Overview
The LP2985AIBPX-2.4 is a low-dropout (LDO) voltage regulator produced by National Semiconductor. Designed for applications requiring a stable and precise voltage supply, this LDO regulator offers a fixed output voltage of 2.4V. It is well-suited for portable devices, battery-powered systems, and other applications where power efficiency and reliability are critical. The LP2985AIBPX-2.4 stands out for its low dropout voltage, low quiescent current, and excellent transient response, making it a competitive choice in the LDO market.
Key Specifications
| Parameter | Value | Unit | Notes |
|---|---|---|---|
| Output Voltage | 2.4 | V | Fixed |
| Output Current | 150 | mA | Max |
| Dropout Voltage | 280 | mV | Typical at 150mA |
| Quiescent Current | 85 | µA | Typical |
| Input Voltage Range | 2.5 to 16 | V | |
| Operating Temperature Range | -40 to +125 | °C | |
| Package | SOT-23 | 5-pin | |
| Line Regulation | 0.02 | %/V | Typical |
| Load Regulation | 0.04 | %/mA | Typical |
| PSRR | 70 | dB | At 1kHz |
Key Features
- Low Dropout Voltage: Ensures efficient operation even with small input-output differentials.
- Low Quiescent Current: Enhances battery life in portable applications.
- Stable Output: Provides a precise 2.4V output with minimal fluctuations.
- Thermal Shutdown Protection: Safeguards the device from overheating.
- Compact SOT-23 Package: Ideal for space-constrained designs.
Applications
The LP2985AIBPX-2.4 is widely used in various applications, including:
- Portable Electronics: Such as smartphones, tablets, and wearable devices, where stable voltage and low power consumption are essential.
- Battery-Powered Systems: Including wireless sensors and IoT devices, benefiting from its low quiescent current.
- Consumer Electronics: Such as digital cameras and audio players, ensuring reliable performance.
- Industrial Equipment: For powering low-voltage circuits in control systems and instrumentation.
Q & A
1. What is the output voltage of the LP2985AIBPX-2.4?
The output voltage is fixed at 2.4V.
2. What is the maximum output current?
The maximum output current is 150mA.
3. What is the dropout voltage at 150mA?
The dropout voltage is typically 280mV at 150mA.
4. What is the operating temperature range?
The operating temperature range is -40°C to +125°C.
5. What package does the LP2985AIBPX-2.4 use?
It uses a 5-pin SOT-23 package.
6. Is this LDO regulator suitable for battery-powered devices?
Yes, its low quiescent current makes it ideal for battery-powered applications.
7. Does it have thermal shutdown protection?
Yes, it includes thermal shutdown protection to prevent overheating.
8. What is the typical PSRR of this device?
The typical PSRR is 70dB at 1kHz.
9. Can it handle input voltages up to 16V?
Yes, the input voltage range is 2.5V to 16V.
10. What are its key advantages over other LDO regulators?
Its low dropout voltage, low quiescent current, and compact package make it highly competitive.
