Overview
The LP2985IM5-3.3/NOPB is a low-dropout (LDO) voltage regulator produced by Texas Instruments. This component is designed to provide a stable and regulated output voltage of 3.3V from an input voltage range of 2.5V to 16V. It is particularly suited for applications requiring low noise and high accuracy, making it ideal for powering low-voltage microcontrollers (MCUs) and processors.
Key Specifications
| Parameter | Value |
|---|---|
| Manufacturer | Texas Instruments |
| Part Number | LP2985IM5-3.3/NOPB |
| Package Type | SOT-23-5 |
| Input Voltage Range | 2.5V to 16V |
| Output Voltage | 3.3V (fixed) |
| Output Current | Up to 150 mA |
| Operating Temperature Range | -40°C to +125°C |
| Output Accuracy | ±1% (new chip), ±1.5% (standard-grade legacy chip) |
| 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 |
Key Features
- Low dropout voltage regulator with an input voltage range of 2.5V to 16V and a fixed output voltage of 3.3V.
- High output accuracy: ±1% for new chip and ±1.5% for standard-grade legacy chip.
- Low quiescent current: 71 µA at no load and 750 µA at full load.
- 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 2.2-µF ceramic capacitors.
Applications
The LP2985IM5-3.3/NOPB is suitable for a variety of applications, including:
- Powering low-voltage microcontrollers (MCUs) and processors.
- Portable electronics and battery-powered devices.
- Industrial control systems and automation.
- Medical devices requiring low noise and high accuracy.
- Communication equipment and networking devices.
Q & A
- What is the input voltage range of the LP2985IM5-3.3/NOPB?
The input voltage range is from 2.5V to 16V. - What is the output voltage of the LP2985IM5-3.3/NOPB?
The output voltage is fixed at 3.3V. - What is the maximum output current of the LP2985IM5-3.3/NOPB?
The maximum output current is up to 150 mA. - What is the operating temperature range of the LP2985IM5-3.3/NOPB?
The operating temperature range is -40°C to +125°C. - What is the quiescent current (IQ) of the LP2985IM5-3.3/NOPB?
The quiescent current is 71 µA at no load and 750 µA at full load. - Does the LP2985IM5-3.3/NOPB have overcurrent and overtemperature protection?
Yes, it includes internal overcurrent and overtemperature protection. - What is the noise level of the LP2985IM5-3.3/NOPB?
The noise level is 30 µV RMS with a 10-nF bypass capacitor. - What is the PSRR of the LP2985IM5-3.3/NOPB?
The PSRR is 70 dB at 1 kHz and 40 dB at 1 MHz. - Is the LP2985IM5-3.3/NOPB stable with ceramic capacitors?
Yes, it is stable with 2.2-µF ceramic capacitors. - What package type does the LP2985IM5-3.3/NOPB come in?
The LP2985IM5-3.3/NOPB comes in a 5-pin SOT-23 (DBV) package.
