Overview
The LP2985AIM5-4.0 is a low-dropout (LDO) voltage regulator manufactured by Texas Instruments. Designed for applications requiring high accuracy and low power consumption, this component is ideal for portable electronics, IoT devices, and battery-powered systems. The LP2985AIM5-4.0 provides a fixed output voltage of 4.0V with a maximum output current of 150mA, making it suitable for powering sensitive analog and digital circuits. Its compact SOT-23-5 package ensures space efficiency, while its low dropout voltage and low quiescent current enhance energy efficiency, making it a competitive choice for modern electronic designs.
Key Specifications
| Parameter | Value | Unit | Notes |
|---|---|---|---|
| Output Voltage | 4.0 | V | Fixed |
| Output Current | 150 | mA | Maximum |
| Dropout Voltage | 300 | mV | Typical at 150mA |
| Input Voltage Range | 2.5 to 16 | V | |
| Quiescent Current | 85 | 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 | 60 | dB | at 1kHz |
Key Features
- Low Dropout Voltage: Ensures efficient operation even with small input-output differentials.
- Low Quiescent Current: Minimizes power consumption in standby or idle modes.
- High Accuracy Output: Provides precise voltage regulation for sensitive applications.
- Compact Package: SOT-23-5 package saves board space in compact designs.
- Wide Input Voltage Range: Supports diverse power sources, including batteries and DC supplies.
- Thermal Shutdown Protection: Safeguards the device from overheating.
Applications
The LP2985AIM5-4.0 is widely used in applications requiring stable and efficient voltage regulation. Typical use cases include:
- Portable Electronics: Powering microcontrollers, sensors, and wireless modules in handheld devices.
- IoT Devices: Ensuring reliable operation in low-power, battery-driven IoT nodes.
- Battery-Powered Systems: Extending battery life in consumer electronics and medical devices.
- Analog Circuits: Providing clean power to amplifiers, ADCs, and other analog components.
- Automotive Electronics: Supporting infotainment systems and sensors in vehicles.
Q & A
1. What is the maximum output current of the LP2985AIM5-4.0?
The maximum output current is 150mA.
2. What is the dropout voltage at 150mA?
The dropout voltage is typically 300mV at 150mA.
3. What is the input voltage range for this regulator?
The input voltage range is 2.5V to 16V.
4. Is the output voltage fixed or adjustable?
The output voltage is fixed at 4.0V.
5. What is the quiescent current of the LP2985AIM5-4.0?
The quiescent current is typically 85µA.
6. What package does this regulator come in?
It comes in a SOT-23-5 package.
7. Does the LP2985AIM5-4.0 include thermal protection?
Yes, it features thermal shutdown protection.
8. What is the typical PSRR of this regulator?
The typical PSRR is 60dB at 1kHz.
9. Can this regulator be used in automotive applications?
Yes, it is suitable for automotive electronics, provided it operates within the specified temperature range.
10. What is the operating temperature range of the LP2985AIM5-4.0?
The operating temperature range is -40°C to +125°C.
