Infineon Technologies TLE72722EXUMA1

Overview

TLE72722EXUMA1 from Infineon Technologies is a monolithic 5-V low-dropout linear voltage regulator with integrated power-on/undervoltage reset, enable control, and overtemperature shutdown-designed for automotive microcontroller supply. It delivers up to 300 mA output current, maintains ±2% output voltage accuracy (4.9–5.1 V), achieves 250 mV typical dropout at 200 mA, and operates across −40 °C to +150 °C junction temperature.

For engineers reviewing the TLE72722EXUMA1 datasheet, TLE72722EXUMA1 pinout, TLE72722EXUMA1 application, or TLE72722EXUMA1 equivalent, key selection criteria include ultra-low quiescent current (20 µA typ.), reset functionality down to V_Q = 1 V, ceramic capacitor compatibility (≥470 nF), AEC-Q100 qualification, and PG-SSOP-14 exposed pad thermal performance.

Technical Context

The TLE72722EXUMA1 integrates a charge pump-based LDO core with bandgap reference and internal reset generator that monitors output voltage and asserts open-collector RO when V_Q falls below threshold. Its enable input features an integrated pull-down resistor, allowing direct microcontroller GPIO control without external biasing.

Thermal protection uses junction-sensing with automatic shutdown and hysteresis recovery; current limiting operates in two modes-foldback at nominal load and short-circuit clamp at 800 mA. The device supports reverse-current sink to limit Q-pin voltage to ≤5.5 V during backfeed conditions.

Key Specifications

Pinout & Package

Package: PG-SSOP-14 exposed pad (RoHS-compliant, thermally enhanced). Exposed pad must be soldered to PCB ground plane and heatsink area for R_thJC = 14 K/W thermal path.

Key Features

Applications

Equivalent & Alternatives

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

Compared with TLV73350PDBVR and TPS7B6950QDCYRQ1, TLE72722EXUMA1 uniquely combines AEC-Q100 Grade 0, 150 °C operation, reset down to 1 V, and exposed-pad thermal performance-making it the only choice for under-hood ECU main supply where thermal margin and functional safety are non-negotiable.

Availability

TLE72722EXUMA1 is available at Aetrix Electronics and suitable for engine control units, body control modules, ADAS sensor hubs, and electric power steering systems requiring stable component supply across extended automotive lifecycles.

Supply support for TLE72722EXUMA1 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 TLE7272 series belongs to Infineon's automotive-grade linear regulator product line, engineered specifically for harsh-environment microcontroller supply in powertrain and chassis systems where reliability, thermal robustness, and functional safety are paramount.

FAQ

What is the minimum input voltage required for regulation at full 300 mA load?

The TLE72722EXUMA1 maintains regulation down to VI = 5.25 V at 200 mA (250 mV dropout), and VI ≥ 5.5 V is specified in the functional range. At full 300 mA, dropout increases slightly; design margin requires VI ≥ 5.7 V to guarantee 4.9 V output across temperature and tolerance. This enables reliable operation during automotive cold-crank events where battery dips to 6 V.

Can the RO pin drive a standard 5-V logic input directly?

No-the RO pin is an open-collector output with only an internal pull-up to V_Q. To interface with 5-V logic, an external pull-up resistor ≥10 kΩ to V_Q is required. Without it, RO floats high when inactive and pulls low only during reset. Driving CMOS inputs directly risks undefined logic levels and violates recommended operating conditions per datasheet Section 3.2.

Is the exposed pad electrically isolated or connected internally?

The exposed pad is internally connected to GND and forms part of the primary thermal and electrical return path. It must be soldered to a PCB copper pour tied to system ground-not left floating or insulated. Thermal simulation data (R_thJC = 14 K/W) assumes full metal contact; omitting this connection degrades thermal performance by >3× and risks thermal shutdown under load.

Why does the datasheet specify ceramic capacitors with ESR ≤10 Ω at 10 kHz?

The TLE72722EXUMA1's internal compensation is optimized for low-ESR ceramic capacitors. An ESR >10 Ω destabilizes the control loop, causing oscillation or excessive overshoot during load transients. This specification ensures phase margin ≥45° across temperature and process variation-critical for automotive systems where transient immunity directly impacts functional safety compliance.