New Original Stock LF33ABDT MARKING LF33A Voltage Regulators IC input to 16V, output 3,3V, 500mA LF00 series Very low drop voltage regulators with inhibit 

LF33ABDT Linear Voltage Regulator IC Positive Fixed 1 Output 500mA DPAK

LF33ABDT Product Introduction

LF33ABDT is a low dropout (LDO) linear regulator launched by ST. It adopts SO-8 package and is designed for portable devices that require a stable 3.3V power supply. With its low power consumption, high precision and perfect protection functions, it is widely used in consumer electronics, industrial control and automotive electronics.

Core Features
1. Output voltage: fixed output 3.3V, with an accuracy of up to ±2% (full temperature range), ensuring stable power supply for sensitive circuits.
2. Output current: The maximum output current is 500mA, which can drive low-power microcontrollers, sensors and other loads.
3. Input voltage range: supports a wide input range of 4.5V to 23V, adapting to a variety of power supply scenarios (such as battery power supply, adapter input).
4. Dropout voltage: Under 500mA load, the dropout voltage is as low as 380mV (typical value), improving power conversion efficiency.
5. Quiescent current: The typical value is 60μA (no-load), which significantly reduces standby power consumption and extends battery life.
6. Overheat protection: Built-in temperature sensor, automatically shuts down when the junction temperature exceeds 150℃ to prevent device damage.
7. Overcurrent protection: Limit the output current to less than 700mA to avoid failures caused by load short circuit.
8. Short circuit protection: When the output is short-circuited, it automatically enters the current limiting mode to protect the subsequent circuit.
9. Reverse current protection: Prevents reverse current generated when the output voltage is higher than the input, enhancing system reliability.
10. Stability: No external compensation capacitor is required, and it can remain stable when the output capacitance is as low as 1μF, simplifying PCB design.
11. Noise performance: The output noise is as low as 50μVrms (10Hz to 100kHz), suitable for noise-sensitive RF or analog circuits.
12. Package form: SO-8 compact package with a size of 5mm×4.9mm×1.5mm, saving PCB space and facilitating layout design.
13. Operating temperature: Supports a wide temperature range of -40℃ to 125℃, adapting to harsh industrial environments.

Application areas
1. Portable devices: Power management of smartphones, tablets, and Bluetooth headsets, providing 3.3V power for processors, memory, etc.
2. Smart home: Low power design of smart speakers and security cameras to extend battery life.
3. Automation equipment: Power supply for PLC and sensor nodes to ensure stability under wide voltage input.
4. Test instruments: Low noise power supply design for oscilloscopes and multimeters to improve measurement accuracy.
5. In-vehicle entertainment system: Provides a stable 3.3V power supply for navigation modules and USB interfaces, in compliance with AEC-Q100 standards.
6. Body control module: manages the power supply of windows, seats, lights and other systems, and achieves reliable communication through the CAN bus.
7. Routers and switches: provide low-noise power supply for Ethernet PHY and optical modules to ensure the stability of network equipment.
8. Base station equipment: power management of RF modules in 5G base stations, adapting to wide voltage input and harsh environments.