Overview
The LP2985A-25DBVR is a low-noise, low-dropout voltage regulator produced by Texas Instruments. This component is part of the LP2985 series, known for its wide input voltage range and high accuracy output. The LP2985A-25DBVR is specifically designed to provide a fixed output voltage of 2.5V, making it suitable for various applications requiring stable and low-noise power supply.
This regulator supports an input voltage range from 2.5 V to 16 V and can deliver up to 150 mA of load current. It features high output voltage accuracy, low quiescent current, and robust protection mechanisms such as overcurrent and thermal protection. The device is available in a compact 5-pin SOT-23 (DBV) package, making it ideal for space-constrained designs.
Key Specifications
| Parameter | Value | Unit |
|---|---|---|
| Input Voltage Range | 2.5 V to 16 V | V |
| Output Voltage | 2.5 V (fixed) | V |
| Output Current | Up to 150 mA | mA |
| Output Voltage Accuracy | ±0.5% (new chip) | % |
| Quiescent Current (ILOAD = 0 mA) | 71 μA | μA |
| Quiescent Current (ILOAD = 150 mA) | 750 μA | μA |
| Shutdown Current | 1.12 μA (typ) | μA |
| Output Noise Voltage | 30 μVRMS (with 10-nF bypass capacitor) | μVRMS |
| PSRR at 1 kHz | 70 dB | dB |
| Operating Junction Temperature | -40°C to +125°C | °C |
| Package | 5-pin SOT-23 (DBV) |
Key Features
- Wide input voltage range from 2.5 V to 16 V
- Fixed output voltage of 2.5 V with high accuracy (±0.5% for new chip)
- Low quiescent current: 71 μA at ILOAD = 0 mA and 750 μA at ILOAD = 150 mA
- Low noise output: 30 μVRMS with a 10-nF bypass capacitor
- High PSRR: 70 dB at 1 kHz and 40 dB at 1 MHz
- Internal soft-start and current limit protection
- Overcurrent and thermal protection
- Stable with 2.2-µF ceramic capacitors
- Compact 5-pin SOT-23 (DBV) package
Applications
- Washer and dryer systems
- Land mobile radio systems
- Active antenna systems and mMIMO
- Cordless power tools
- Motor drives and control boards
- Low-voltage microcontrollers (MCUs) and processors
Q & A
- What is the input voltage range of the LP2985A-25DBVR?
The input voltage range is from 2.5 V to 16 V.
- What is the fixed output voltage of the LP2985A-25DBVR?
The fixed output voltage is 2.5 V.
- What is the maximum output current of the LP2985A-25DBVR?
The maximum output current is up to 150 mA.
- What is the output voltage accuracy of the LP2985A-25DBVR?
The output voltage accuracy is ±0.5% for the new chip.
- How does the quiescent current vary with load current?
The quiescent current is 71 μA at ILOAD = 0 mA and 750 μA at ILOAD = 150 mA.
- What is the typical shutdown current of the LP2985A-25DBVR?
The typical shutdown current is 1.12 μA.
- What is the output noise voltage with a 10-nF bypass capacitor?
The output noise voltage is 30 μVRMS with a 10-nF bypass capacitor.
- What is the PSRR at 1 kHz?
The PSRR at 1 kHz is 70 dB.
- What is the operating junction temperature range of the LP2985A-25DBVR?
The operating junction temperature range is -40°C to +125°C.
- In what package is the LP2985A-25DBVR available?
The LP2985A-25DBVR is available in a 5-pin SOT-23 (DBV) package.
