Infineon Technologies IFX30081LDVGRNXUMA1

Overview

IFX30081LDVGRNXUMA1 from Infineon Technologies is an adjustable-output, 50 mA linear voltage regulator with ultra-low quiescent current (5 µA active, 1 µA enable-off), 2.75–42 V input range, 2% output accuracy, and 100 mV dropout at full load, designed for keep-alive and battery-backed industrial subsystems.

For engineers reviewing the IFX30081LDVGRNXUMA1 datasheet, IFX30081LDVGRNXUMA1 pinout, IFX30081LDVGRNXUMA1 application, or IFX30081LDVGRNXUMA1 equivalent, key selection criteria include wide VIN tolerance, sub-10 µA IQ in standby, TSON-10 thermal performance, and adjustable output via external resistor divider.

Technical Context

This LDO employs a bandgap reference with error amplifier feedback and internal saturation control to maintain regulation across 2.75–42 V input while delivering up to 50 mA. It integrates overcurrent protection, thermal shutdown, and reverse-current blocking without external components.

The device uses a dedicated ADJ pin for precision output setting and a BYP pin for optional noise reduction via external capacitor-enabling low-noise operation critical for sensor biasing and PLL supply rails.

Key Specifications

Pinout & Package

TSON-10 (3.3 × 3.3 mm, exposed thermal pad) with wettable flank leads for automated optical inspection and enhanced solder joint reliability.

Key Features

Applications

Equivalent & Alternatives

The following parts are listed as comparable options for similar adjustable LDO applications.

Compared with TLV70733DCKR and MAX6675ETA+, IFX30081LDVGRNXUMA1 uniquely combines 42 V input tolerance, 5 µA IQ, and adjustable output in a thermally efficient TSON-10 package-making it the sole fit for long-life, wide-input industrial standby regulators.

Availability

IFX30081LDVGRNXUMA1 is available at Aetrix Electronics and suitable for industrial sensor nodes, automotive body controllers, medical patient monitors, and programmable logic controllers requiring stable component supply under extended temperature and voltage stress.

Supply support for IFX30081LDVGRNXUMA1 includes scheduled delivery planning, volume procurement assistance, BOM continuity management, traceable sourcing, and lifecycle availability coordination for OEM customers, industrial embedded developers, connected-device designers, and electronics production programs.

Manufacturer

Infineon Technologies AG is a German semiconductor manufacturer specializing in power management, automotive ICs, and industrial control solutions, with global manufacturing and quality certification to ISO/TS 16949 and IATF 16949.

The IFX30081 belongs to Infineon's high-voltage, ultra-low-IQ LDO family targeting industrial and automotive keep-alive, sensor bias, and post-regulation applications where wide input range and decades-long battery life are mandatory.

FAQ

What is the minimum input voltage required for regulation at 3.3 V output?

The IFX30081LDVGRNXUMA1 requires input ≥3.4 V to sustain 3.3 V output at 50 mA due to its 100 mV dropout specification. At lighter loads, dropout decreases proportionally-e.g., 30 mV at 15 mA-allowing regulation from 3.33 V input in low-power states.

Can the BYP pin be left unconnected without affecting basic regulation?

Yes. The BYP pin is optional and may be left floating or tied to GND without impacting regulation, accuracy, or stability. It only affects output noise performance when a 10 nF capacitor is added between BYP and GND to bypass the internal reference.

Does this device require an external capacitor on the ADJ pin for stability?

No. The ADJ pin is a high-impedance feedback node and does not require any capacitor. Stability depends solely on the output capacitor (≥1 µF ceramic, ESR <100 mΩ); no compensation network or ADJ-side capacitor is needed per Infineon's validated layout guidelines.

Is the thermal pad of the TSON-10 package electrically connected internally?

No. The exposed thermal pad on the IFX30081LDVGRNXUMA1's TSON-10 package is not electrically connected to any internal node. It must be soldered to a PCB thermal plane for heat dissipation but may remain at GND potential or float-no electrical tie is required or recommended.