I. Product Overview
TLE42744GSV33 is an automotive-grade low-dropout (LDO) linear regulator launched by Infineon, designed for harsh environments such as automotive electronics. The device can stabilize a wide range of input voltages from 4.7V to 40V to 3.3V, with an output current of up to 400mA and an accuracy of ±2%. It also has an extremely low quiescent current (100µA), which is suitable for applications that require long-term connection to the vehicle battery.

II. Core Features

1. Input voltage: 4.7V to 40V, covering automotive power systems (such as 12V/24V batteries) and industrial scenarios.
2. Output voltage: fixed 3.3V, accuracy ±2%, to meet the power supply needs of modules with high voltage stability requirements.
3. The quiescent current is only 100µA (typical value), which significantly reduces standby power consumption and extends battery life.
250mV low dropout voltage (at VI=13.5V) improves light load efficiency.
4. Built-in output current limit, over-temperature shutdown, reverse polarity protection and short-circuit protection ensure stable operation under overload or extreme conditions.
5. Meets AEC-Q100 automotive-grade certification, operating temperature range -40°C to 150°C, adapting to high temperature environments such as engine compartments.

III. Application areas

1. Automotive electronics: electric vehicle traction inverter, ADAS (Advanced Driver Assistance System) domain controller, body control module (BCM). Smart sensor power supply, in-vehicle entertainment system, motor drive (such as variable frequency and voltage conversion applications).
2. Industrial and consumer electronics: industrial control equipment, smart instruments, security systems, etc. that require stable 3.3V power supply.
3. Replace traditional LDO (such as AMS1117-3.3), with better performance in input voltage range, temperature adaptability and protection functions.