Overview
The LP2985IM5-1.5 is a low-dropout (LDO) voltage regulator manufactured by National Semiconductor. Designed for applications requiring a stable and reliable power supply, this component is part of the LP2985 series, known for its low noise and high accuracy. The LP2985IM5-1.5 is specifically tailored for portable and battery-powered devices, making it an ideal choice for consumer electronics, medical devices, and industrial applications. Its compact SOT-23-5 package and low quiescent current make it highly competitive in the market for power management solutions.
Key Specifications
| Parameter | Value | Unit | Notes |
|---|---|---|---|
| Output Voltage | 1.5 | V | Fixed |
| Input Voltage Range | 2.3 to 16 | V | |
| Dropout Voltage | 0.28 | V | @ 150 mA |
| Output Current | 150 | mA | |
| Quiescent Current | 75 | µA | |
| Package | SOT-23-5 | ||
| Operating Temperature Range | -40 to +125 | °C | |
| Line Regulation | 0.02 | %/V | |
| Load Regulation | 0.04 | %/mA | |
| Ripple Rejection | 70 | dB | @ 1 kHz |
Key Features
- Low Dropout Voltage: Ensures efficient operation even with small input-output differentials.
- Low Noise Output: Ideal for noise-sensitive applications like RF and audio circuits.
- High Accuracy: Provides precise voltage regulation for critical applications.
- Low Quiescent Current: Extends battery life in portable devices.
- Thermal Shutdown and Current Limit Protection: Enhances reliability and safety.
Applications
The LP2985IM5-1.5 is widely used in various fields, including:
- Consumer Electronics: Power management for smartphones, tablets, and portable media players.
- Medical Devices: Reliable power supply for portable medical equipment.
- Industrial Automation: Stable voltage regulation for sensors and control systems.
- Automotive Electronics: Power management for infotainment and navigation systems.
Q & A
1. What is the output voltage of the LP2985IM5-1.5?
The output voltage is fixed at 1.5 V.
2. What is the input voltage range for this regulator?
The input voltage range is 2.3 V to 16 V.
3. What is the dropout voltage at 150 mA?
The dropout voltage is 0.28 V at 150 mA.
4. What is the maximum output current?
The maximum output current is 150 mA.
5. What is the quiescent current of this device?
The quiescent current is 75 µA.
6. What package does the LP2985IM5-1.5 come in?
It comes in a SOT-23-5 package.
7. What is the operating temperature range?
The operating temperature range is -40°C to +125°C.
8. Does this regulator have thermal shutdown protection?
Yes, it includes thermal shutdown and current limit protection.
9. What is the ripple rejection at 1 kHz?
The ripple rejection is 70 dB at 1 kHz.
10. Is the LP2985IM5-1.5 suitable for battery-powered devices?
Yes, its low quiescent current and dropout voltage make it ideal for battery-powered applications.
