Overview
The onsemi LP2951CD-3.3R2G is a micropower low dropout (LDO) linear voltage regulator designed to maintain proper regulation with an extremely low input-to-output voltage differential. This device is part of the LP2951 series, which is specifically tailored for applications requiring low quiescent bias current and high output current capability. The LP2951CD-3.3R2G is configured to provide a fixed 3.3V output voltage and is suitable for battery-powered devices, computer, consumer, and industrial equipment where extending battery life is crucial.
Key Specifications
| Parameter | Description |
|---|---|
| Manufacturer | onsemi |
| Part Number | LP2951CD-3.3R2G |
| Package | SOIC-8 |
| Output Voltage | 3.3 V (fixed) |
| Output Current | Up to 100 mA |
| Input Voltage Range | 4.3 V to 30 V |
| Quiescent Current | 75 µA (typical) |
| Dropout Voltage | 50 mV at 100 mA |
| Output Voltage Tolerance | +/- 0.5% (for 'A' suffix devices) |
| Operating Temperature Range | -40°C to +125°C |
| Compliance | RoHS compliant, ECCN: EAR99 |
Key Features
- Error Output: Signals an out of regulation condition or can be used as a microprocessor power-on reset.
- Output Programmable: Output voltage can be programmed from 1.25 V to 29 V using a resistor divider and direct access to the Error Amplifier feedback input.
- Logic Level Shutdown Input: Allows a logic level signal to turn-off or turn-on the regulator output.
- Low Quiescent Current: 75 µA (typical), which helps in extending battery life in portable devices.
- Internal Current and Thermal Limiting: Provides protection against overcurrent and overheating conditions.
- Low Dropout Voltage: 50 mV at 100 mA, ensuring efficient voltage regulation.
- Tight Line and Load Regulation: Ensures stable output voltage under varying input and load conditions.
Applications
- Battery-powered computer and consumer equipment: Ideal for extending battery life in portable devices.
- Industrial equipment: Suitable for applications requiring low dropout voltage and high output current capability.
- Automotive: Used in various automotive systems where low power consumption is critical.
- Avionics: Applicable in RADAR and other avionics systems requiring stable voltage regulation.
- Logistics Robot CPU Board: Used in robotic systems for stable power supply.
- Optical Line Card: Suitable for telecommunications equipment requiring precise voltage regulation).
Q & A
- What is the output voltage of the LP2951CD-3.3R2G? The output voltage is fixed at 3.3 V.
- What is the maximum output current of the LP2951CD-3.3R2G? The maximum output current is up to 100 mA.
- What is the input voltage range for the LP2951CD-3.3R2G? The input voltage range is from 4.3 V to 30 V.
- What is the quiescent current of the LP2951CD-3.3R2G? The quiescent current is 75 µA (typical).
- 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 operating temperature range of the LP2951CD-3.3R2G? The operating temperature range is -40°C to +125°C.
- Is the LP2951CD-3.3R2G RoHS compliant? Yes, it is RoHS compliant.
- What package type is the LP2951CD-3.3R2G available in? It is available in the SOIC-8 package.
- What are some typical applications of the LP2951CD-3.3R2G? Typical applications include battery-powered computer and consumer equipment, industrial equipment, automotive systems, and avionics).
