Infineon Technologies TLE4267GMXUMA2

Overview

TLE4267GMXUMA2 from Infineon is a 5 V automotive-grade low-dropout linear voltage regulator in PG-DSO-14 package, delivering ≥400 mA output current with ±2% output voltage tolerance, input voltage range of 5.5–40 V, and integrated reset function down to 1 V output. It features overvoltage protection up to 60 V (≤400 ms), reverse polarity protection, and AEC-Q100 qualification for battery-connected vehicle systems.

For engineers reviewing the TLE4267GMXUMA2 datasheet, TLE4267GMXUMA2 pinout, TLE4267GMXUMA2 application, or TLE4267GMXUMA2 equivalent, key selection criteria include reset delay adjustability via external capacitor, open-collector reset output with 30 kΩ internal pull-up, inhibit logic level control, thermal shutdown behavior, and short-circuit proof operation under automotive load dump conditions.

Technical Context

The TLE4267GMXUMA2 implements a bandgap-referenced control amplifier driving a pass transistor with saturation control and integrated protection circuitry. Its reset generator uses an external capacitor on the D pin to set delay time, while the E6 (Hold) pin monitors output voltage via a 50 kΩ internal pull-up to enable hold-off during brown-out recovery.

It operates across -40°C to +150°C junction temperature, supports input transients up to 60 V for ≤400 ms, and maintains regulation down to 1 V output before asserting reset - critical for fail-safe microcontroller supervision in 12 V automotive networks.

Key Specifications

Pinout & Package

Package: PG-DSO-14 (RoHS-compliant, thermally enhanced SOIC with exposed pad). Pin 1 = Input (I); Pin 2 = Inhibit (E2, active-high enable with 100 kΩ internal pull-down); Pins 3/4/5/10/11/12 = GND; Pin 7 = Reset Output (RO, open-collector, 30 kΩ internal pull-up to Q); Pin 8 = Reset Delay (D, connects to GND via timing capacitor); Pin 9 = Hold (E6, tied to Q via 50 kΩ internal resistor); Pin 13 = 5 V Output (Q); Pins 6 & 14 = Not Connected.

Key Features

Applications

Equivalent & Alternatives

The following parts are listed as comparable options for similar 5 V automotive LDO regulator applications.

Compared with TLV73350PDBVR and TPS7B8750QKVURQ1, the TLE4267GMXUMA2 uniquely combines AEC-Q100 Grade 0 qualification, integrated reverse polarity protection, and fixed 1 V reset threshold - making it optimal for cost-sensitive, space-constrained body electronics where full fault coverage is mandatory.

Availability

TLE4267GMXUMA2 is available at Aetrix Electronics and suitable for automotive body control modules, engine management systems, and ADAS camera ECUs requiring stable component supply under extended temperature and transient stress conditions.

Supply support for TLE4267GMXUMA2 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 security solutions, with global manufacturing and R&D infrastructure.

The OPTIREG™ linear product line delivers robust, AEC-Q100-qualified voltage regulators designed specifically for automotive power domains - emphasizing fault resilience, wide input range, and integrated protection for direct-battery-connected applications.

FAQ

What is the minimum input voltage required for regulation?

The TLE4267GMXUMA2 requires a minimum input voltage of 5.5 V to maintain 5 V output regulation, supporting operation during cold-crank conditions per ISO 16750-2. Below this threshold, the device enters dropout and output follows input minus saturation voltage, with reset asserted at 1 V output.

How is the reset delay time calculated from the external capacitor?

Reset delay is determined by the RC time constant formed between the external capacitor on pin D and an internal 100 kΩ resistor. For example, a 100 nF capacitor yields approximately 10 ms delay; exact values are provided in Figure 14 of the datasheet (Rev. 2.61), with typical delay ranging from 1 ms to 1 s depending on capacitance.

Does the TLE4267GMXUMA2 require an external pull-up on the RO pin?

Yes - the RO pin is an open-collector output with only an internal 30 kΩ resistor connecting it to the Q (5 V) output. To drive a standard CMOS reset input (e.g., on an MCU), an external pull-up resistor to a compatible logic rail (e.g., 3.3 V or 5 V) is required to ensure valid high-level voltage during normal operation.

Can the TLE4267GMXUMA2 be used without the E6 (Hold) pin connected?

Yes - the E6 pin is internally pulled up to Q via 50 kΩ, so leaving it unconnected allows normal reset hold-off behavior during output recovery. However, grounding E6 forces immediate reset release, and pulling it above 1.5 V disables hold functionality entirely; intended use is direct connection to Q unless custom timing behavior is needed.