Automotive LDO product overview

Infineon has over 20 years of experience developing and adopting power supply ICs for automotive applications, and offers a lineup for a wide range of uses.

Among them, LDOs are broadly divided into four types of lineups, with emphasis on high precision, low noise, and low Iq."High Performance LDO",Ideal for sensors and off-board loads that track an external reference voltage"Tracker", placed after the DC-DC converter, it can pass a large amount of current in response to low output voltage. "Post Regulator", for special applications such as antenna power supplies"Application Specific"There is a series.

Please scroll down to see each lineup or check the table of contents on the left.

Product features

• High-speed response suppresses output voltage fluctuations
• Ultra-low dropout voltage
• Contributes to low dark current at the system level
• Minimum 1µF output capacitor ensures stability
• High quality through continuous quality improvement activities
• Package lineup that takes heat dissipation into consideration

Package List

High Performance LDO

High-performance LDOs feature fast response, stability under severe cranking, ultra-low dropout voltage, and low quiescent current. Maximum output currents range from 50mA to 500mA, and the lineup includes a wide range of additional features and packages. Output voltages are available as 5.0V, 3.3V, and adjustable, but the TLS835x2EL VSE series allows you to select either 3.3V or 5.0V. All products are Tj=150°C compatible, making them suitable for a wide range of applications, including powertrain, chassis, safety, and body systems.

EN：Enable

RES：Reset

WD：Watchdog

-V: Variable output voltage type

-V33: Output voltage 3.3V

-V50: Output voltage 5.0V

-VSE: Output voltage selectable between 3.3V and 5.0V

Tracker

The Tracker is designed to power sensors off-board, and in addition to excellent voltage accuracy, it has various protection functions against overvoltage, overheating, reverse polarity, reverse current, etc. With its robust design andAEC-Q100compliant package, the Trackeris the ideal solution for protecting sensors and ECUs in harsh environments.

protective function

Off-board sensors are more likely to short out due to the external environment. The tracker's features include reverse current protection, a high voltage output terminal of up to 40V, overcurrent protection, and overheat protection, so that reverse current does not flow in the event of a short to the power supply, and the ECU can be instantly protected.

Tracker usage examples

In-vehicle microcomputer lineup

XENSIV™ Magnetic Sensor

Maximum output current	20mA	50mA	70mA	150mA	250mA	400mA
EN, ADJ, PG				TLS115D0EJ TLS115D0LD	TLS125D0EJ TLT125D0EJ
EN/ADJ (same pin), PG			TLE4254GS TLE4254EJ S			TLE4251D TLE4251G
EN/ADJ (same pin), FB			TLE4254GA TLE4254EJ A		TLE4253GS TLE4253E
EN, ADJ				TLS115B0EJ TLS115B0LD	TLE4252D
EN/ADJ (same pin)	TLS102B0MB	TLE4250-2G TLS105B0MB
package	PG-SCT595	PG-SCT595	PG-DSO-8 PG-DSO-8-EP	PG-TSON-10 PG-DSO-8-EP	PG-TO252-5 PG-DSO-8 PG-DSO-8-EP	PG-TO252-5 PG-TO263-5

EN：Enable

ADJ：Adjustment

PG：Power Good

FB：Feedback

Post Regulator

Post-regulators are called so because they are designed for use in a stage after a DC-DC converter or other device has stepped down the voltage. They are ideal for applications that require low voltage and high current, such as infotainment, camera modules, radar, dashboards, and displays.

Post Regulator Usage Example

EN：Enable

RES：Reset

-V / -TE: Variable output voltage type

-V33: Output voltage 3.3V

-V50: Output voltage 5.0V

Application Specific (LDO for antennas)

A key feature of LDOs aimed primarily at antennas is that the output current limit can be adjusted using an external resistor, enabling robust and flexible solutions. Power consumption is optimized to extend the life of active antennas, improving reliability and safety.

Example of using an LDO for an antenna

Inquiry / Quotation

If you have any questions or would like a quote regarding this product, please contact us using the form below.

Infineon's automotive lineup

Among Infineon's wide-ranging portfolio of products, we have compiled a lineup of only automotive-grade products that have been certified to AEC-Q100/AEC-Q101.
We have many products that can be considered for a variety of applications, including microcontrollers, power semiconductors, memory, and sensors, so please take a look.