Manufacturer Part Number
LP2981A-33DBVR
Manufacturer
Texas Instruments
Introduction
The LP2981A-33DBVR is a low-dropout (LDO) voltage regulator designed for power-sensitive applications, offering a fixed output voltage of 3.3V.
Product Features and Performance
Fixed 3.3V output voltage
Supports input voltage up to 16V
Maximum dropout voltage of 0.37V @ 100mA load
Output current capacity of 100mA
Low quiescent current of 95 µA
High PSRR of 63dB at 1kHz
Enable control feature for power conservation
Short circuit and over-temperature protection
Operates within -40°C to 125°C temperature range
Surface mount packaging for space-saving installation
Product Advantages
High efficiency at low dropout voltages
Minimal power consumption in idle mode
Robust protection features ensure long-term reliability
High PSRR enhances power stability under fluctuating input conditions
Enable feature allows for easy power management and further power savings
Key Technical Parameters
Voltage - Input (Max): 16V
Voltage - Output (Min/Fixed): 3.3V
Voltage Dropout (Max): 0.37V @ 100mA
Current - Output: 100mA
Current - Quiescent (Iq): 95 µA
PSRR: 63dB (1kHz)
Operating Temperature: -40°C ~ 125°C
Quality and Safety Features
Short Circuit Protection
Over-Temperature Protection
Over-Current Protection
Compatibility
Compatible with a wide range of electronic devices requiring a stable 3.3V supply
Mounting Type: Surface Mount
Package / Case: SC-74A, SOT-753
Application Areas
Portable and battery-operated devices
Microcontroller power supply
Wireless communication systems
Sensors and instrumentation
Product Lifecycle
Status: Active
This product is not currently nearing discontinuation, ensuring availability for future designs and replacements.
Several Key Reasons to Choose This Product
Optimized for portable applications due to low dropout and quiescent current
High reliability and robust protection mechanisms protect the application circuit
The enable control feature aids in achieving lower power consumption
Suitable for a broad range of applications thanks to its wide operating temperature range and high PSRR
The compact SOT-23-5 package facilitates use in space-constrained applications