Overview
The LP2985-18DBVR is a low-dropout (LDO) linear voltage regulator manufactured by Texas Instruments. Designed for both portable and non-portable applications, this regulator provides exceptional performance with a fixed output voltage of 1.8V. It is part of the LP2985 series, which offers a range of output voltages with a tight tolerance of 1%. The LP2985-18DBVR is ideal for applications requiring low noise, high efficiency, and reliable power regulation. Its compact SOT-23-5 package makes it suitable for space-constrained designs.
Key Specifications
| Parameter | Value | Unit | Notes |
|---|---|---|---|
| Manufacturer | Texas Instruments | - | - |
| Model | LP2985-18DBVR | - | - |
| Output Configuration | Positive | - | - |
| Output Type | Fixed | - | - |
| Output Voltage | 1.8 | V | - |
| Input Voltage (Max) | 16 | V | - |
| Voltage Drop (Max) | 0.58 | V | @ 150mA |
| Output Current | 150 | mA | - |
| Quiescent Current (Iq) | 95 | µA | - |
| Supply Current (Max) | 2.5 | mA | - |
| PSRR | 45 | dB | @ 1kHz |
| Control Features | Enable | - | - |
| Protection Features | Overcurrent, Overtemperature, Short Circuit | - | - |
| Operating Temperature | -40 to 125 | °C | - |
| Mounting Type | Surface Mount | - | - |
| Package/Case | SC-74A, SOT-753 | - | - |
Key Features
- Fixed output voltage of 1.8V with 1% tolerance.
- Low dropout voltage of 0.58V at 150mA.
- Low quiescent current of 95 µA for improved efficiency.
- High power supply rejection ratio (PSRR) of 45dB at 1kHz.
- Integrated protection features including overcurrent, overtemperature, and short circuit protection.
- Compact SOT-23-5 package for space-constrained applications.
Applications
The LP2985-18DBVR is widely used in various applications, including portable electronics, IoT devices, and industrial control systems. Its low noise and high efficiency make it suitable for powering sensitive analog and digital circuits. Additionally, its robust protection features ensure reliable operation in harsh environments. Common applications include battery-powered devices, sensors, and embedded systems where stable and efficient power regulation is critical.
Q & A
1. What is the output voltage of the LP2985-18DBVR?
The output voltage is fixed at 1.8V.
2. What is the maximum input voltage supported?
The maximum input voltage is 16V.
3. What is the dropout voltage at 150mA?
The dropout voltage is 0.58V at 150mA.
4. Does the LP2985-18DBVR have overcurrent protection?
Yes, it includes overcurrent protection.
5. What is the operating temperature range?
The operating temperature range is -40°C to 125°C.
6. What is the package type of the LP2985-18DBVR?
It comes in a SOT-23-5 package.
7. What is the quiescent current of the regulator?
The quiescent current is 95 µA.
8. Is the LP2985-18DBVR suitable for battery-powered devices?
Yes, its low quiescent current and dropout voltage make it ideal for battery-powered applications.
9. What is the PSRR of the LP2985-18DBVR?
The PSRR is 45dB at 1kHz.
10. Does the LP2985-18DBVR support an enable function?
Yes, it includes an enable pin for control.
