Manufacturer Part Number
LD39020ATPU33R
Manufacturer
STMicroelectronics
Introduction
The LD39020ATPU33R is a low drop out (LDO) regulator designed for powering sensitive loads in power management applications.
Product Features and Performance
Positive output configuration with fixed 3.3V output voltage
Low dropout voltage of 0.35V at 200mA
Output current capacity of 200mA
Very low quiescent current of 40µA optimizing power efficiency
High PSRR of 80dB to 55dB across 1kHz to 100kHz, ensuring stable operation over frequency changes
Includes enable control feature for power optimization
Integrated over current and over temperature protection with soft start capability for enhanced safety
Supports a wide operating temperature range from -40°C to 125°C
Product Advantages
High power supply rejection ratio (PSRR) ensures reliability in fluctuating power supply conditions.
Low dropout and quiescent current features contribute to power efficiency, making it ideal for battery-operated devices.
Compact 4-XDFN Exposed Pad package saves space on PCB designs.
Offers essential protection features for longevity and stability of the application.
Key Technical Parameters
Voltage Input (Max): 5.5V
Voltage Output (Min/Fixed): 3.3V
Current Output: 200mA
Voltage Dropout (Max): 0.35V @ 200mA
Current Quiescent (Iq): 40 µA
PSRR: 80dB ~ 55dB (1kHz ~ 100kHz)
Operating Temperature: -40°C ~ 125°C
Quality and Safety Features
Over Current protection
Over Temperature protection
Soft Start functionality
Compatibility
The LD39020ATPU33R is designed to be compatible with a wide range of microcontrollers, sensors, and other power-sensitive components requiring a stable 3.3V supply.
Application Areas
IoT devices
Battery-powered applications
Portable electronics
Microcontroller power supply
Peripheral sensors
Product Lifecycle
The LD39020ATPU33R is currently listed as an active product, indicating it is still in production with no immediate intention for discontinuation. Availability of replacements or upgrades depends on STMicroelectronics’ future product roadmap.
Several Key Reasons to Choose This Product
High efficiency and low quiescent current ideal for power-sensitive applications.
Robust output voltage stability thanks to high PSRR over a broad frequency range.
Integrated protection features safeguard the device and the load from power anomalies.
Compact packaging suitable for space-constrained designs.
Wide operating temperature range fits various operating environments.
Currently active product lifecycle status ensures ongoing availability and support.
