Infineon Technologies TLE4988CXTNM28HAMA1

Overview

TLE4988CXTNM28HAMA1 from Infineon is a programmable active Hall-effect camshaft position sensor with True Power On (TPO) capability from zero speed, designed for automotive engine management. It delivers digital open-drain output, supports NdFeB magnet targets, features end-of-line programmable k-factor (25–75%), selectable hysteresis (1.4–6.8 mT), and integrated 220 nF/1.8 nF on-package decoupling capacitors.

For engineers reviewing the TLE4988CXTNM28HAMA1 datasheet, TLE4988CXTNM28HAMA1 pinout, TLE4988CXTNM28HAMA1 application, or TLE4988CXTNM28HAMA1 equivalent, key selection criteria include TPO phase accuracy at standstill, magnetic threshold programmability, temperature-compensated switching (±600 ppm/K TC), and AEC-Q100 qualification for under-hood deployment.

Technical Context

The TLE4988CXTNM28HAMA1 implements a mono-cell chopped Hall architecture with digital core processing including min/max detection, offset compensation, and hysteresis calculation. Its EEPROM stores self-calibration algorithms optimized for NdFeB camshaft targets, enabling adaptive TPO alignment and vibration-suppressed switching thresholds.

It operates across 4–24 V supply range with 6.7 mA typical supply current, supports 0–5 kHz magnetic signal frequency, and delivers <1 ms power-on time with output locked high during initialization. Output fall time is configurable (0.5–10.1 µs) depending on supply voltage and selected timing mode.

Key Specifications

Pinout & Package

Package: PG-SSO-3-52 - Surface-mount, 3-pin leadframe package with integrated 220 nF and 1.8 nF capacitors; twist-insensitive mounting (TIM) enables flexible mechanical integration.

Key Features

Applications

Equivalent & Alternatives

The following parts are listed as comparable options for similar camshaft position sensing applications.

Compared with TLE4988CXTNM28HAMA1, the XTSM28 variant offers superior thermal stability for SmCo targets but less field headroom, while the XTFM28 trades TC performance for lower material cost and tighter field tolerance-choice depends on magnet type, thermal profile, and precision requirements.

Availability

TLE4988CXTNM28HAMA1 is available at Aetrix Electronics and suitable for automotive engine control units, electric power steering systems, and industrial rotary position monitoring requiring stable component supply and AEC-Q100 compliance.

Supply support for TLE4988CXTNM28HAMA1 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 quality certification to IATF 16949.

The TLE4988C belongs to Infineon's high-end programmable Hall sensor product line, engineered specifically for demanding automotive camshaft and crankshaft position sensing where zero-speed detection, phase accuracy, and long-term reliability are critical.

FAQ

What is the purpose of the integrated 220 nF and 1.8 nF capacitors?

The 220 nF capacitor between VS and GND provides bulk supply decoupling to suppress low-frequency transients, while the 1.8 nF capacitor between VOUT and GND filters high-frequency noise on the output line. Both are embedded in the PG-SSO-3-52 leadframe, eliminating external components and enhancing EMC robustness per ISO 11452-4.

How does True Power On (TPO) function without external calibration?

TPO is enabled by factory-programmed self-calibration algorithms stored in EEPROM, which adaptively determine the initial magnetic threshold during first power-up. For NdFeB targets, it uses pre-trimmed −1200 ppm/K temperature coefficient and on-chip offset compensation to achieve stable zero-speed detection without manual setup.

Can the output fall time be adjusted, and how does it affect system timing?

Yes - output fall time is selectable via EEPROM programming: 0.5–10.1 µs (at 5 V) or 2.4–10.1 µs (at 12 V), depending on mode. This allows precise alignment of output edges with ECU sampling windows, reducing timing jitter in high-RPM engine control loops.

What is the role of the "μBreak" feature in the block diagram?

The μBreak feature detects and stores micro-break events-short-duration magnetic field interruptions caused by target imperfections or vibration. It prevents false switching by holding output state during transient anomalies, improving signal integrity in mechanically noisy camshaft environments.