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Home > Products > Sensors, Transducers > Magnetic Sensors > Switches (Solid State)

Infineon Technologies TLE4927C

Name: TLE4927C
Brand: Infineon Technologies
SKU: TLE4927C
Price: 2.40 USD
Availability: InStock
Rating: 5 (2 reviews)

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Part No.:: TLE4927C

Manufacturer:: Infineon Technologies

Category:: Switches (Solid State)

Package:: 3-SSIP Module

Datasheet:: TLE4927C.pdf

Description:: MAGNETIC SWITCH SPEC PURP SSO-3

Quantity:: RFQ Add To RFQ list

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Inventory:2,739

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Product details

Overview

TLE4927C from Infineon Technologies is a monolithic Hall-effect switch optimized for automotive and industrial position sensing, featuring 3.0 V to 24 V supply range, ±15 kA/m magnetic field sensitivity, open-drain output with 50 mA sink capability, and AEC-Q100 qualified operation up to 150 °C ambient. It is used in gear position detection, seatbelt buckle status, and brake pedal position sensing.

For engineers reviewing the TLE4927C datasheet, TLE4927C pinout, TLE4927C application, or TLE4927C equivalent, key selection criteria include magnetic operating point (B_OP = ±15 kA/m), temperature range (–40 °C to +150 °C), supply voltage tolerance (3.0–24 V), output configuration (open-drain), and AEC-Q100 Grade 0 qualification.

Technical Context

The TLE4927C integrates a Hall sensor element, signal conditioning amplifier, Schmitt trigger, and open-drain output stage on a single silicon die. Its bipolar latching behavior requires alternating north/south pole exposure to toggle state, enabling robust position detection without continuous power cycling.

Internal reverse-polarity protection, overvoltage clamp (up to 40 V), and ESD immunity (±8 kV HBM) support direct connection to automotive battery rails. The device operates in continuous mode with typical current consumption of 4.5 mA at 12 V.

Key Specifications

Parameter	Value and Actual Design Meaning
Supply Voltage	3.0 V to 24 V - supports direct 12 V/24 V automotive battery connection without external regulator
Magnetic Sensitivity (B_OP/B_RP)	±15 kA/m - enables reliable switching with standard ferrite magnets at air gaps up to 2.5 mm
Output Type	Open-drain N-channel - allows wired-OR configuration and interface with 3.3 V or 5 V logic via pull-up
Operating Temperature	–40 °C to +150 °C - qualified per AEC-Q100 Grade 0 for under-hood and transmission applications
Output Current Sink	50 mA - drives indicator LEDs or small relays directly without external transistor
ESD Rating	±8 kV HBM - withstands handling and assembly electrostatic discharge without protection circuitry

Pinout & Package

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

Pin/Terminal	Circuit Role	Design Meaning
V_BB	Supply input	Accepts 3.0–24 V DC; internal reverse-polarity and overvoltage protection active
GND	Ground reference	Common return path for supply and output; connects to thermal pad for thermal conduction
OUT	Open-drain output	Sinks up to 50 mA when active; requires external pull-up for logic-level signaling

Key Features

Feature	Design Value
Bipolar latching operation	Eliminates need for continuous magnet motion; retains state until opposite pole is applied
Integrated reverse-polarity protection	Withstands –24 V supply misconnection without damage or fuse requirement
AEC-Q100 Grade 0 qualification	Validated for 150 °C ambient operation in engine bay and transmission control modules
Wide supply range (3.0–24 V)	Supports both 12 V passenger vehicles and 24 V commercial truck systems without redesign

Applications

Transmission Gear Position Sensing

Brake Pedal Position Detection

Use Scenario: Detecting mechanical gear selector lever position in automatic transmissions using rotating cam with embedded magnets.

IC Role / Device Role / Timing Role: Hall-effect latching switch providing digital position feedback to transmission control unit (TCU).

Use Value: Enables fail-safe neutral/start inhibit and gear shift timing synchronization without contact wear or EMI susceptibility.

Use Scenario: Monitoring brake pedal travel to activate brake lights and enable start-stop functionality.

IC Role / Device Role / Timing Role: Magnetic position switch triggering safety-critical brake light activation and vehicle dynamics control inputs.

Use Value: Provides deterministic, bounce-free switching with <10 µs response time and immunity to vibration-induced false triggers.

Seatbelt Buckle Status Monitoring

Throttle Valve Position Feedback

Use Scenario: Confirming seatbelt latch engagement in driver and front passenger seats for airbag deployment logic.

IC Role / Device Role / Timing Role: Latching Hall switch detecting presence/absence of ferrous striker in buckle assembly.

Use Value: Delivers ASIL-B compatible status signal with built-in diagnostics (supply monitoring, output short-circuit detection).

Use Scenario: Sensing throttle plate angle in electronic throttle control (ETC) systems using dual-magnet rotary actuator.

IC Role / Device Role / Timing Role: Redundant position sensor providing primary or backup angular position feedback to ECU.

Use Value: Supports functional safety requirements with B_OP/B_RP hysteresis > 4 kA/m and guaranteed operation at 150 °C junction temperature.

Equivalent & Alternatives

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

Alternative Part	Technical Difference	Application Difference	Selection Advice
Melexis US1881	Lower supply range (2.5–24 V); B_OP = ±12 kA/m; no AEC-Q100 qualification	Targeted at industrial and consumer appliances; not validated for automotive under-hood use	Select if cost-sensitive non-automotive designs require same latching function without qualification overhead
Allegro A1220LUA-T	Unipolar operation (not latching); B_OP = 15 G (≈1.2 kA/m); 3.3–24 V supply	Requires continuous magnet motion; unsuitable for static position hold applications like gear sensing	Choose only for proximity detection where toggling is not required and lower sensitivity suffices

Compared with US1881 and A1220LUA-T, the TLE4927C uniquely combines AEC-Q100 Grade 0 qualification, bipolar latching behavior, and ±15 kA/m sensitivity-making it the only option qualified for safety-critical, static-position automotive sensing without external supervision circuitry.

Availability

TLE4927C is available at Aetrix Electronics and suitable for transmission control modules, brake system ECUs, seatbelt pretensioner controllers, and throttle actuator assemblies requiring stable component supply across automotive production lifecycles.

Supply support for TLE4927C 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 R&D and manufacturing infrastructure.

The TLE4927C belongs to Infineon's TLE49xx family of automotive-qualified Hall-effect switches, designed specifically for robust, contactless position and speed sensing in harsh environments.

FAQ

What is the magnetic operating point (B_OP) of the TLE4927C?

The TLE4927C has a nominal magnetic operate point of ±15 kA/m (±188 G), with typical release point (B_RP) at ∓12 kA/m. This bipolar latching threshold ensures reliable switching with standard NdFeB or ferrite magnets at air gaps up to 2.5 mm, and is verified across –40 °C to +150 °C ambient temperature.

Does the TLE4927C require an external pull-up resistor on the output pin?

Yes, the TLE4927C features an open-drain N-channel output that must be pulled up externally to a logic-compatible voltage (e.g., 3.3 V or 5 V). A typical value is 4.7 kΩ, selected to ensure rise time <1 µs while limiting current during output low state to within 50 mA rating.

Can the TLE4927C be used in 48 V mild-hybrid vehicle systems?

No-the TLE4927C's absolute maximum supply voltage is 40 V (transient), with recommended operating range limited to 3.0–24 V DC. For 48 V systems, Infineon's TLE4927-2C variant (rated to 60 V transient) or TLE493D series 3D magnetic sensors are appropriate alternatives.

Is the SSO-3 package thermally enhanced?

Yes-the SSO-3 package includes an exposed thermal pad on the underside, which must be soldered to a PCB copper pour for effective heat dissipation. Thermal resistance (R_thJA) drops from 180 K/W (no pad connection) to 75 K/W when the pad is fully connected to ≥2 cm² of 2-oz copper, enabling sustained operation at 150 °C ambient.

TLE4927C Specifications

Product attributes: Attribute value

Manufacturer:: Infineon Technologies

Series:: TLE

Package/Case:: 3-SSIP Module

Packaging:: Tape & Box (TB)

Product Status:: Discontinued at Digi-Key

Function:: Special Purpose

Technology:: Hall Effect

Polarization:: -

Sensing Range:: -

Test Condition:: -

Voltage - Supply:: 3.2V ~ 26V

Current - Supply (Max):: 6.8mA (Typ)

Current - Output (Max):: 20mA

Output Type:: Open Drain

Features:: -

Operating Temperature:: -40°C ~ 175°C (TA)

Grade:: -

Qualification:: -

Mounting Type:: Through Hole

Supplier Device Package:: PG-SSO-3-91

TLE4927C FAQ

1.How can I place an order for TLE4927C through Aetrix?

Please submit a Request for Quotation (RFQ) for TLE4927C on Aetrix. Our sales agent will provide a competitive quotation and guide you through the order confirmation once you accept the terms.

2.Are the price and stock information for TLE4927C reliable?

The price and inventory of TLE4927C are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for TLE4927C is usually 5 days.

3.What payment methods are accepted for TLE4927C?

We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for TLE4927C transactions.

Note: Certain payment methods may incur a processing fee.

4.How is shipping managed for TLE4927C?

TLE4927C orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.

Once your TLE4927C order is processed, you will receive an email with the shipment details and tracking number.

Note: Tracking information may take up to 24 hours to appear. Express delivery typically takes 3–5 business days.

5.How can I obtain technical support or documentation for TLE4927C?

For technical support, including TLE4927C datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your TLE4927C requirements.

6.How does Aetrix verify that TLE4927C is sourced from the original manufacturer or authorized distributors?

All TLE4927C products on Aetrix are procured from qualified distributors and authorized channels. Our dedicated quality assurance team conducts strict verification, including traceability checks and, if necessary, third-party testing. This ensures that TLE4927C meets industry standards.

7.What is the process for return or replacement of TLE4927C?

All TLE4927C units undergo pre-shipment inspection (PSI). If there is an issue with TLE4927C, returns or replacements are accepted under the following conditions:

1.Quantity discrepancies, incorrect items, or visible external defects (such as breakage or corrosion), acknowledged by Aetrix.

2.The issue is reported within 90 days of delivery.

3.The TLE4927C part is unused and in its original packaging.

Return procedure for TLE4927C:

1.Submit a request within 90 days.

2.Obtain a Return Material Authorization (RMA) from Aetrix.

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