Overview
The LP2985AITP-2.9/NOPB is a low-dropout (LDO) voltage regulator manufactured by Texas Instruments. Designed for applications requiring a stable and precise voltage supply, this regulator is part of the LP2985 series, known for its low dropout voltage and high accuracy. The LP2985AITP-2.9/NOPB is specifically tailored for use in portable and battery-powered devices, offering excellent performance in space-constrained environments. Its key selling points include low quiescent current, high PSRR (Power Supply Rejection Ratio), and thermal shutdown protection, making it a competitive choice for modern electronics.
Key Specifications
| Parameter | Value | Unit | Notes |
|---|---|---|---|
| Output Voltage | 2.9 | V | Fixed |
| Output Current | 150 | mA | Maximum |
| Dropout Voltage | 300 | mV | Typical at 150 mA |
| Input Voltage Range | 2.5 to 16 | V | |
| Quiescent Current | 75 | µA | Typical |
| PSRR | 70 | dB | At 1 kHz |
| Operating Temperature Range | -40 to +125 | °C | |
| Package | SOT-23-5 | ||
| Thermal Shutdown | Yes | Built-in protection | |
| Line Regulation | 0.02 | %/V | Typical |
Key Features
- Low Dropout Voltage: Ensures efficient operation even with minimal input-output differential.
- Low Quiescent Current: Ideal for battery-powered applications, extending battery life.
- High PSRR: Provides excellent noise rejection, ensuring stable output voltage.
- Thermal Shutdown Protection: Safeguards the device from overheating.
- Compact SOT-23-5 Package: Suitable for space-constrained designs.
Applications
The LP2985AITP-2.9/NOPB is widely used in various applications, including:
- Portable Electronics: Such as smartphones, tablets, and wearable devices, where low power consumption and small form factors are critical.
- Battery-Powered Devices: Including remote controls, wireless sensors, and medical devices, benefiting from its low quiescent current.
- Industrial Equipment: Used in control systems and instrumentation requiring stable voltage regulation.
- Consumer Electronics: Such as cameras, audio devices, and gaming consoles, where noise-free power supply is essential.
Q & A
1. What is the output voltage of the LP2985AITP-2.9/NOPB?
The output voltage is fixed at 2.9 V.
2. What is the maximum output current?
The maximum output current is 150 mA.
3. What is the dropout voltage at 150 mA?
The dropout voltage is typically 300 mV at 150 mA.
4. What is the input voltage range?
The input voltage range is 2.5 V to 16 V.
5. What is the quiescent current?
The quiescent current is typically 75 µA.
6. What is the PSRR of this regulator?
The PSRR is 70 dB at 1 kHz.
7. Does it have thermal shutdown protection?
Yes, it includes built-in thermal shutdown protection.
8. What is the operating temperature range?
The operating temperature range is -40°C to +125°C.
9. What package does it come in?
It is available in a SOT-23-5 package.
10. Is this regulator suitable for battery-powered devices?
Yes, its low quiescent current and low dropout voltage make it ideal for battery-powered applications.
