Overview
The LP2985AIM5X-4.0/NOPB is a fixed-output, wide-input, low-noise, low-dropout voltage regulator produced by Texas Instruments. This component 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 meet the needs of low-voltage microcontrollers (MCUs) and processors with its high output accuracy and low noise characteristics.
Key Specifications
| Parameter | Value | Unit |
|---|---|---|
| Input Voltage Range | 2.5 V to 16 V | V |
| Output Voltage Range (New Chip) | 1.2 V to 5.0 V (fixed, 100-mV steps) | V |
| Output Voltage Range (Legacy Chip) | 2.5 V to 6.1 V | V |
| Output Current | Up to 150 mA | mA |
| Output Voltage Accuracy (New Chip) | ±0.5% | % |
| Output Voltage Accuracy (Legacy Chip) | ±1% (A-grade), ±1.5% (standard-grade) | % |
| Quiescent Current (New Chip) | 71 µA at I_LOAD = 0 mA, 750 µA at I_LOAD = 150 mA | µA |
| Shutdown Current | 0.05 µA (typ) for legacy chip, 1.12 µA (typ) for new chip | µA |
| Output Noise Voltage | 30 µV RMS with 10-nF bypass capacitor | µV |
| PSRR | 70 dB at 1 kHz, 40 dB at 1 MHz | 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.
- High output accuracy: ±0.5% for new chip, ±1% for A-grade legacy chip, and ±1.5% for standard-grade legacy chip.
- Low quiescent current: 71 µA at no load and 750 µA at full load for the new chip.
- Low noise: 30 µV RMS with a 10-nF bypass capacitor.
- High power supply rejection ratio (PSRR): 70 dB at 1 kHz and 40 dB at 1 MHz.
- Internal soft-start and current-limit protection to reduce inrush current during startup.
- Overcurrent and overtemperature protection.
- Stable operation with low-ESR output capacitors.
Applications
- Low-voltage microcontrollers (MCUs) and processors.
- Washers and dryers.
- Land mobile radios.
- Active antenna systems (mMIMO).
- Cordless power tools.
- Motor drives and control boards.
Q & A
- What is the input voltage range of the LP2985AIM5X-4.0/NOPB? The input voltage range is from 2.5 V to 16 V.
- What is the maximum output current of the LP2985AIM5X-4.0/NOPB? The maximum output current is up to 150 mA.
- What are the output voltage ranges for the new and legacy chips? The new chip supports an output range of 1.2 V to 5.0 V, while the legacy chip supports an output range of 2.5 V to 6.1 V.
- What is the quiescent current of the new chip at no load and full load? The quiescent current is 71 µA at no load and 750 µA at full load.
- What is the output noise voltage of the LP2985AIM5X-4.0/NOPB? The output noise voltage is 30 µV RMS with a 10-nF bypass capacitor.
- What is the PSRR of the LP2985AIM5X-4.0/NOPB? The PSRR is 70 dB at 1 kHz and 40 dB at 1 MHz.
- What are the protection features of the LP2985AIM5X-4.0/NOPB? It includes overcurrent, overtemperature, and internal soft-start and current-limit protection.
- What is the operating junction temperature range of the LP2985AIM5X-4.0/NOPB? The operating junction temperature range is –40°C to +125°C.
- In what package is the LP2985AIM5X-4.0/NOPB available? It is available in a 5-pin SOT-23 (DBV) package.
- What are some common applications of the LP2985AIM5X-4.0/NOPB? Common applications include low-voltage microcontrollers, washers and dryers, land mobile radios, active antenna systems, cordless power tools, and motor drives and control boards.
