Overview
The LP2950ACZ-5.0RAG 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, making it ideal for battery-powered equipment where extending battery life is crucial. The LP2950 series features a very low quiescent bias current of 75 µA and can supply output currents in excess of 100 mA. It also includes internal current and thermal limiting protection for enhanced reliability.
Key Specifications
| Characteristic | Symbol | Min | Max | Unit | |
|---|---|---|---|---|---|
| Output Voltage (5.0 V Version) | VO | 4.940 | 5.000 | 5.060 | V |
| Input-to-Output Voltage Differential | VI - VO | 50 | - | 380 | mV |
| Quiescent Bias Current | ICC | 93 | - | 120 | µA |
| Output Current | IO | - | - | 100 | mA |
| Operating Ambient Temperature Range | TA | -40 | - | 125 | °C |
| Maximum Die Junction Temperature | TJ | - | - | 150 | °C |
| Storage Temperature Range | Tstg | -65 | - | 150 | °C |
Key Features
- Low Quiescent Bias Current: 75 µA, which helps in extending battery life in portable devices.
- Low Input-to-Output Voltage Differential: 50 mV at 100 mA and 380 mV at 100 mA, ensuring efficient voltage regulation.
- Precise Output Voltage: Available in fixed output voltages of 5.0 V, 3.3 V, and 3.0 V with an initial output voltage tolerance of ±0.5% for 'A' suffix devices.
- Adjustable Output Voltage: The LP2951 version can be programmed for any output voltage between 1.25 V and 29 V using external resistors.
- Internal Protection: Includes internal current and thermal limiting protection to prevent device damage.
- Shutdown Feature: The LP2951 has a shutdown input that allows a logic level signal to turn-off or turn-on the regulator output.
- Error Output: The LP2951 features an error output that can signal external circuitry of an out-of-regulation condition or serve as a microprocessor power-on reset.
Applications
The LP2950ACZ-5.0RAG is ideally suited for battery-powered computer, consumer, and industrial equipment. Its low quiescent bias current and low input-to-output voltage differential make it particularly useful in applications where extending the useful battery life is desirable.
- Battery-powered devices
- Portable electronics
- Consumer electronics
- Industrial equipment
Q & A
- What is the typical quiescent bias current of the LP2950ACZ-5.0RAG?
The typical quiescent bias current is 75 µA.
- What are the available fixed output voltages for the LP2950ACZ?
The available fixed output voltages are 5.0 V, 3.3 V, and 3.0 V.
- Can the output voltage of the LP2951 be adjusted?
- What is the maximum output current of the LP2950ACZ-5.0RAG?
The maximum output current is 100 mA.
- Does the LP2950ACZ-5.0RAG have internal protection features?
- What is the operating ambient temperature range of the LP2950ACZ-5.0RAG?
The operating ambient temperature range is -40°C to +125°C.
- What is the purpose of the Error Output in the LP2951?
The Error Output can signal external circuitry of an out-of-regulation condition or serve as a microprocessor power-on reset.
- How can the regulator output be controlled in the LP2951?
The regulator output can be turned-off or turned-on using a logic level signal through the Shutdown input.
- What is the storage temperature range for the LP2950ACZ-5.0RAG?
The storage temperature range is -65°C to +150°C.
- What type of packages is the LP2950 available in?
The LP2950 is available in three-pin case 29 and DPAK packages.
