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Infineon Technologies TLE4254GSXUMA4
- Part No.:
- TLE4254GSXUMA4
- Manufacturer:
- Infineon Technologies
- Package:
- 8-SOIC (0.154", 3.90mm Width)
- Datasheet:
-
TLE4254GSXUMA4.pdf
- Description:
- IC REG LINEAR POS ADJ 70MA 8DSO
- Quantity:
- Payment:
- Shipping:
Inventory:1,642
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Product details
Overview
TLE4254GSXUMA4 from Infineon Technologies is a high-accuracy, low-dropout voltage tracking regulator in PG-DSO-8 package, designed for automotive sensor supply under harsh conditions. It delivers 70 mA output current with ±1.5% output tracking tolerance to reference, 0.2 V typical dropout at full load, and operates across -40 °C to 150 °C junction temperature. Used to track main system regulators (e.g., 5 V) in powertrain sensors.
For engineers reviewing the TLE4254GSXUMA4 datasheet, TLE4254GSXUMA4 pinout, TLE4254GSXUMA4 application, or TLE4254GSXUMA4 equivalent, this page provides verified functional context, validated pin definitions, confirmed automotive-grade protection features (reverse polarity, short-circuit to GND/battery, overtemperature), and real-world design implications of its open-collector status output and adjustable tracking architecture.
Technical Context
The TLE4254GSXUMA4 implements a precision tracking topology where the output voltage Q follows an external reference applied to EN/ADJ with tight gain accuracy and minimal offset. Its internal error amplifier compares Q against the reference via feedback path-configured as direct connection (for ≤ reference) or divider (for > reference)-enabling flexible rail-to-rail tracking.
It integrates dual-protection logic: status output ST asserts low during output overvoltage or undervoltage faults, while saturation control and thermal shutdown activate independently under overload or junction temperature exceeding 150 °C. Input voltage range spans -20 V to +45 V, supporting reverse-battery immunity without external diodes.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Output current | 70 mA maximum - sufficient to power multiple automotive sensors (e.g., MAP, crankshaft position) without external boost stages. |
| Tracking tolerance | ±1.5% - ensures stable downstream analog signal conditioning when tracking a 5 V master regulator. |
| Dropout voltage | 0.2 V typ. @ 70 mA - enables operation down to 4.2 V input when tracking 4.0 V output, critical for cold-crank scenarios. |
| Input voltage range | -20 V to +45 V - supports reverse-battery protection and load-dump survival without external TVS or diodes. |
| Operating temperature | -40 °C to 150 °C junction - qualified per AEC-Q100 Grade 0, suitable for under-hood engine control modules. |
| Output capacitor | 1 µF ceramic - enables compact layout with low-ESR stability, eliminating need for bulk electrolytic capacitors. |
| Status output | Open-collector ST pin - allows wired-OR fault signaling to microcontroller GPIO with external pull-up, reducing BOM count. |
Pinout & Package
Package: PG-DSO-8 (standard variant, no exposed pad). Pin assignments and functions are validated per Infineon datasheet Rev. 1.3 for TLE4254GS version.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 Q | Tracker output | Regulated output node; must be decoupled with ≥1 µF ceramic capacitor near IC pins to ensure stability. |
| 2,3,6,7 GND | Ground reference | Four dedicated ground terminals; PCB interconnection required for low-impedance return path and thermal conduction to heatsink area. |
| 4 ST | Status output | Open-collector fault indicator; pulls low during output overvoltage/undervoltage; requires external pull-up resistor to system rail. |
| 5 EN/ADJ | Adjust/enable input | Combined reference input and enable pin; active-high logic enables regulation; voltage applied here sets tracking ratio. |
| 8 I | Input supply | Main power input; requires local ceramic decoupling to suppress line transients and improve PSRR. |
Key Features
| Feature | Design Value |
|---|---|
| Short-circuit protection | Self-resetting current limiting with foldback; survives sustained short to GND or battery without latch-off or damage. |
| Reverse-polarity immunity | Operates safely with -20 V applied to I pin; no external blocking diode needed, reducing power loss and board space. |
| Thermal shutdown | Activates at Tj ≥ 150 °C with hysteresis; resumes regulation automatically after cooldown, avoiding system lockup. |
| Status signaling | Dedicated ST pin reports real-time output health (OV/UV) to MCU, enabling predictive diagnostics and fail-safe state transitions. |
| Low quiescent current | ≤ 100 µA in OFF mode - extends battery life in always-on vehicle modules (e.g., body control units, telematics). |
Applications
| Engine Control Unit (ECU) Sensor Supply | Transmission Control Module (TCM) Interface |
|---|---|
|
Use Scenario: Powers crankshaft position and camshaft sensors in gasoline/diesel ECUs under wide input voltage swings (6–16 V) and extreme ambient temperatures. IC Role / Device Role / Timing Role: Tracking regulator maintaining precise 5 V or 3.3 V rail referenced to main ECU supply, ensuring ADC reference stability and signal integrity. Use Value: ±1.5% tracking accuracy prevents sensor offset drift; 0.2 V dropout sustains regulation during cold-crank dips to 6 V. |
Use Scenario: Supplies solenoid driver ICs and gear-position sensors in automatic transmission control units exposed to vibration and thermal cycling. IC Role / Device Role / Timing Role: Secondary regulated rail generator with fault reporting, enabling closed-loop diagnostics of actuator power paths. Use Value: ST pin signals OV/UV events to TCM MCU, triggering safe shift inhibition before hardware damage occurs. |
| Body Control Module (BCM) Lighting Driver | Advanced Driver Assistance Systems (ADAS) Camera Power |
|
Use Scenario: Provides stable bias to LED driver ICs in BCMs managing interior/exterior lighting with PWM dimming and thermal derating. IC Role / Device Role / Timing Role: Low-noise, low-dropout tracking source referenced to main BCM rail, minimizing ripple-induced flicker in high-brightness LEDs. Use Value: 1 µF ceramic stability eliminates audible noise from capacitor aging; reverse-polarity tolerance prevents field returns due to wiring errors. |
Use Scenario: Powers image sensor and ISP in rear-view or surround-view cameras mounted in hot under-hood or bumper locations. IC Role / Device Role / Timing Role: High-reliability post-regulator delivering clean 2.8 V or 1.8 V to CMOS image sensors, rejecting supply noise from infotainment domain. Use Value: AEC-Q100 qualification and 150 °C junction rating ensure uninterrupted operation at camera housing temperatures up to 105 °C ambient. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar automotive tracking regulator applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| TLV71718PDRVR | Fixed 1.8 V output, no tracking capability; 150 mA max; 0.3 V dropout; no ST pin or reverse-polarity protection. | Limited to fixed-voltage point-of-load use; unsuitable for variable-reference tracking or fault-aware systems. | Select only if output voltage is static and diagnostic signaling is handled externally. |
| MAX1725EUT+T | Fixed 3.3 V output; 150 mA; 0.25 V dropout; no status output; lacks AEC-Q100 qualification and reverse-battery rating. | Not rated for automotive under-hood environments; requires external reverse-protection diode and fault monitoring circuitry. | Acceptable only for non-safety-critical cabin electronics with controlled thermal profiles. |
Compared with TLV71718PDRVR and MAX1725EUT+T, the TLE4254GSXUMA4 uniquely combines adjustable tracking, integrated fault signaling, reverse-polarity immunity, and AEC-Q100 Grade 0 qualification-making it the sole choice for robust, self-diagnosing sensor supplies in powertrain and chassis domains.
Availability
TLE4254GSXUMA4 is available at Aetrix Electronics and suitable for engine control units, transmission control modules, and body control modules requiring stable component supply with automotive-grade reliability, long-term lifecycle support, and traceable sourcing.
Supply support for TLE4254GSXUMA4 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 industrial control solutions, with global manufacturing and quality certification aligned to ISO/TS 16949.
The TLE4254 belongs to Infineon's OPTIREG™ linear regulator product line, engineered specifically for automotive subsystems demanding high accuracy, fault resilience, and extended temperature operation without external protection components.
FAQ
What is the function of the ST pin on TLE4254GSXUMA4?
The ST (Status) pin is an open-collector output that pulls low during output overvoltage or undervoltage fault conditions. It requires an external pull-up resistor to a positive rail (e.g., 5 V or 3.3 V) and interfaces directly with MCU GPIOs for real-time fault detection without additional logic. This enables immediate system-level response such as disabling actuators or logging diagnostic trouble codes.
Can TLE4254GSXUMA4 track a reference voltage lower than 2.0 V?
No. The EN/ADJ pin has a minimum functional input voltage of 2.0 V per the datasheet's functional range (Table 4, P_4.2.5). Attempting to apply less than 2.0 V results in undefined regulation behavior and potential disablement. Output voltages below 2.0 V are not supported-even with feedback configuration-due to internal amplifier headroom limitations.
Does TLE4254GSXUMA4 require an external diode for reverse-polarity protection?
No. The device is rated for -20 V input voltage and includes integrated reverse-polarity protection circuitry. Applying -12 V or -14 V to the I pin causes no damage and maintains safe standby current draw (< 100 µA), eliminating the need for external series diodes, Schottky or otherwise, and avoiding associated forward-voltage drop and thermal losses.
How does the TLE4254GSXUMA4 handle short-circuit conditions?
Under short-circuit to GND or battery, the IC activates current-limiting with foldback characteristics, reducing output current to ~100 mA while maintaining regulation attempt. Thermal shutdown engages if junction temperature exceeds 150 °C. Once fault clears and temperature drops, regulation resumes automatically-no manual reset or power cycle required.
TLE4254GSXUMA4 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Infineon Technologies
- Series:
- OPTIREG™
- Package/Case:
- 8-SOIC (0.154", 3.90mm Width)
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Active
- Output Configuration:
- Positive
- Output Type:
- Adjustable
- Number of Regulators:
- 1
- Voltage - Input (Max):
- 45V
- Voltage - Output (Min/Fixed):
- Tracking
- Voltage - Output (Max):
- -
- Voltage Dropout (Max):
- 0.4V @ 70mA
- Current - Output:
- 70mA
- Current - Quiescent (Iq):
- 80 µA
- Current - Supply (Max):
- 15 mA
- PSRR:
- 60dB (100Hz)
- Control Features:
- Enable
- Protection Features:
- Over Temperature, Reverse Polarity, Short Circuit
- Operating Temperature:
- -40°C ~ 150°C
- Grade:
- Automotive
- Qualification:
- AEC-Q100
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- PG-DSO-8
TLE4254GSXUMA4 FAQ
1.How can I place an order for TLE4254GSXUMA4 through Aetrix?
Please submit a Request for Quotation (RFQ) for TLE4254GSXUMA4 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 TLE4254GSXUMA4 reliable?
The price and inventory of TLE4254GSXUMA4 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for TLE4254GSXUMA4 is usually 5 days.
3.What payment methods are accepted for TLE4254GSXUMA4?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for TLE4254GSXUMA4 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for TLE4254GSXUMA4?
TLE4254GSXUMA4 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your TLE4254GSXUMA4 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 TLE4254GSXUMA4?
For technical support, including TLE4254GSXUMA4 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your TLE4254GSXUMA4 requirements.
6.How does Aetrix verify that TLE4254GSXUMA4 is sourced from the original manufacturer or authorized distributors?
All TLE4254GSXUMA4 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 TLE4254GSXUMA4 meets industry standards.
7.What is the process for return or replacement of TLE4254GSXUMA4?
All TLE4254GSXUMA4 units undergo pre-shipment inspection (PSI). If there is an issue with TLE4254GSXUMA4, 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 TLE4254GSXUMA4 part is unused and in its original packaging.
Return procedure for TLE4254GSXUMA4:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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