Overview
The LP2951CDG is a micropower voltage regulator produced by onsemi, designed to maintain proper regulation with an extremely low input-to-output voltage differential. This device is part of the LP2951 series, which features a very low quiescent bias current of 75 μA and is capable of supplying output currents in excess of 100 mA. The LP2951CDG is particularly suited for battery-powered computer, consumer, and industrial equipment where extending the useful battery life is desirable.
Key Specifications
| Characteristic | Symbol | Min | Typ | Max | Unit |
|---|---|---|---|---|---|
| Output Voltage (5.0 V Versions) | VO | 4.950 | 5.000 | 5.050 | V |
| Output Voltage (3.3 V Versions) | VO | 3.267 | 3.300 | 3.333 | V |
| Output Voltage (3.0 V Versions) | VO | 2.970 | 3.000 | 3.030 | V |
| Dropout Voltage (IO = 100 mA) | VI - VO | 350 | 450 | mV | |
| Supply Bias Current (IO = 100 mA) | ICC | 4.0 | 12 | mA | |
| Operating Ambient Temperature Range | TA | -40 | 125 | °C | |
| Maximum Die Junction Temperature Range | TJ | 150 | °C | ||
| Storage Temperature Range | Tstg | -65 | 150 | °C |
Key Features
- Low Quiescent Bias Current: 75 μA, making it ideal for battery-powered devices.
- Low Input-to-Output Voltage Differential: 50 mV at 100 μA and 380 mV at 100 mA.
- Programmable Output Voltage: From 1.25 V to 29 V using a pinned-out resistor divider.
- Error Output: Signals an out-of-regulation condition or can be used as a microprocessor power-on reset.
- Logic Level Shutdown Input: Allows turning the regulator output on or off with a logic level signal.
- Internal Current and Thermal Limiting Protection: Ensures device safety and reliability.
- Tight Line and Load Regulation: Maintains stable output voltage across various input and load conditions.
- Pb-Free and RoHS Compliant: Environmentally friendly and compliant with regulatory standards.
- AEC-Q100 Qualified and PPAP Capable: Suitable for automotive and other applications requiring unique site and control change requirements.
Applications
The LP2951CDG is ideally suited for a variety of applications, including:
- Battery-powered computer systems
- Consumer electronics
- Industrial equipment
- Automotive systems (with NCV prefix)
- Any application requiring low power consumption and high efficiency voltage regulation
Q & A
- What is the typical quiescent bias current of the LP2951CDG?
The typical quiescent bias current is 75 μA.
- What is the maximum output current the LP2951CDG can supply?
The LP2951CDG can supply output currents in excess of 100 mA.
- What are the available output voltage options for the LP2951CDG?
The output voltage can be preset to 5.0 V, 3.3 V, or 3.0 V, or programmed from 1.25 V to 29 V.
- Does the LP2951CDG have built-in protection features?
- How does the error output feature work on the LP2951CDG?
The error output signals an out-of-regulation condition and can be used as a microprocessor power-on reset.
- What is the operating ambient temperature range for the LP2951CDG?
The operating ambient temperature range is from -40°C to +125°C.
- Is the LP2951CDG Pb-Free and RoHS compliant?
- What packages are available for the LP2951CDG?
The LP2951CDG is available in SOIC-8, PDIP-8, and Micro8 surface mount packages.
- Can the LP2951CDG be used in automotive applications?
- How does the shutdown input feature work on the LP2951CDG?
The shutdown input allows a logic level signal to turn the regulator output on or off.
