Infineon Technologies TLE4287GXUMA1

Overview

TLE4287GXUMA1 from Infineon Technologies is a monolithic 5-V automotive voltage regulator in PG-DSO-14 package, delivering ≥250 mA output current with ±2% output voltage tolerance (4.90–5.10 V), input voltage range 7.5–42 V, and integrated reset generator with adjustable delay via external capacitor. It enables self-holding logic for ignition-controlled power sequencing in engine control units.

For engineers reviewing the TLE4287GXUMA1 datasheet, TLE4287GXUMA1 pinout, TLE4287GXUMA1 application, or TLE4287GXUMA1 equivalent, key selection criteria include AEC-Q100 qualification, reverse polarity protection, on/off logic with EN/H pins, reset threshold at 4.65 V (typ), and operation across −40 °C to +150 °C junction temperature.

Technical Context

The TLE4287GXUMA1 implements a bandgap-referenced control amplifier driving a series pass transistor, regulating input (7.5–42 V) to stable 5 V output with ≤25 mV line/load regulation. Its reset generator uses dual-threshold comparators (VDL = 0.43 V, VDU = 3.0 V) and an external capacitor on pin 8 to set delay time independently of supply voltage.

Turn-on/turn-off logic combines active-high EN (internally pulled down 100 kΩ) and active-low H (pulled up 50 kΩ to Q), enabling self-holding without external components: device remains ON after EN deasserts if H stays LOW. Protection includes overtemperature shutdown, short-circuit proofing, and reverse polarity tolerance.

Key Specifications

Pinout & Package

Package: PG-DSO-14 (14-pin exposed-pad SOIC variant, RoHS-compliant, thermal resistance R_thj-a = 112 K/W on 80×80 mm PCB).

Key Features

Applications

Equivalent & Alternatives

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

Compared with TLV70750PDBVR and MAX16910ATA+T, the TLE4287GXUMA1 uniquely integrates self-holding logic, reverse polarity protection, and AEC-Q100 Grade 0 qualification in a single PG-DSO-14 package-enabling simplified, robust power sequencing in primary automotive ECUs without auxiliary components.

Availability

TLE4287GXUMA1 is available at Aetrix Electronics and suitable for engine control units, body control modules, ADAS camera systems, and electric power steering requiring stable component supply across automotive production lifecycles.

Supply support for TLE4287GXUMA1 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 is a German semiconductor manufacturer specializing in power management, automotive, and industrial control ICs, with global manufacturing and AEC-Q100 validation infrastructure.

The TLE4287GXUMA1 belongs to Infineon's TLE automotive linear regulator family, designed specifically for high-reliability, high-temperature power supply in engine bay and chassis control applications.

FAQ

What is the minimum input voltage required for regulation?

The TLE4287GXUMA1 requires a minimum input voltage of 7.5 V to maintain 5 V output regulation, as specified in Table 4. Below this, the output drops linearly with input; it is not functional at battery voltages below cranking thresholds (e.g., <6 V). This ensures stable operation during engine start while avoiding dropout-induced MCU resets.

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

Reset delay time t_D ≈ C_D × (V_DU − V_DL) / I_D,c, where C_D is the capacitor on pin 8, V_DU = 3.0 V (typ), V_DL = 0.43 V (typ), and I_D,c = 15 μA (typ). For example, a 100 nF capacitor yields ~17 ms delay. The exact value depends on measured capacitor tolerance and temperature drift.

Does the TLE4287GXUMA1 require an input capacitor, and what value is recommended?

Yes-an input capacitor (C_I) is mandatory for stability and EMI suppression. Infineon recommends ≥1 μF ceramic capacitor placed directly between pin 1 (I) and adjacent GND pins (3/4/5). A 1 Ω damping resistor in series with C_I suppresses resonance caused by PCB trace inductance, especially in high-noise engine environments.

Can the TLE4287GXUMA1 be used without the hold (H) pin connected?

Yes-the H pin may be left open (floating) or tied to GND depending on desired behavior. When open, internal 50 kΩ pull-up to Q holds H HIGH, disabling self-hold and making the device fully EN-controlled. To enable self-hold, H must be actively driven LOW by an external controller (e.g., MCU GPIO) during EN assertion.