Overview
The LP2985IM5X-3.3/NOPB is a low-dropout voltage regulator produced by Texas Instruments. This component is designed to provide a stable 3.3V output voltage from an input voltage range of 2.5V to 16V, making it suitable for a variety of applications requiring low noise and high accuracy voltage regulation. The regulator is packaged in a 5-pin SOT-23 (DBV) package, which is compact and ideal for space-constrained designs. It features an enable function, low output noise, and high power supply rejection ratio (PSRR), making it a reliable choice for powering low-voltage microcontrollers, processors, and other sensitive electronic components.
Key Specifications
| Parameter | Description |
|---|---|
| Manufacturer | Texas Instruments |
| Part Number | LP2985IM5X-3.3/NOPB |
| Package | SOT-23 (DBV), 5-pin |
| Input Voltage Range | 2.5V to 16V |
| Output Voltage | Fixed 3.3V |
| Output Current | Up to 150 mA |
| Output Accuracy | ±1% across load and temperature |
| Quiescent Current (IQ) | 71 µA at ILOAD = 0 mA, 750 µA at ILOAD = 150 mA |
| Shutdown Current | 0.05 µA (typ) for legacy chip, 1.12 µA (typ) for new chip |
| Noise | 30 µV RMS with 10-nF bypass capacitor |
| PSRR | 70 dB at 1 kHz, 40 dB at 1 MHz |
| Operating Temperature Range | -40°C to +125°C |
Key Features
- Low-dropout voltage regulator with an input voltage range of 2.5V to 16V and a fixed 3.3V output voltage.
- High accuracy output voltage with ±1% accuracy across load and temperature.
- Low quiescent current (IQ) of 71 µA at no load and 750 µA at full load.
- Low noise of 30 µV RMS with a 10-nF bypass capacitor.
- High power supply rejection ratio (PSRR) of 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 for enhanced reliability.
- Compact 5-pin SOT-23 (DBV) package suitable for space-constrained designs.
Applications
The LP2985IM5X-3.3/NOPB is suitable for various applications requiring stable and low-noise voltage regulation, including:
- Powering low-voltage microcontrollers (MCUs) and processors.
- Supplying voltage to sensitive electronic components in industrial, automotive, and consumer electronics.
- Use in battery-powered devices where low quiescent current is crucial.
- Implementation in noise-sensitive circuits such as audio and medical devices.
Q & A
- What is the input voltage range of the LP2985IM5X-3.3/NOPB?
The input voltage range is from 2.5V to 16V.
- What is the output voltage of the LP2985IM5X-3.3/NOPB?
The output voltage is fixed at 3.3V.
- What is the maximum output current of the LP2985IM5X-3.3/NOPB?
The maximum output current is up to 150 mA.
- What is the quiescent current (IQ) of the LP2985IM5X-3.3/NOPB?
The quiescent current is 71 µA at no load and 750 µA at full load.
- What is the noise level of the LP2985IM5X-3.3/NOPB?
The noise level is 30 µV RMS with a 10-nF bypass capacitor.
- What is the PSRR of the LP2985IM5X-3.3/NOPB?
The PSRR is 70 dB at 1 kHz and 40 dB at 1 MHz.
- What protection features does the LP2985IM5X-3.3/NOPB have?
The regulator includes overcurrent and overtemperature protection, as well as internal soft-start and current-limit protection.
- What is the operating temperature range of the LP2985IM5X-3.3/NOPB?
The operating temperature range is -40°C to +125°C.
- In what package is the LP2985IM5X-3.3/NOPB available?
The regulator is available in a 5-pin SOT-23 (DBV) package.
- Is the LP2985IM5X-3.3/NOPB RoHS compliant?
Yes, the LP2985IM5X-3.3/NOPB is RoHS compliant.
