Overview
The LP2980AIM5-3.3 is a fixed-output, wide-input, low-dropout (LDO) voltage regulator produced by Texas Instruments. This regulator supports an input voltage range from 2.5V to 16V and can supply up to 50mA of load current. It is designed to provide a stable output voltage of 3.3V, making it suitable for low-voltage microcontrollers (MCUs) and processors. The LP2980AIM5-3.3 is available in a compact 5-pin SOT-23 (DBV) package, measuring 2.9mm × 1.6mm, and operates over a temperature range of –40°C to +125°C.
Key Specifications
| Parameter | Value |
|---|---|
| Input Voltage Range | 2.5V to 16V |
| Output Voltage | 3.3V (fixed) |
| Output Current | Up to 50mA |
| Output Accuracy | ±0.5% (A-grade), ±1% (standard-grade), ±1% over load and temperature (new chip) |
| Quiescent Current (IQ) | 69µA at ILOAD = 0mA, 380µA at ILOAD = 50mA |
| Shutdown Current | 0.01µA (typ) for legacy chip, 1.12µA (typ) for new chip |
| Power Supply Rejection Ratio (PSRR) | 75dB at 1kHz, 45dB at 1MHz |
| Operating Junction Temperature | –40°C to +125°C |
| Package | 5-pin SOT-23 (DBV) |
Key Features
- Wide input voltage range: 2.5V to 16V
- Fixed output voltage: 3.3V with high accuracy (±0.5% for A-grade, ±1% for standard-grade)
- Low dropout voltage
- Low quiescent current: 69µA at no load, 380µA at full load
- High PSRR: 75dB at 1kHz, 45dB at 1MHz
- Internal soft-start and current-limit protection
- Overcurrent and overtemperature protection
- Stable operation with 2.2µF ceramic capacitors
- Compact 5-pin SOT-23 (DBV) package
Applications
The LP2980AIM5-3.3 is suitable for a variety of applications requiring a stable and low-noise voltage supply, including:
- Low-voltage microcontrollers (MCUs) and processors
- Portable electronics and battery-powered devices
- Wireless communication devices
- Medical devices and diagnostic equipment
- Industrial control systems and automation
Q & A
- What is the input voltage range of the LP2980AIM5-3.3?
The input voltage range is from 2.5V to 16V.
- What is the output voltage of the LP2980AIM5-3.3?
The output voltage is fixed at 3.3V.
- What is the maximum output current of the LP2980AIM5-3.3?
The maximum output current is up to 50mA.
- What is the quiescent current (IQ) of the LP2980AIM5-3.3?
The quiescent current is 69µA at no load and 380µA at full load.
- Does the LP2980AIM5-3.3 have overcurrent and overtemperature protection?
- What is the operating junction temperature range of the LP2980AIM5-3.3?
The operating junction temperature range is –40°C to +125°C.
- What package type is the LP2980AIM5-3.3 available in?
- What is the PSRR of the LP2980AIM5-3.3?
The PSRR is 75dB at 1kHz and 45dB at 1MHz.
- Is the LP2980AIM5-3.3 stable with ceramic capacitors?
- What are some common applications for the LP2980AIM5-3.3?
