Overview
The LP2951ACD-3.3R2G 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. It features a very low quiescent bias current of 75 µA and is capable of supplying output currents in excess of 100 mA. The LP2951 series includes internal current and thermal limiting protection, making it suitable for battery-powered computer, consumer, and industrial equipment where extending battery life is crucial.
Key Specifications
| Parameter | Value | Unit |
|---|---|---|
| Output Voltage | 3.3 | V |
| Output Voltage Tolerance | ±0.5% | % |
| Input Voltage Range | 2.3 to 30 | V |
| Output Current | Up to 100 | mA |
| Quiescent Current | 75 | µA |
| Dropout Voltage | 50 mV at 100 mA, 380 mV at 100 mA | mV |
| Operating Ambient Temperature Range | -40 to +125 | °C |
| Package Type | SOIC-8 | |
| Thermal Resistance, Junction-to-Ambient | 105 | °C/W |
Key Features
- Low quiescent bias current of 75 µA
- Low input-to-output voltage differential of 50 mV at 100 mA and 380 mV at 100 mA
- Output voltage programmable from 1.25 V to 29 V or preset to 5.0 V, 3.3 V, or 3.0 V
- Errorbar Output to signal out-of-regulation conditions or as a microprocessor power-on reset
- Logic level Shutdown input to turn-off or turn-on the regulator output
- Extremely tight line and load regulation
- Requires only a 1.0 µF output capacitor for stability
- Internal current and thermal limiting protection
Applications
- Battery-powered computer equipment
- Consumer electronics
- Industrial equipment
- Automotive systems
- Avionics, such as RADAR systems
- AC Analog Input Modules
- Logistics Robot CPU Boards
- Optical Line Cards
Q & A
- What is the output voltage of the LP2951ACD-3.3R2G?
The output voltage of the LP2951ACD-3.3R2G is 3.3 V with a tolerance of ±0.5%.
- What is the input voltage range for this regulator?
The input voltage range is from 2.3 V to 30 V.
- What is the maximum output current of the LP2951ACD-3.3R2G?
The maximum output current is up to 100 mA.
- What is the quiescent current of this regulator?
The quiescent current is 75 µA.
- What are the key features of the LP2951 series?
The key features include low quiescent bias current, low input-to-output voltage differential, programmable output voltage, Errorbar Output, logic level Shutdown input, tight line and load regulation, and internal current and thermal limiting protection.
- What type of package is the LP2951ACD-3.3R2G available in?
The LP2951ACD-3.3R2G is available in the SOIC-8 package.
- What is the operating ambient temperature range for this regulator?
The operating ambient temperature range is from -40°C to +125°C.
- What applications is the LP2951ACD-3.3R2G suitable for?
It is suitable for battery-powered computer equipment, consumer electronics, industrial equipment, automotive systems, avionics, AC Analog Input Modules, Logistics Robot CPU Boards, and Optical Line Cards.
- Does the LP2951ACD-3.3R2G have internal protection features?
Yes, it includes internal current and thermal limiting protection.
- What is the thermal resistance, junction-to-ambient, for the SOIC-8 package?
The thermal resistance, junction-to-ambient, is 105°C/W.
