LP2985-33DBVR 3.3V Low-Noise LDO Voltage Regulator (150mA, SOT-23-5)

Deliver ultra-clean, rock-solid power to your sensitive electronics with the LP2985-33DBVR low-dropout (LDO) linear regulator. When building custom flight controllers, repairing radio receivers (like ExpressLRS or Crossfire), or powering delicate sensors, a noisy power supply can cause jittery gyro readings and signal dropouts. This precision IC solves that by providing a highly stable 3.3V output with an exceptionally low noise profile, ensuring your microcontrollers (STM32, ESP8266) and 6-axis IMUs perform at their absolute best.

Operating from an input voltage of up to 16V, it efficiently drops the voltage to 3.3V while supplying up to 150mA of continuous current. One of its standout features is the dedicated Shutdown (Enable) pin, which allows you to turn the regulator off via a logic signal, dropping its power consumption to almost zero—perfect for battery-operated DIY drones and portable IoT devices. Housed in a standard 5-pin SOT-23 package, it takes up minimal PCB space while offering maximum reliability.

Key Features:

• Ultra-Low Noise: Designed to minimize electrical ripple, making it the perfect power source for sensitive analog sensors, gyroscopes, and RF transceivers.

• Logic-Controlled Shutdown: Features an Enable pin that allows a microcontroller to shut down the regulator, saving critical battery life when the circuit is idle.

• Wide Input Range: Safely accepts input voltages up to 16V, making it highly versatile for stepping down various battery configurations.

• Built-in Protection: Includes overcurrent and thermal shutdown protections to prevent damage under fault conditions.

Specifications:

• Part Number: LP2985-33DBVR

• IC Type: Linear Voltage Regulator (LDO)

• Output Voltage: 3.3V (Fixed)

• Maximum Output Current: 150 mA

• Input Voltage Range: 2.5V to 16V

• Package Type: SOT-23-5 (SMD/SMT)