Overview
The LP2985IM5-3.8, manufactured by Texas Instruments, is a micropower, low-noise, ultra-low dropout (LDO) voltage regulator designed for applications requiring a stable and efficient power supply. This component is part of the LP2985-N series and is housed in a compact SOT-23-5 package, making it suitable for space-constrained designs. It is engineered to deliver a fixed output voltage of 3.8V with a maximum output current of 150mA, catering to low-power electronic devices. Its ultra-low dropout voltage and low-noise characteristics make it an ideal choice for battery-powered and noise-sensitive applications.
Key Specifications
| Parameter | Value | Unit | Notes |
|---|---|---|---|
| Maximum Input Voltage | 16 | V | |
| Output Voltage | 3.8 | V | Fixed |
| Dropout Voltage (Max) | 575 | mV | |
| Output Current | 150 | mA | |
| Number of Outputs | 1 | ||
| Output Type | Fixed | ||
| Operating Temperature Range | -40 to +125 | °C | |
| Package | SOT-23-5 | ||
| Minimum Input Voltage | 2.5 | V | |
| Line Regulation | 0.007 | % | |
| PSRR (Typical) | 45 | dB | |
| Factory Pack Quantity | 1000 | Reel |
Key Features
- Ultra-low dropout voltage for efficient power conversion.
- Low-noise output, ideal for sensitive analog and RF applications.
- Compact SOT-23-5 package for space-constrained designs.
- Wide input voltage range (2.5V to 16V) for versatile applications.
- Fixed 3.8V output voltage with high accuracy (±4%).
Applications
The LP2985IM5-3.8 is widely used in applications requiring stable and low-noise power supplies. It is particularly suitable for battery-powered devices, portable electronics, and noise-sensitive systems such as audio amplifiers, RF modules, and medical devices. Its compact size and efficient performance also make it a preferred choice for IoT devices, wearables, and other space-constrained applications.
Q & A
1. What is the maximum output current of the LP2985IM5-3.8?
The maximum output current is 150mA.
2. What is the dropout voltage of this regulator?
The maximum dropout voltage is 575mV.
3. What is the operating temperature range?
The operating temperature range is -40°C to +125°C.
4. Is the output voltage fixed or adjustable?
The output voltage is fixed at 3.8V.
5. What is the typical PSRR of this regulator?
The typical PSRR is 45dB.
6. What package does the LP2985IM5-3.8 come in?
It is available in a SOT-23-5 package.
7. What is the minimum input voltage required?
The minimum input voltage is 2.5V.
8. Is this regulator suitable for battery-powered devices?
Yes, its ultra-low dropout voltage makes it ideal for battery-powered applications.
9. Can it be used in noise-sensitive applications?
Yes, its low-noise characteristics make it suitable for noise-sensitive systems.
10. What is the factory pack quantity?
The factory pack quantity is 1000 units per reel.
