Overview
The LP2985-10DBVR, produced by Texas Instruments, is a fixed-output, wide-input, low-noise, low-dropout voltage regulator. This device supports an input voltage range from 2.5 V to 16 V and can deliver up to 150 mA of load current. It is designed to provide high accuracy and stability, making it suitable for a variety of applications, including low-voltage microcontrollers (MCUs) and processors. The regulator features low output noise, high power supply rejection ratio (PSRR), and internal protection mechanisms such as overcurrent and overtemperature protection.
Key Specifications
| Parameter | Min | Typ | Max | Unit |
|---|---|---|---|---|
| Input Voltage Range | -0.3 | - | 16 | V |
| Output Voltage Range | -0.3 | - | VIN + 0.3 or 9 (whichever is smaller) | V |
| Output Current | - | - | 150 | mA |
| Output Voltage Accuracy | - | - | ±0.5% (new chip) | % |
| Quiescent Current (ILOAD = 0 mA) | - | 71 | - | μA |
| Quiescent Current (ILOAD = 150 mA) | - | 750 | - | μA |
| Shutdown Current | - | 1.12 | - | μA |
| Output Noise Voltage | - | 30 | - | μVRMS |
| PSRR at 1 kHz | - | 70 | - | dB |
| Operating Junction Temperature | -40 | - | 125 | °C |
| Package | - | - | 5-pin SOT-23 (DBV) | - |
Key Features
- Wide input voltage range from 2.5 V to 16 V
- Fixed output voltage range from 1.2 V to 5.0 V in 100-mV steps
- High output voltage accuracy: ±0.5% for the new chip
- Low quiescent current: 71 μA at ILOAD = 0 mA and 750 μA at ILOAD = 150 mA
- Low shutdown current: 1.12 μA (typical)
- Low output noise: 30 μVRMS with a 10-nF bypass capacitor
- High PSRR: 70 dB at 1 kHz and 40 dB at 1 MHz
- Internal protection features including overcurrent and overtemperature protection
- Stable operation with 2.2-μF ceramic capacitors
- Enable pin for shutdown control
Applications
- Washer and dryer systems
- Land mobile radio systems
- Active antenna systems and mMIMO applications
- Cordless power tools
- Motor drives and control boards
Q & A
- What is the input voltage range of the LP2985?
The input voltage range of the LP2985 is from 2.5 V to 16 V.
- What is the maximum output current of the LP2985?
The LP2985 can deliver up to 150 mA of load current.
- What is the output voltage accuracy of the new LP2985 chip?
The output voltage accuracy of the new LP2985 chip is ±0.5%.
- How much quiescent current does the LP2985 consume at no load?
The LP2985 consumes 71 μA of quiescent current at no load.
- What is the typical shutdown current of the LP2985?
The typical shutdown current of the LP2985 is 1.12 μA.
- What is the output noise voltage of the LP2985 with a 10-nF bypass capacitor?
The output noise voltage of the LP2985 with a 10-nF bypass capacitor is 30 μVRMS.
- What is the PSRR of the LP2985 at 1 kHz?
The PSRR of the LP2985 at 1 kHz is 70 dB.
- What are the internal protection features of the LP2985?
The LP2985 includes internal protection features such as overcurrent and overtemperature protection.
- What type of package is the LP2985 available in?
The LP2985 is available in a 5-pin SOT-23 (DBV) package.
- What are some common applications of the LP2985?
The LP2985 is commonly used in washer and dryer systems, land mobile radio systems, active antenna systems, cordless power tools, and motor drives and control boards.
