Le blog de l'entreprise Mingjiada Electronics Supplies Infineon TLE4254: Automotive-Grade High-Precision Low-Dropout Tracking Regulator (PG-DSO-8)

Mingjiada Electronics maintains a long-term stock of the Infineon OPTIREG™ linear Trackers series automotive-grade low-dropout tracking regulators, model TLE4254. Housed in a compact PG-DSO-8 package, this device features a 70 mA output current capability and can precisely track the reference voltage at the Adjust input (down to 2.0 V). It is specifically designed to power off-board systems in harsh environments, such as automotive powertrains and sensor power supplies. As a long-term distribution partner of Infineon, Mingjiada Electronics provides customers with genuine, in-stock TLE4254 units, BOM fulfillment, and technical support services.

TLE4254 Key Technical Specifications

The TLE4254 belongs to Infineon’s OPTIREG™ linear Trackers family and is a monolithic, integrated low-dropout voltage-tracking regulator. Its core function is to enable the output voltage to track the reference voltage on the “Adjust” pin with high precision; the reference voltage can be connected directly or provided via an external resistive divider.

Specifications

Manufacturer: Infineon Technologies

Product Series: OPTIREG™ linear Trackers

Package: PG-DSO-8 (8-SOIC, 3.90 mm wide)

Output Current (Max.): 70 mA

Input Voltage Range: 4 V to 45 V (wide range: -20 V ≤ V_I ≤ +45 V)

Output Voltage: Adjustable, down to 2.0 V, tracking the reference voltage

Dropout Voltage (Typical): 0.2 V @ Maximum Output Current

Accuracy: 0.1%

Quiescent Current: 50 µA

PSRR: 60 dB (100 Hz)

Operating Junction Temperature: -40°C to +150°C

Automotive Certification: AEC-Q100

Key Features: High-precision tracking + automotive-grade robustness

The value of the TLE4254 lies not only in “voltage regulation,” but also in the combination of “tracking” and “protection.”

High-precision voltage tracking. The output tracks the reference voltage with 0.1% accuracy; the output voltage can be either higher or lower than the reference voltage and is proportional to the reference value (GA/EJ A versions), providing a flexible and precise voltage rail for powering sensors and secondary microcontrollers. It operates stably with just a 1 µF ceramic output capacitor, helping to reduce the number of external components and board area.

Comprehensive protection for automotive applications. The input features reverse polarity protection, while the output includes short-circuit protection to ground and to the battery, as well as integrated over-temperature protection. This enables the TLE4254 to operate reliably in harsh electrical environments such as automotive powertrains. A wide input voltage range (-20 V ≤ V_I ≤ +45 V) and a junction temperature range of -40°C to +150°C further accommodate automotive power supply conditions such as cold starts and load dumping.

Low Power Consumption and Shutdown Control. The device consumes extremely low current in OFF mode, and the reference voltage input and enable input are combined into a single pin, facilitating low-power standby management in the system.

Typical Applications

The TLE4254 is specifically designed to “power off-board systems under harsh automotive conditions.” Typical applications include:

Sensor power supply. Providing a clean, precise reference voltage rail for sensors in powertrain management systems (crankshaft, camshaft, pressure, and position sensors, etc.) is the TLE4254’s core application.

ADAS and domain controllers. Infineon lists “ADAS & Autonomous Driving domain controllers” as one of the device’s application areas, addressing the need for high-precision auxiliary power supplies in sensor fusion and radar/camera modules.

EV traction inverters and main power distribution. In electric vehicle traction inverters and primary power distribution units, the TLE4254 can serve as part of an auxiliary voltage-tracking supply path.

Secondary Microcontroller Power Supply. When a system already has a main 5 V regulated output, the TLE4254 can precisely track this 5 V reference to provide a voltage rail for microcontrollers and ICs that require an independent power supply or downstream regulation.

Why Choose MJD Electronics for the TLE4254

Founded in 1996, MJD Electronics (MJD) has branches in Shenzhen, Hong Kong, Japan, Russia, and Taiwan. The company is ISO 9001 and ISO 14001 certified and is one of Infineon’s long-term distribution partners. For the TLE4254, MJD offers:

Genuine, in-stock supply: PG-DSO-8 package, transparent part number information, and support for small-batch samples and mass production orders;

Rapid response: The sales team at the Shenzhen headquarters works in coordination with the Hong Kong warehouse to shorten lead times.

For inquiries and samples, please contact us at 86-755-83294757 / 13410018555 or via email at sales@hkmjd.com. Simply provide the part number TLE4254 and your desired quantity to receive a real-time quote and stock confirmation.

Tags: TLE4254GA, TLE4254G, TLE4254