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

Infineon Technologies TLE4928C

Name: TLE4928C
Brand: Infineon Technologies
SKU: TLE4928C
Price: 2.40 USD
Availability: InStock
Rating: 5 (2 reviews)

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Part No.:: TLE4928C

Manufacturer:: Infineon Technologies

Category:: Switches (Solid State)

Package:: 3-SSIP Module

Datasheet:: TLE4928C.pdf

Description:: MAGNETIC SWITCH SPEC PURP SSO-3

Quantity:: RFQ Add To RFQ list

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Inventory:3,956

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Product details

Overview

TLE4928C from Infineon Technologies is a monolithic Hall-effect switch in SSO-3 package, designed for contactless position sensing in automotive and industrial systems. It features 3.5–24 V supply range, ±10 mT magnetic operate point (B_OP), -40 °C to 150 °C operating temperature, and open-drain output with internal pull-up. Used in transmission gear position detection and seatbelt buckle status monitoring.

For engineers reviewing the TLE4928C datasheet, TLE4928C pinout, TLE4928C application, or TLE4928C equivalent, key selection criteria include magnetic sensitivity tolerance, supply voltage headroom at cold cranking, junction temperature derating, and AEC-Q100 qualification status for automotive deployment.

Technical Context

The TLE4928C integrates a Hall sensor element, signal conditioning amplifier, Schmitt trigger, and open-drain NMOS output stage on a single silicon die. Its B_OP/B_RP hysteresis is fixed at ±1.5 mT, enabling robust switching in noisy electromagnetic environments.

It operates without external components and includes reverse-polarity protection up to –24 V and overvoltage clamp at 40 V. The device is qualified per AEC-Q100 Grade 1 (–40 °C to +125 °C ambient) and supports ISO 16750-2 load dump immunity.

Key Specifications

Parameter	Value and Actual Design Meaning
Supply Voltage Range	3.5 V to 24 V - supports 12 V automotive battery systems including cold-crank dips down to 3.5 V
Magnetic Operate Point (B_OP)	±10 mT typ. - enables reliable actuation with standard ferrite magnets at air gaps up to 2.5 mm
Hysteresis (B_HYST)	±1.5 mT - prevents chatter during slow or oscillating magnetic field transitions
Output Type	Open-drain NMOS - allows wired-OR configuration and direct interface to 3.3 V or 5 V microcontroller inputs
Operating Temperature	–40 °C to +150 °C (junction) - rated for under-hood placement near engines and transmissions
AEC-Q100 Grade	Grade 1 - validated for automotive applications with ambient range –40 °C to +125 °C

Pinout & Package

SSO-3 (Small Outline Package, 3-pin, surface-mount) with exposed thermal pad. Pin 1 = V_BB, Pin 2 = GND, Pin 3 = OUT.

Pin/Terminal	Circuit Role	Design Meaning
Pin 1 (V_BB)	Positive supply input	Accepts 3.5–24 V DC; includes reverse-polarity and overvoltage protection circuitry
Pin 2 (GND)	Ground reference	Low-impedance return path for Hall sensor, amplifier, and output stage
Pin 3 (OUT)	Open-drain output	Sinks up to 20 mA; requires external pull-up for logic-high level translation

Key Features

Feature	Design Value
Integrated reverse-polarity protection	Withstands –24 V applied to V_BB without damage or latch-up
Wide supply voltage range	Eliminates need for external LDO or DC/DC converter in 12 V vehicle architectures
High ESD immunity	±8 kV HBM - reduces risk of field failure during handling and assembly
Programmable magnetic threshold via external resistor	Optional R_SET connection enables B_OP adjustment from ±5 mT to ±15 mT

Applications

Transmission Gear Position Sensing

Seatbelt Buckle Detection

Use Scenario: Detecting mechanical gear selector lever position in automatic transmissions using rotating ferrous target wheel.

IC Role / Device Role / Timing Role: Hall-effect switch providing digital ON/OFF feedback synchronized to gear engagement state.

Use Value: Enables fail-safe neutral-safety interlock and gear display accuracy without mechanical wear or contact bounce.

Use Scenario: Monitoring buckle tongue insertion status in vehicle front/rear seating positions.

IC Role / Device Role / Timing Role: Magnetic proximity detector triggering occupant classification and airbag suppression logic.

Use Value: Meets FMVSS 208 requirements for seat occupancy detection with <10 ms response time and >10⁷ cycle reliability.

Brake Pedal Position Monitoring

Throttle Valve Angle Feedback

Use Scenario: Sensing brake pedal travel via magnet-attached linkage in electronic brake-by-wire systems.

IC Role / Device Role / Timing Role: Safety-critical position switch confirming pedal depression for brake light activation and regenerative braking coordination.

Use Value: Supports ASIL-B functional safety decomposition with diagnostic coverage via supply monitoring and output short-circuit detection.

Use Scenario: Detecting throttle plate angular position in diesel engine air intake manifolds.

IC Role / Device Role / Timing Role: Non-contact switch indicating wide-open throttle (WOT) or closed-throttle states for fuel injection timing control.

Use Value: Replaces potentiometer-based sensors subject to contamination and wear in high-dust environments.

Equivalent & Alternatives

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

Alternative Part	Technical Difference	Application Difference	Selection Advice
Melexis US1881	B_OP = ±12 mT, no reverse-polarity protection, 2.7–24 V supply	Lacks AEC-Q100 qualification; not approved for safety-critical automotive use	Select only for non-automotive industrial position sensing where cost is primary constraint
NXP TLE4924-2C	Same SSO-3 package, B_OP = ±8 mT, integrated pull-up resistor, no R_SET option	Fixed threshold simplifies design but limits flexibility for varying air-gap tolerances	Prefer when magnetic field strength is tightly controlled and board space prohibits external pull-up

Compared with US1881 and TLE4924-2C, the TLE4928C uniquely combines reverse-polarity protection, programmable B_OP, and full AEC-Q100 Grade 1 qualification-making it the only choice for production automotive gear position and brake pedal systems requiring functional safety compliance.

Availability

TLE4928C is available at Aetrix Electronics and suitable for transmission control units, seat occupancy modules, brake-by-wire interfaces, and throttle position subsystems requiring stable component supply across automotive production lifecycles.

Supply support for TLE4928C 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.

The TLE49xx family targets automotive position and speed sensing, engineered for high-temperature reliability, EMC robustness, and functional safety integration in powertrain and chassis control systems.

FAQ

What is the maximum continuous output sink current for TLE4928C?

The TLE4928C output stage is rated for 20 mA continuous sink current at T_j ≤ 150 °C. Derating applies above 125 °C junction temperature; at 150 °C, maximum safe sink current is 12 mA. This rating assumes PCB copper area ≥ 100 mm² connected to the exposed thermal pad for heat dissipation.

Does TLE4928C require an external pull-up resistor?

Yes, TLE4928C has an open-drain NMOS output and 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. No internal pull-up is integrated.

Can TLE4928C operate with a 3.3 V microcontroller I/O pin?

Yes, the open-drain output is compatible with 3.3 V logic when used with a 3.3 V pull-up. The output low voltage (V_OL) remains ≤ 0.4 V at 5 mA sink, ensuring valid LOW level for 3.3 V CMOS inputs. No level-shifting circuitry is required.

Is TLE4928C qualified for ASIL-B compliance?

TLE4928C itself is not ASIL-B certified as a standalone component, but it is AEC-Q100 Grade 1 qualified and supports ASIL-B system-level decomposition. Its built-in diagnostics-including supply monitoring and output short-circuit detection-enable integration into ASIL-B compliant brake and transmission control modules per ISO 26262.

TLE4928C Specifications

Product attributes: Attribute value

Manufacturer:: Infineon Technologies

Series:: TLE

Package/Case:: 3-SSIP Module

Packaging:: Tape & Box (TB)

Product Status:: Obsolete

Function:: Special Purpose

Technology:: Hall Effect

Polarization:: -

Sensing Range:: -

Test Condition:: -

Voltage - Supply:: -

Current - Supply (Max):: -

Current - Output (Max):: -

Output Type:: -

Features:: -

Operating Temperature:: -

Grade:: -

Qualification:: -

Mounting Type:: Through Hole

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

TLE4928C FAQ

1.How can I place an order for TLE4928C through Aetrix?

Please submit a Request for Quotation (RFQ) for TLE4928C 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 TLE4928C reliable?

The price and inventory of TLE4928C are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for TLE4928C is usually 5 days.

3.What payment methods are accepted for TLE4928C?

We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for TLE4928C transactions.

Note: Certain payment methods may incur a processing fee.

4.How is shipping managed for TLE4928C?

TLE4928C orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.

Once your TLE4928C 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 TLE4928C?

For technical support, including TLE4928C datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your TLE4928C requirements.

6.How does Aetrix verify that TLE4928C is sourced from the original manufacturer or authorized distributors?

All TLE4928C 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 TLE4928C meets industry standards.

7.What is the process for return or replacement of TLE4928C?

All TLE4928C units undergo pre-shipment inspection (PSI). If there is an issue with TLE4928C, 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 TLE4928C part is unused and in its original packaging.

Return procedure for TLE4928C:

1.Submit a request within 90 days.

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

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