Overview
The LP2985IM5X-5.0/NOPB is a fixed-output, low-noise, low-dropout voltage regulator produced by Texas Instruments. This device is part of the LP2985-N series and is designed to offer high performance and cost-effectiveness for both portable and non-portable applications. 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 LP2985IM5X-5.0/NOPB features high accuracy, low noise, and integrated protection mechanisms, making it suitable for a variety of applications including low-voltage microcontrollers (MCUs) and processors.
Key Specifications
| Parameter | Value | Unit |
|---|---|---|
| Input Voltage Range | 2.5 V to 16 V | V |
| Output Voltage Range | 1.2 V to 5.0 V (new chip), 2.5 V to 6.1 V (legacy chip) | V |
| Output Current | Up to 150 mA | mA |
| Output Voltage Accuracy | ±0.5% (new chip), ±1% (A-grade legacy chip), ±1.5% (standard-grade legacy chip) | % |
| Dropout Voltage | 1 to 2.75 mV (new chip at IOUT = 0 mA) | mV |
| Quiescent Current (IQ) | 71 μA at ILOAD = 0 mA, 750 μA at ILOAD = 150 mA (new chip) | μA |
| Shutdown Current | 0.05 μA (typ) for legacy chip, 1.12 μA (typ) for new chip | μA |
| Noise | 30 μVRMS with 10-nF bypass capacitor | μVRMS |
| 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
- High accuracy output voltage: ±0.5% for the new chip across load and temperature variations.
- Low noise: 30 μVRMS with a 10-nF bypass capacitor.
- High PSRR: 70 dB at 1 kHz and 40 dB at 1 MHz.
- Low dropout voltage: As low as 1 to 2.75 mV at IOUT = 0 mA for the new chip.
- Integrated protection mechanisms: Overcurrent protection, thermal shutdown, and output enable.
- Internal soft-start mechanism: Reduces inrush current during startup.
- Stable with ceramic capacitors: Requires a minimum of 2.2-µF ceramic capacitors for stability.
Applications
- Washers and dryers
- Land mobile radios
- Active antenna systems and mMIMO
- Cordless power tools
- Motor drives and control boards
Q & A
- What is the input voltage range of the LP2985IM5X-5.0/NOPB?
The input voltage range is from 2.5 V to 16 V.
- What is the maximum output current of the LP2985IM5X-5.0/NOPB?
The maximum output current is up to 150 mA.
- What is the output voltage accuracy of the new chip?
The output voltage accuracy is ±0.5% for the new chip.
- What is the typical dropout voltage at zero load current for the new chip?
The typical dropout voltage at zero load current is 1 to 2.75 mV for the new chip.
- What is the quiescent current at zero load current for the new chip?
The quiescent current at zero load current is 71 μA for the new chip.
- What is the shutdown current for the new chip?
The shutdown current is typically 1.12 μA for the new chip.
- What is the noise level with a 10-nF bypass capacitor?
The noise level is 30 μVRMS with a 10-nF bypass capacitor.
- What is the PSRR at 1 kHz and 1 MHz?
The PSRR is 70 dB at 1 kHz and 40 dB at 1 MHz.
- What is the operating junction temperature range?
The operating junction temperature range is from –40°C to +125°C.
- What type of package is the LP2985IM5X-5.0/NOPB available in?
The LP2985IM5X-5.0/NOPB is available in a 5-pin SOT-23 (DBV) package.
