Overview
The LP2985AIM5-3.0/NOPB is a micropower, low-noise, ultra-low-dropout voltage regulator produced by Texas Instruments. This device is part of the LP2985-N series and is designed to provide a fixed output voltage of 3.0 V. It supports an input voltage range from 2.5 V to 16 V and can deliver up to 150 mA of continuous load current. The regulator is known for its high power supply rejection ratio (PSRR), low output noise, and integrated protection features such as overcurrent and thermal shutdown. The LP2985AIM5-3.0/NOPB is packaged in a 5-pin SOT-23 (DBV) package, making it suitable for a variety of applications requiring compact and efficient voltage regulation.
Key Specifications
| Parameter | Value | Unit |
|---|---|---|
| Input Voltage Range | 2.5 V to 16 V | V |
| Output Voltage | 3.0 V (fixed) | V |
| Output Current (Max) | 150 mA | A |
| Output Voltage Accuracy | ±0.5% (new chip) | % |
| Dropout Voltage (Typ) | 1 to 2.75 mV | mV |
| Quiescent Current (Typ) | 71 μA at ILOAD = 0 mA, 750 μA at ILOAD = 150 mA | μA |
| Shutdown Current (Typ) | 1.12 μA | μA |
| Output Noise (Typ) | 30 μVRMS with 10-nF bypass capacitor | μVRMS |
| Operating Temperature Range | -40°C to +125°C | °C |
| Package Type | 5-pin SOT-23 (DBV) | |
| Package Size | 2.9 mm x 1.6 mm | mm |
Key Features
- Low-noise operation with 30 μVRMS output noise using a 10-nF bypass capacitor.
- High power supply rejection ratio (PSRR) of 70 dB at 1 kHz and 40 dB at 1 MHz.
- Integrated overcurrent protection and thermal shutdown.
- Output enable feature with internal output pulldown.
- Soft-start mechanism to control inrush current.
- Stable operation with low-ESR ceramic output capacitors (minimum 2.2 μF).
- Low quiescent current (IQ) of 71 μA at no load and 750 μA at full load.
- Ultra-low dropout voltage, ensuring efficient voltage regulation.
Applications
- Portable and non-portable electronic devices.
- Washers and dryers.
- Land mobile radios.
- 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 LP2985AIM5-3.0/NOPB?
The input voltage range is from 2.5 V to 16 V.
- What is the fixed output voltage of the LP2985AIM5-3.0/NOPB?
The fixed output voltage is 3.0 V.
- What is the maximum output current of the LP2985AIM5-3.0/NOPB?
The maximum output current is 150 mA.
- What is the typical quiescent current of the LP2985AIM5-3.0/NOPB at no load?
The typical quiescent current at no load is 71 μA.
- What is the typical output noise of the LP2985AIM5-3.0/NOPB?
The typical output noise is 30 μVRMS with a 10-nF bypass capacitor.
- What is the operating temperature range of the LP2985AIM5-3.0/NOPB?
The operating temperature range is -40°C to +125°C.
- What type of package does the LP2985AIM5-3.0/NOPB come in?
The device is packaged in a 5-pin SOT-23 (DBV) package.
- Does the LP2985AIM5-3.0/NOPB have built-in protection features?
Yes, it includes overcurrent protection, thermal shutdown, and output enable with internal output pulldown.
- What is the typical dropout voltage of the LP2985AIM5-3.0/NOPB?
The typical dropout voltage is between 1 to 2.75 mV.
- Is the LP2985AIM5-3.0/NOPB stable with low-ESR ceramic output capacitors?
Yes, it is stable with low-ESR ceramic output capacitors, with a minimum recommended capacitance of 2.2 μF.
