Overview
The LP2950ACZ-3.3RAG 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 LP2950 and LP2951 series, which are ideal 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 (3.3 V Version) | VO | 3.260 | 3.300 | 3.340 | V |
| Dropout Voltage (IO = 100 mA) | VI - VO | 350 | 450 | mV | |
| Quiescent Bias Current | ICC | 75 | 120 | μA | |
| Maximum Input Voltage | Vin | 30 | V | ||
| Maximum Output Current | IO | 100 | mA | ||
| Operating Ambient Temperature Range | TA | -40 | 125 | °C | |
| Thermal Resistance, Junction-to-Ambient | RθJA | 105 | °C/W |
Key Features
- Low Quiescent Bias Current of 75 μA
- Low Input-to-Output Voltage Differential of 50 mV at 100 μA and 380 mV at 100 mA
- Extremely Tight Line and Load Regulation
- Requires Only a 1.0 μF Output Capacitor for Stability
- Internal Current and Thermal Limiting Protection
- Shutdown Input (for LP2951 models) allows a logic level signal to turn-off or turn-on the regulator output
- Error Output (for LP2951 models) can signal external circuitry of an out-of-regulation condition or serve as a microprocessor power-on reset
- 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
Applications
The LP2950ACZ-3.3RAG is ideally suited for battery-powered devices, including:
- Computer equipment
- Consumer electronics
- Industrial equipment
- Any application requiring low power consumption and high regulation accuracy
Q & A
- What is the maximum output current of the LP2950ACZ-3.3RAG?
The maximum output current is 100 mA.
- What is the typical quiescent bias current of the LP2950ACZ-3.3RAG?
The typical quiescent bias current is 75 μA.
- What is the dropout voltage at 100 mA output current?
The dropout voltage at 100 mA output current is between 350 mV and 450 mV.
- What is the operating ambient temperature range of the LP2950ACZ-3.3RAG?
The operating ambient temperature range is from -40°C to +125°C.
- Does the LP2950ACZ-3.3RAG have internal protection features?
Yes, it has internal current and thermal limiting protection.
- Can the output voltage of the LP2950ACZ-3.3RAG be adjusted?
No, the LP2950ACZ-3.3RAG has a fixed output voltage of 3.3 V. However, the LP2951 models can be programmed for any output voltage between 1.25 V and 29 V.
- What type of packages is the LP2950 available in?
The LP2950 is available in TO-92 and DPAK packages.
- What is the thermal resistance, junction-to-ambient, for the TO-92 package?
The thermal resistance, junction-to-ambient, is 105 °C/W for the TO-92 package.
- Does the LP2950ACZ-3.3RAG require an external capacitor for stability?
Yes, it requires only a 1.0 μF output capacitor for stability.
- What are some typical applications for the LP2950ACZ-3.3RAG?
Typical applications include battery-powered computer, consumer, and industrial equipment.
