Overview
The LP2985IM5X-3.8/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 ultra-low dropout voltage and low quiescent current. The LP2985IM5X-3.8/NOPB is specifically tailored for portable and battery-powered devices, offering a fixed output voltage of 3.8V. Its compact SOT-23-5 package makes it ideal for space-constrained designs, while its robust performance ensures reliability in various operating conditions.
Key Specifications
| Parameter | Value | Unit | Notes |
|---|---|---|---|
| Output Voltage | 3.8 | V | Fixed |
| Output Current | 150 | mA | Maximum |
| Dropout Voltage | 300 | mV | Typical at 150mA |
| Input Voltage Range | 2.3 to 16 | V | |
| 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: Ensures efficient operation even with small input-output differentials.
- Low Quiescent Current: Ideal for battery-powered applications, extending battery life.
- Fixed Output Voltage: Provides a stable 3.8V output, eliminating the need for external components.
- Wide Input Voltage Range: Supports operation from 2.3V to 16V, accommodating various power sources.
- Compact Package: SOT-23-5 package is suitable for space-constrained designs.
- High PSRR: Excellent noise rejection, ensuring clean output voltage.
Applications
The LP2985IM5X-3.8/NOPB is widely used in applications requiring a stable and efficient voltage supply. Key application areas include:
- Portable Electronics: Smartphones, tablets, and wearable devices benefit from its low quiescent current and compact size.
- Battery-Powered Devices: Extends battery life in devices such as wireless sensors and IoT modules.
- Consumer Electronics: Provides reliable voltage regulation in cameras, audio devices, and other consumer gadgets.
- Industrial Equipment: Ensures stable operation in industrial sensors, controllers, and communication modules.
Q & A
1. What is the maximum output current of the LP2985IM5X-3.8/NOPB?
The maximum output current is 150mA.
2. What is the dropout voltage of this regulator?
The typical dropout voltage is 300mV at 150mA.
3. Can this regulator operate with a 5V input?
Yes, it can operate with input voltages ranging from 2.3V to 16V.
4. What is the quiescent current of the LP2985IM5X-3.8/NOPB?
The typical quiescent current is 75µA.
5. Is the output voltage adjustable?
No, the output voltage is fixed at 3.8V.
6. What is the operating temperature range?
The operating temperature range is -40°C to +125°C.
7. What package does this regulator use?
It uses the SOT-23-5 package.
8. How does the LP2985IM5X-3.8/NOPB perform in noise-sensitive applications?
It has a high PSRR of 70dB at 1kHz, making it suitable for noise-sensitive applications.
9. Can this regulator be used in automotive applications?
Yes, its wide input voltage range and robust performance make it suitable for automotive electronics.
10. What are the typical applications of this regulator?
Typical applications include portable electronics, battery-powered devices, consumer electronics, and industrial equipment.
