Infineon Technologies TLE42694GMXUMA1

Overview

TLE42694GMXUMA1 from Infineon Technologies is a monolithic automotive-grade low-dropout linear voltage regulator delivering a stable 5.0 V ±2% output at up to 150 mA, featuring integrated power-on/undervoltage reset with programmable delay, reverse polarity protection, and overtemperature shutdown. It operates across -42 V to +45 V input range and supports junction temperatures from -40 °C to 150 °C, making it suitable for engine control units and body electronics.

For engineers reviewing the TLE42694GMXUMA1 datasheet, TLE42694GMXUMA1 pinout, TLE42694GMXUMA1 application, or TLE42694GMXUMA1 equivalent, key selection considerations include its adjustable reset threshold (down to 1 V), 200 mV typical dropout at 100 mA, internal 20 kΩ pull-up on open-collector reset output, and PG-SSOP-14 exposed pad thermal performance.

Technical Context

The device integrates a PNP pass transistor controlled by an internal bandgap reference and error amplifier, with stability dependent on external output capacitor (CQ ≥ 4.7 µF, ESR ≤ 2.7 Ω). Its reset generator uses an external capacitor on pin D to set power-on delay and an external resistor divider on RADJ to adjust threshold from internal 4.65 V down to 1 V.

Protection circuitry includes current limiting (150–500 mA trip range), reverse polarity tolerance (−42 V), thermal shutdown at ~151 °C with 15 °C hysteresis, and built-in pull-up resistors on logic outputs. The exposed pad must be connected to GND for thermal conduction and EMI reduction.

Key Specifications

Pinout & Package

Package: PG-SSOP-14 with exposed thermal pad (connected to GND for optimal heat dissipation and EMI suppression).

Key Features

Applications

Equivalent & Alternatives

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

Compared with TLV73350PDBVR and TPS7B6950QDCYRQ1, the TLE42694GMXUMA1 uniquely combines reverse polarity protection, adjustable reset threshold down to 1 V, and −42 V tolerance - essential for robustness in direct-battery-connected automotive modules.

Availability

TLE42694GMXUMA1 is available at Aetrix Electronics and suitable for engine control units, body control modules, ADAS sensor nodes, and infotainment power rails requiring stable component supply under harsh automotive transients.

Supply support for TLE42694GMXUMA1 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 security solutions, with global manufacturing and AEC-Q100 validation infrastructure.

The TLE42694GMXUMA1 belongs to Infineon's TLE automotive linear regulator family, designed specifically for high-reliability 5 V supply and system supervision in engine bay and chassis electronics.

FAQ

What is the minimum input voltage required for regulation?

The TLE42694GMXUMA1 maintains regulation down to VI = 5.2 V (5.0 V + 200 mV dropout) at 100 mA load. Below this, output voltage drops linearly with input. For stable operation during cold-crank events, ensure input remains above 5.5 V per functional range specifications.

How do I configure the reset delay time?

Connect a ceramic capacitor between pin D and GND. Delay time t_delay ≈ 1.1 × R_int × C_D, where R_int is internal 100 kΩ. For example, a 100 nF capacitor yields ~11 ms delay. Leave pin D open to disable reset functionality entirely.

Can the exposed thermal pad be left floating?

No. The exposed pad must be soldered to a GND plane with multiple thermal vias. Leaving it unconnected degrades thermal resistance by >30 K/W and risks thermal shutdown under 100 mA load. It also serves as EMI shield and low-inductance return path.

Is external output capacitance mandatory?

Yes. A minimum 4.7 µF ceramic or tantalum capacitor with ESR ≤2.7 Ω at 10 kHz is required for loop stability and transient response. Omitting it causes oscillation or failure to regulate. Place it within 5 mm of pins 11 (Q) and 4/6 (GND) with short, wide traces.