Overview
The LP2985A-18DBVR is a low-dropout (LDO) voltage regulator manufactured by Texas Instruments. Designed for applications requiring a stable and low-noise power supply, this component is part of the LP2985 series, known for its precision and reliability. The LP2985A-18DBVR is particularly suitable for portable and non-portable devices, offering a fixed output voltage of 1.8V with a tolerance of 1%. Its compact SOT-23-5 package and low dropout voltage make it an ideal choice for space-constrained designs. Target users include engineers and designers in the consumer electronics, industrial automation, and automotive sectors.
Key Specifications
| Parameter | Value | Unit | Notes |
|---|---|---|---|
| Manufacturer | Texas Instruments | - | - |
| Output Voltage | 1.8 | V | Fixed |
| Input Voltage Range | 2.2 to 16 | V | - |
| Output Current | 150 | mA | Maximum |
| Dropout Voltage | 0.28 | V | @ 150mA |
| Load Regulation | 0.3 | % | - |
| Operating Temperature | -40 to +125 | °C | - |
| Package | SOT-23-5 | - | - |
| PSRR | 45 | dB | @ 1kHz |
| Quiescent Current | 95 | µA | - |
Key Features
- Fixed 1.8V output with 1% tolerance for precise voltage regulation.
- Low dropout voltage of 0.28V at 150mA, ensuring efficient operation even with low input voltages.
- Low noise output, making it suitable for noise-sensitive applications.
- Built-in protection features including overcurrent, thermal shutdown, and short-circuit protection.
- Compact SOT-23-5 package for space-constrained designs.
Applications
The LP2985A-18DBVR is widely used in various industries due to its reliability and efficiency. In consumer electronics, it powers portable devices such as smartphones, tablets, and wearables. In industrial automation, it ensures stable voltage supply for sensors and control systems. Automotive applications include infotainment systems and advanced driver-assistance systems (ADAS), where its low noise and high precision are critical. Additionally, it is suitable for medical devices and IoT applications, where power efficiency and reliability are paramount.
Q & A
1. What is the output voltage of the LP2985A-18DBVR?
The output voltage is fixed at 1.8V.
2. What is the maximum input voltage for this LDO?
The maximum input voltage is 16V.
3. What is the dropout voltage at 150mA?
The dropout voltage is 0.28V at 150mA.
4. What is the operating temperature range?
The operating temperature range is -40°C to +125°C.
5. What package does the LP2985A-18DBVR use?
It uses the SOT-23-5 package.
6. Does it include protection features?
Yes, it includes overcurrent, thermal shutdown, and short-circuit protection.
7. What is the quiescent current?
The quiescent current is 95 µA.
8. Is this LDO suitable for portable devices?
Yes, its low dropout voltage and compact size make it ideal for portable devices.
9. What is the PSRR of this LDO?
The PSRR is 45dB at 1kHz.
10. Can it be used in automotive applications?
Yes, it is suitable for automotive applications such as infotainment and ADAS systems.
