Infineon Technologies TLE4276GV10NTMA1

Overview

TLE4276GV10NTMA1 from Infineon Technologies is a fixed 10 V low-dropout linear voltage regulator in TO-220 AB/5 (Option E3122) package, delivering up to 400 mA output current with ±4% output voltage tolerance, 250–500 mV dropout at 250 mA, and inhibit-controlled shutdown. It operates from 11 V to 40 V input, features reverse-polarity and short-circuit protection, and is qualified for automotive power supply rails.

For engineers reviewing the TLE4276GV10NTMA1 datasheet, TLE4276GV10NTMA1 pinout, TLE4276GV10NTMA1 application, or TLE4276GV10NTMA1 equivalent, key selection criteria include its 10 V fixed output, thermal shutdown behavior, INH pin logic level thresholds (0.5–1.7 V off / 2–3.5 V on), and stability with ≥22 µF output capacitor (ESR ≤3 Ω).

Technical Context

The TLE4276GV10NTMA1 uses an internal bandgap reference and control amplifier to regulate output against load and line variations, with saturation control preventing power transistor oversaturation. Its protection circuits independently monitor temperature, output short-circuit, and reverse polarity conditions.

It accepts a low-active inhibit signal (INH) that reduces quiescent current to ≤10 µA when asserted, and maintains regulation stability across –40 °C to +150 °C junction temperature using external input/output capacitors-CI for line transient suppression and CQ (≥22 µF, ESR ≤3 Ω) for loop stability.

Key Specifications

Pinout & Package

Package: TO-220 AB/5 (Option E3122), thermally enhanced through-hole package with exposed tab electrically connected to Pin 3 (GND). Mounting requires mechanical fastening and thermal interface to heatsink for >250 mA operation.

Key Features

Applications

Equivalent & Alternatives

The following parts are listed as comparable options for similar fixed-output automotive LDO applications.

Compared with TLV1117-10CDT and NCV8664ST10T3G, the TLE4276GV10NTMA1 uniquely combines 400 mA drive, 500 mV dropout, inhibit control, and full automotive qualification-making it irreplaceable for mid-power body electronics requiring robustness and sequenced enable.

Availability

TLE4276GV10NTMA1 is available at Aetrix Electronics and suitable for body control modules, instrument clusters, telematics units, and ADAS camera subsystems requiring stable component supply under automotive environmental stress.

Supply support for TLE4276GV10NTMA1 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 ICs, and industrial control solutions, with global manufacturing and automotive qualification infrastructure.

The TLE4276 series belongs to Infineon's automotive linear regulator product line, designed specifically for robust, high-reliability power conditioning in engine control, chassis, and infotainment systems.

FAQ

What is the maximum allowable input voltage for TLE4276GV10NTMA1?

The absolute maximum input voltage is 45 V, but the recommended operating range is 11 V to 40 V for 10 V output. Operation above 40 V risks exceeding thermal limits even with adequate heatsinking, and prolonged exposure near 45 V may accelerate parametric drift per AEC-Q100 lifetime testing requirements.

Can TLE4276GV10NTMA1 be used without an output capacitor?

No. An output capacitor of ≥22 µF with ESR ≤3 Ω is mandatory for closed-loop stability. Omitting it causes oscillation and output voltage collapse under load, as confirmed by Figure 2's feedback path and stability analysis in Section 6 of the datasheet. Ceramic-only solutions are insufficient due to excessively low ESR.

Is the exposed tab on the TO-220 package electrically connected?

Yes-the exposed metal tab is internally connected to Pin 3 (GND). It must be mounted to a grounded heatsink using an insulating thermal pad or washer only if isolation from chassis ground is required; otherwise, direct metal-to-metal contact improves thermal resistance by ~4 K/W.

Does TLE4276GV10NTMA1 support adjustable output voltage?

No. The 'V10' suffix denotes a fixed 10 V output version. Adjustable variants (e.g., TLE4276GV) use Pin 4 (VA) for external resistor divider feedback, but TLE4276GV10NTMA1 has Pin 4 marked N.C. and lacks internal VA circuitry-its feedback network is trimmed and laser-fused during production.