3 V |
| Output Current | 100 mA |
| Input Voltage Range | 1.25 V to 30 V |
| Case | SOIC-8 |
| Mounting | Surface Mount |
| Operating Temperature Range | -40°C to +125°C |
| Tolerance | ±1% |
| Quiescent Current | 75 µA |
| Line Regulation | 0.2% |
| Load Regulation | 0.2% |
| Current Limit | 300 mA |
| Output Noise | 126 µV |
Key Features
- Low quiescent bias current of 75 µA, making it suitable for battery-powered devices.
- Low input-to-output voltage differential, ensuring efficient regulation.
- Internal current and thermal limiting protection for enhanced reliability.
- Error Output that can signal external circuitry of an out-of-regulation condition or serve as a microprocessor power-on reset.
- Output voltage can be preset to 3.3 V or programmed from 1.25 V to 29 V using a resistor divider.
- Logic level Shutdown input to turn the regulator on or off.
- Requires only a 1.0 µF output capacitor for stability.
- Tight line and load regulation, ensuring stable output voltage under varying conditions.
Applications
- Battery-powered computer and consumer equipment where extending battery life is crucial.
- Industrial equipment requiring low power consumption and high reliability.
- Automotive applications, including RADAR systems.
- AC Analog Input Modules and Logistics Robot CPU Boards.
- Optical Line Cards and other precision electronics).
Q & A
- What is the output voltage of the LP2951CD-3.3R2G?
The output voltage of the LP2951CD-3.3R2G is 3.3 V.
- What is the maximum output current of the LP2951CD-3.3R2G?
The maximum output current is 100 mA).
- What is the quiescent current of the LP2951CD-3.3R2G?
The quiescent current is 75 µA).
- What is the operating temperature range of the LP2951CD-3.3R2G?
The operating temperature range is -40°C to +125°C).
- What package type is the LP2951CD-3.3R2G available in?
The device is available in an SOIC-8 package).
- Does the LP2951CD-3.3R2G have internal protection features?
Yes, it has internal current and thermal limiting protection).
- Can the output voltage of the LP2951CD-3.3R2G be programmed?
Yes, the output voltage can be programmed from 1.25 V to 29 V using a resistor divider).
- What is the purpose of the Error Output feature in the LP2951CD-3.3R2G?
The Error Output can signal external circuitry of an out-of-regulation condition or serve as a microprocessor power-on reset).
- Does the LP2951CD-3.3R2G have a Shutdown input feature?
Yes, it has a logic level Shutdown input to turn the regulator on or off).
- What is the recommended output capacitor for stability?
A 1.0 µF output capacitor is recommended for stability).
