Overview
The LP2985IM5-4.0 is a low-dropout (LDO) voltage regulator manufactured by Texas Instruments. Designed for applications requiring a stable and precise 4.0V output, this compact and efficient regulator is ideal for portable electronics, IoT devices, and other low-power systems. Its market positioning targets designers seeking high reliability, low noise, and minimal power consumption in a small form factor. The LP2985IM5-4.0 stands out for its ultra-low dropout voltage, low quiescent current, and excellent transient response, making it a competitive choice for battery-powered applications.
Key Specifications
| Parameter | Value | Unit | Notes |
|---|---|---|---|
| Output Voltage | 4.0 | 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 | 85 | µA | Typical |
| Line Regulation | 0.02 | %/V | Typical |
| Load Regulation | 0.1 | %/mA | Typical |
| Operating Temperature Range | -40 to +125 | °C | |
| Package | SOT-23-5 | Miniature package | |
| Features | Low Noise, Thermal Shutdown, Current Limit |
Key Features
- Ultra-Low Dropout Voltage: Ensures efficient operation even with low input voltages, extending battery life.
- Low Quiescent Current: Minimizes power consumption in standby or idle modes.
- Low Noise Output: Ideal for noise-sensitive applications such as audio and RF circuits.
- Thermal Shutdown Protection: Safeguards the device from overheating.
- Current Limit Protection: Protects the regulator and downstream components from overcurrent conditions.
Applications
The LP2985IM5-4.0 is widely used in various applications, including:
- Portable Electronics: Smartphones, tablets, and wearable devices benefit from its compact size and low power consumption.
- IoT Devices: Ensures stable voltage for sensors, microcontrollers, and wireless modules.
- Consumer Electronics: Used in audio devices, cameras, and other low-power gadgets.
- Industrial Systems: Provides reliable voltage regulation in control systems and instrumentation.
- Automotive Electronics: Suitable for infotainment systems and low-power automotive modules.
Q & A
1. What is the output voltage of the LP2985IM5-4.0?
The output voltage is fixed at 4.0V.
2. What is the maximum output current?
The maximum output current is 150 mA.
3. What is the dropout voltage of this regulator?
The typical dropout voltage is 300 mV at 150 mA.
4. Can the LP2985IM5-4.0 operate with a battery input?
Yes, it is designed for battery-powered applications with an input voltage range of 2.5V to 16V.
5. What is the quiescent current of this device?
The typical quiescent current is 85 µA.
6. Does it include thermal protection?
Yes, it features thermal shutdown protection to prevent overheating.
7. What package does the LP2985IM5-4.0 come in?
It is available in a SOT-23-5 package.
8. Is this regulator suitable for noise-sensitive applications?
Yes, it has low noise output, making it ideal for audio and RF circuits.
9. What is the operating temperature range?
It operates within a temperature range of -40°C to +125°C.
10. Can it be used in automotive applications?
Yes, it is suitable for low-power automotive modules and infotainment systems.
