Overview
The LP2980IM5-3.3, produced by Texas Instruments, is a fixed-output, ultra-low-dropout (LDO) voltage regulator. This device is part of the LP2980-N series and is specifically configured to provide a fixed output voltage of 3.3 V. It supports an input voltage range from 2.5 V to 16 V and can deliver up to 50 mA of continuous load current. The LP2980IM5-3.3 is designed for applications requiring low noise, high power supply rejection ratio (PSRR), and robust protection features such as overcurrent and thermal shutdown.
Key Specifications
| Parameter | Value | Unit |
|---|---|---|
| Input Voltage Range | 2.5 V to 16 V | V |
| Output Voltage | 3.3 V (fixed) | V |
| Output Current | Up to 50 mA | mA |
| Output Voltage Accuracy | ±0.5% (A grade), ±1% (standard grade) | % |
| Quiescent Current (ILOAD = 0 mA) | 69 μA | μA |
| Quiescent Current (ILOAD = 50 mA) | 380 μA | μA |
| Shutdown Current | 1.12 μA (typ) | μA |
| PSRR at 1 kHz | 75 dB | dB |
| PSRR at 1 MHz | 45 dB | dB |
| Operating Junction Temperature | –40°C to +125°C | °C |
| Package | 5-pin SOT-23 (DBV) |
Key Features
- Ultra-low-dropout voltage regulator with high PSRR performance.
- Output voltage accuracy of ±0.5% (A grade) and ±1% (standard grade) across load and temperature.
- Internal soft-start mechanism to reduce inrush current during startup.
- Integrated overcurrent protection and thermal shutdown.
- Output enable pin for controlling the output voltage.
- Low quiescent current: 69 μA at ILOAD = 0 mA and 380 μA at ILOAD = 50 mA.
- Stable operation with 2.2-µF ceramic capacitors.
- Undervoltage lockout (UVLO) with hysteresis for controlled turn-on and turn-off.
Applications
- Residential breakers
- Solid state drives (SSD)
- Electricity meters
- Appliances
- Building automation
- Low-voltage microcontrollers (MCUs) and processors
Q & A
- What is the input voltage range of the LP2980IM5-3.3?
The input voltage range is from 2.5 V to 16 V.
- What is the fixed output voltage of the LP2980IM5-3.3?
The fixed output voltage is 3.3 V.
- What is the maximum output current of the LP2980IM5-3.3?
The maximum output current is up to 50 mA.
- What is the output voltage accuracy of the LP2980IM5-3.3?
The output voltage accuracy is ±0.5% (A grade) and ±1% (standard grade) across load and temperature.
- What is the quiescent current of the LP2980IM5-3.3 at no load and full load?
The quiescent current is 69 μA at ILOAD = 0 mA and 380 μA at ILOAD = 50 mA.
- What is the PSRR performance of the LP2980IM5-3.3 at 1 kHz and 1 MHz?
The PSRR is 75 dB at 1 kHz and 45 dB at 1 MHz.
- What are the key protection features of the LP2980IM5-3.3?
The key protection features include overcurrent protection, thermal shutdown, and undervoltage lockout (UVLO).
- What is the operating junction temperature range of the LP2980IM5-3.3?
The operating junction temperature range is –40°C to +125°C.
- In what package is the LP2980IM5-3.3 available?
The LP2980IM5-3.3 is available in a 5-pin SOT-23 (DBV) package.
- What type of capacitors are recommended for stable operation of the LP2980IM5-3.3?
The device is stable with 2.2-µF ceramic capacitors.
