Overview
The LP2950CDT-5.0G is a micropower voltage regulator produced by onsemi, designed to provide low power, low dropout voltage regulation. This device is part of the LP2950 and LP2951 series, which are specifically engineered to maintain proper regulation with an extremely low input-to-output voltage differential. The LP2950CDT-5.0G is particularly suited for battery-powered computer, consumer, and industrial equipment where extending the useful battery life is crucial.
Key Specifications
| Characteristic | Symbol | Min | Typ | Max | Unit |
|---|---|---|---|---|---|
| Output Voltage (5.0 V Version) | VO | 4.950 | 5.000 | 5.050 | V |
| Output Voltage Tolerance (TA = 25°C) | 4.975 | 5.000 | 5.025 | V | |
| Output Voltage Tolerance (TA = -40 to +125°C) | 4.940 | 5.000 | 5.060 | V | |
| Dropout Voltage (IO = 100 mA) | VI - VO | 350 | 450 | mV | |
| Supply Bias Current (IO = 100 mA) | ICC | 4.0 | 12 | mA | |
| Current Limit (VO Shorted to Ground) | ILimit | 220 | 300 | 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.
- Tight Line and Load Regulation: Ensures stable output voltage across various input and load conditions.
- Internal Current and Thermal Limiting: Protects the device from overcurrent and overheating.
- Shutdown Input: Allows a logic level signal to turn off or turn on the regulator output (available on LP2951 models).
- Error Output: Signals external circuitry of an out-of-regulation condition or can be used as a microprocessor power-on reset (available on LP2951 models).
- Adjustable Output Voltage: Can be programmed from 1.25 V to 29 V (available on LP2951 models).
- Requires Only a 1.0 μF Output Capacitor for Stability: Simplifies the design and reduces component count.
Applications
The LP2950CDT-5.0G is suitable for a variety of applications, including:
- Battery-powered computer and consumer electronics.
- Industrial equipment where low power consumption and extended battery life are essential.
- Devices requiring low dropout voltage and tight line and load regulation.
- Circuits needing internal current and thermal protection.
Q & A
- What is the typical output voltage of the LP2950CDT-5.0G?
The typical output voltage is 5.0 V. - What is the quiescent bias current of the LP2950CDT-5.0G?
The quiescent bias current is 75 μA. - What is the dropout voltage at 100 mA output current?
The dropout voltage is between 350 mV and 450 mV. - Does the LP2950CDT-5.0G have internal current and thermal limiting?
Yes, it does. - What is the operating ambient temperature range of the LP2950CDT-5.0G?
The operating ambient temperature range is -40°C to +125°C. - Can the output voltage of the LP2950CDT-5.0G be adjusted?
No, the LP2950CDT-5.0G has a fixed output voltage of 5.0 V. However, the LP2951 models can have adjustable output voltages. - What type of capacitor is required for stability?
A 1.0 μF capacitor is required between the output terminal and ground for stability. - Is the LP2950CDT-5.0G suitable for automotive applications?
The NCV prefix versions are suitable for automotive and other applications requiring unique site and control change requirements. - Does the LP2950CDT-5.0G have a shutdown feature?
No, the shutdown feature is available on the LP2951 models. - What is the maximum die junction temperature of the LP2950CDT-5.0G?
The maximum die junction temperature is 150°C.
