Overview
The LP2951CNG is a micropower low dropout (LDO) linear voltage regulator produced by onsemi. It is designed to maintain proper regulation with an extremely low input-to-output voltage differential. This device features a very low quiescent bias current of 75 µA and is capable of supplying output currents in excess of 100 mA. The LP2951CNG includes internal current and thermal limiting protection, making it suitable for a variety of applications where power efficiency and reliability are crucial.
Key Specifications
| Parameter | Value | Unit |
|---|---|---|
| Output Voltage | 3.0 V, 3.3 V, 5.0 V (or programmable from 1.25 V to 29 V) | V |
| Maximum Output Current | 100 mA | mA |
| Maximum Input Voltage | 30 V | V |
| Typical Quiescent Current | 75 µA | µA |
| Maximum Dropout Voltage at 100 mA | 380 mV | mV |
| Line Regulation | 0.20% (typical) | % |
| Load Regulation | 0.20% (typical) | % |
| Operating Ambient Temperature Range | -40°C to +125°C | °C |
| Storage Temperature Range | -65°C to +150°C | °C |
| Package Types | DIP-8, SO-8, Micro-8 |
Key Features
- Error Output: Signals an out of regulation condition or can be used as a microprocessor power-on reset.
- Output Programmability: 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.
- Logic Level Shutdown Input: Allows a logic level signal to turn-off or turn-on the regulator output.
- Low Dropout Voltage: 50 mV at 100 mA and 380 mV at 100 mA.
- Low Quiescent Current: 75 µA (typical).
- Internal Current and Thermal Limiting Protection.
- Tight Line and Load Regulation.
- Requires only a 1.0 µF output capacitor for stability.
Applications
- Battery-powered computer, consumer, and industrial equipment where extending battery life is desirable.
- Automotive applications.
- Avionics, such as RADAR systems.
- AC Analog Input Modules.
- Logistics Robot CPU Boards.
- Optical Line Cards.
Q & A
- What is the maximum output current of the LP2951CNG?
The maximum output current is 100 mA.
- What are the available output voltage options for the LP2951CNG?
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.
- What is the typical quiescent current of the LP2951CNG?
The typical quiescent current is 75 µA.
- Does the LP2951CNG have internal protection features?
- What is the operating ambient temperature range of the LP2951CNG?
The operating ambient temperature range is -40°C to +125°C.
- What types of packages are available for the LP2951CNG?
The device is available in DIP-8, SO-8, and Micro-8 packages.
- Can the LP2951CNG be used in automotive applications?
- What is the purpose of the Error Output feature in the LP2951CNG?
The Error Output can signal an out of regulation condition or be used as a microprocessor power-on reset.
- How can the output of the LP2951CNG be controlled?
The output can be controlled using a logic level shutdown input and by programming the output voltage.
- Is the LP2951CNG RoHS compliant?
