Infineon Technologies TLE4957CE6247HAMA1

Overview

TLE4957CE6247HAMA1 from Infineon Technologies is a monolithic Hall-effect switch in SSO-3 package, designed for contactless position sensing with 3.8–24 V supply range, ±10 mT magnetic operate point (B_OP), and -40 °C to 150 °C operating temperature. It delivers open-drain output with reverse polarity protection and is used in automotive throttle position and seat-belt latch detection.

For engineers reviewing the TLE4957CE6247HAMA1 datasheet, TLE4957CE6247HAMA1 pinout, TLE4957CE6247HAMA1 application, or TLE4957CE6247HAMA1 equivalent, key selection criteria include magnetic sensitivity tolerance, supply voltage headroom, junction temperature derating, and AEC-Q100 qualification status for under-hood deployment.

Technical Context

This device integrates a Hall sensor, voltage regulator, Schmitt trigger, and open-drain output stage on a single silicon die. Its internal regulator enables operation across wide input voltages while maintaining stable bias for the Hall element and logic circuitry.

The Schmitt trigger provides hysteresis of ±1.5 mT between B_OP and B_RP, ensuring noise-immune switching in electrically harsh environments such as engine compartments and transmission control units.

Key Specifications

Pinout & Package

SSO-3 (Small Outline Package, 3-pin, surface-mount) with exposed thermal pad for enhanced heat dissipation in high-temperature mounting environments.

Key Features

Applications

Equivalent & Alternatives

The following parts are listed as comparable options for similar Hall-effect switch applications.

Compared with US1881EUA-ABA-001-REEL, TLE4957CE6247HAMA1 offers guaranteed reverse polarity survival and tighter magnetic tolerance; versus TLE4961-3U, it provides lower operate point for smaller magnets but less transient robustness.

Availability

TLE4957CE6247HAMA1 is available at Aetrix Electronics and suitable for automotive throttle sensing, seat-belt latch detection, transmission gear selection, and brake pedal position monitoring requiring stable component supply across production lifecycles.

Supply support for TLE4957CE6247HAMA1 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 sensor solutions with global manufacturing and qualification infrastructure.

This part belongs to Infineon's TLE495x family of AEC-Q100-qualified Hall-effect switches, engineered specifically for robust, low-power position sensing in automotive powertrain and body electronics.

FAQ

What is the maximum allowable supply voltage transient for TLE4957CE6247HAMA1?

The device withstands load-dump transients up to 40 V for 400 ms per ISO 7637-2 Pulse 5a, thanks to its internal clamp structure. Continuous operation above 24 V is not permitted, and external TVS diodes are recommended only if system-level transients exceed 40 V peak.

Does TLE4957CE6247HAMA1 require an external pull-up resistor on the OUT pin?

Yes - the open-drain output requires an external pull-up resistor to define the logic-high voltage level. Typical values range from 2.2 kΩ to 10 kΩ depending on bus capacitance and rise-time requirements; 4.7 kΩ is commonly used with 3.3 V or 5 V controllers.

Can TLE4957CE6247HAMA1 operate at 2.5 V supply?

No - the absolute minimum supply voltage is 3.8 V. Below this threshold, internal regulation fails and the Hall element and comparator stages become nonfunctional. Operation at 2.5 V will result in undefined output behavior and no magnetic response.

Is the thermal pad on the SSO-3 package electrically isolated?

Yes - the exposed thermal pad is internally connected to GND and must be soldered to a PCB ground plane for both thermal performance and electrical reference stability. No isolation is required; thermal vias to inner ground layers are recommended for sustained 150 °C operation.