Infineon TLE42744DV33ATMA1 3V Low-Dropout Voltage Regulator: Features, Applications, and Technical Specifications
The Infineon TLE42744DV33ATMA1 is a monolithic integrated low-dropout voltage regulator designed to deliver a fixed output voltage of 3.3 V with a maximum output current of up to 400 mA. Engineered for robust performance in harsh automotive and industrial environments, this LDO regulator combines high accuracy, low quiescent current, and comprehensive protection features, making it a reliable choice for powering sensitive electronic control units (ECUs), sensors, and microcontrollers.
Key Features
A standout feature of the TLEER42744DV33ATMA1 is its remarkably low dropout voltage, typically 200 mV at 150 mA load current, which enhances efficiency and allows operation with input voltages very close to the output level. The device boasts a very low quiescent current of typically 40 µA in normal operation, which is crucial for reducing power consumption in always-on applications. Furthermore, it incorporates a wide array of built-in protection mechanisms, including overload protection, short-circuit protection, and overtemperature shutdown, ensuring safe operation under fault conditions. Its high immunity to reverse polarity and load dump pulses, as specified by automotive standards, underscores its ruggedness.
Primary Applications
The TLE42744DV33ATMA1 is expressly designed to meet the stringent requirements of the automotive industry. It is ideally suited for powering systems that require a stable and clean voltage rail, such as:
Body Control Modules (BCMs)
Instrument Clusters
Infotainment Systems
Sensor Supply Modules
Engine Control Units (ECUs)
Beyond automotive electronics, its reliability also makes it a perfect fit for industrial control systems, consumer electronics, and battery-powered devices where stable voltage regulation is paramount.
Technical Specifications
Output Voltage: 3.3 V ±2% (at 5 mA ≤ I_O ≤ 400 mA, 4.75 V ≤ V_I ≤ 40 V)
Output Current: Up to 400 mA
Dropout Voltage: Typ. 200 mV (at I_O = 150 mA)
Quiescent Current: Typ. 40 µA
Input Voltage Range: 3.0 V to 40 V (survives 45 V load dump)
Operating Temperature Range: -40 °C to +150 °C (junction temperature)
Package: PG-TO252-5 (DPAK)
The Infineon TLE42744DV33ATMA1 stands out as an exceptionally robust and efficient 3.3V LDO regulator. Its combination of low dropout voltage, minimal quiescent current, and extensive protective features makes it an superior solution for demanding automotive and industrial applications where reliability and performance cannot be compromised.
Keywords: Low-Dropout (LDO) Regulator, Automotive Grade, 400mA Output Current, Low Quiescent Current, Overcurrent Protection.
