Manufacturer Part Number
LD2981ABU33TR
Manufacturer
stmicroelectronics
Introduction
The LD2981ABU33TR is an LDO regulator designed to provide a fixed output with low dropout voltage and low quiescent current, suitable for various applications.
Product Features and Performance
LDO (Low Drop Out) regulator
Fixed output configuration
Positive output type
Low dropout voltage of 0.375V at 100mA load
Output Voltage: 3.3V
Input Voltage up to 16V
Quiescent Current: 150 µA
Output Current up to 100mA
PSRR (Power Supply Rejection Ratio): 63dB at 1kHz
Operating temperature range from -40°C to 125°C
Product Advantages
High efficiency under low dropout conditions
Stability with low quiescent current
Enhanced reliability with overcurrent and overtemperature protection
Key Technical Parameters
Voltage Input (Max): 16V
Voltage Output (Min/Fixed): 3.3V
Voltage Dropout (Max): 0.375V @ 100mA
Current Output: 100mA
Current Quiescent: 150 µA
PSRR: 63dB (1kHz)
Quality and Safety Features
Over Current Protection
Over Temperature Protection
Compatibility
SOT-89-3 package compatible with surface mount technologies
Application Areas
Consumer Electronics
Portable devices
Low-power applications
Product Lifecycle
Status: Active
Not nearing discontinuation; replacements or upgrades available as required.
Several Key Reasons to Choose This Product
Reliable performance in temperature extremes (-40°C to 125°C)
Ideal for power-sensitive applications due to low dropout and quiescent current
Robust protection features ensure long-term reliability
Compact and surface-mount package for easy integration into design