Overview
The LP2985AIM5-2.9 is a low-dropout (LDO) voltage regulator manufactured by Texas Instruments. This product is designed to provide a stable and reliable 2.9V output voltage, making it ideal for applications requiring precise voltage regulation. The LP2985AIM5-2.9 is part of Texas Instruments' LP2985 series, known for its high performance and compact design. Its market positioning targets applications in portable electronics, IoT devices, and battery-powered systems, where efficiency and small form factors are critical. The LP2985AIM5-2.9 stands out for its ultra-low dropout voltage, low quiescent current, and excellent transient response, making it a competitive choice for modern electronic designs.
Key Specifications
| Parameter | Value | Unit | Notes |
|---|---|---|---|
| Output Voltage | 2.9 | V | Fixed |
| Input Voltage Range | 2.3 to 16 | V | |
| Dropout Voltage | 80 | mV | Typical at 150mA |
| Output Current | 150 | mA | Maximum |
| Quiescent Current | 75 | µA | Typical |
| Operating Temperature Range | -40 to 125 | °C | |
| Package | SOT-23-5 | ||
| Line Regulation | 0.02 | %/V | Typical |
| Load Regulation | 0.04 | %/mA | Typical |
| PSRR | 70 | dB | At 1kHz |
Key Features
- Ultra-low dropout voltage for efficient operation.
- Low quiescent current, ideal for battery-powered applications.
- Excellent transient response ensures stable output under varying load conditions.
- Fixed output voltage of 2.9V with high accuracy.
- Compact SOT-23-5 package for space-constrained designs.
- Wide input voltage range (2.3V to 16V) for versatile applications.
- High power supply rejection ratio (PSRR) for noise-sensitive applications.
Applications
The LP2985AIM5-2.9 is widely used in various applications, including:
- Portable Electronics: Provides stable voltage for smartphones, tablets, and portable media players.
- IoT Devices: Ensures reliable power for sensors, wireless modules, and microcontrollers.
- Battery-Powered Systems: Optimizes battery life in devices like wearables and handheld instruments.
- Consumer Electronics: Used in audio devices, cameras, and other low-power gadgets.
- Industrial Applications: Suitable for control systems, instrumentation, and automation equipment.
Q & A
1. What is the dropout voltage of the LP2985AIM5-2.9?
The dropout voltage is typically 80mV at 150mA load current.
2. What is the maximum output current of this regulator?
The maximum output current is 150mA.
3. Can this regulator operate with a 3.3V input voltage?
Yes, the input voltage range is 2.3V to 16V, so 3.3V is within the operating range.
4. What is the quiescent current of the LP2985AIM5-2.9?
The quiescent current is typically 75µA.
5. Is this regulator suitable for battery-powered applications?
Yes, its low quiescent current and ultra-low dropout voltage make it ideal for battery-powered systems.
6. What is the operating temperature range?
The operating temperature range is -40°C to 125°C.
7. What package does the LP2985AIM5-2.9 come in?
It comes in a compact SOT-23-5 package.
8. Does this regulator require an external capacitor?
Yes, a small ceramic output capacitor (typically 1µF) is required for stability.
9. What is the power supply rejection ratio (PSRR) of this regulator?
The PSRR is typically 70dB at 1kHz.
10. Can the LP2985AIM5-2.9 be used in industrial applications?
Yes, its wide input voltage range and robust performance make it suitable for industrial applications.
