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Infineon Technologies TLE4254GSXUMA3
- Part No.:
- TLE4254GSXUMA3
- Manufacturer:
- Infineon Technologies
- Package:
- 8-SOIC (0.154", 3.90mm Width) Exposed Pad
- Datasheet:
-
TLE4254GSXUMA3.pdf
- Description:
- IC REG LINEAR POS ADJ 70MA DSO8
- Quantity:
- Payment:
- Shipping:
Inventory:3,005
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Product details
Overview
TLE4254GSXUMA3 from Infineon is a high-accuracy, low-dropout voltage tracking regulator in PG-DSO-8 package, delivering 70 mA output current with ±1.5% output tracking tolerance to reference voltage, 0.2 V typical dropout at full load, and operation across -40 °C to 150 °C junction temperature. It supplies off-board automotive sensors (e.g., crankshaft/camshaft position sensors) under harsh conditions including reverse polarity, battery short, and wide input range (-20 V to +45 V).
For engineers reviewing the TLE4254GSXUMA3 datasheet, TLE4254GSXUMA3 pinout, TLE4254GSXUMA3 application, or TLE4254GSXUMA3 equivalent, key selection criteria include its open-collector status output for fault indication, adjustable tracking architecture enabling output voltages ≥2.0 V, stability with 1 µF ceramic capacitor, and AEC-Q100 qualification for automotive powertrain systems.
Technical Context
The TLE4254GSXUMA3 implements a precision tracking regulator topology where the output voltage Q follows an external reference applied to EN/ADJ with high fidelity (±1.5% tracking error), supported by internal error amplifier and saturation control circuitry. Its feedback path is disabled in GS version; instead, status output ST provides open-collector fault signaling for overvoltage/undervoltage events.
It integrates reverse-polarity protection on input I, short-circuit protection to GND and battery on output Q, thermal shutdown, and ultra-low OFF-mode current (<10 µA). The combined EN/ADJ pin enables both reference injection and enable/disable control using a single node, simplifying system-level biasing in multi-rail automotive ECUs.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Output current | 70 mA max - sufficient to drive multiple automotive sensors or small logic loads without external buffering. |
| Tracking accuracy | ±1.5% - ensures precise replication of reference voltage (e.g., 5 V main rail) for sensor biasing requiring tight voltage matching. |
| Dropout voltage | 0.2 V typ. @ 70 mA - enables stable regulation even when input drops to ~5.2 V while maintaining 5 V output, critical during cold-crank conditions. |
| Input voltage range | -20 V to +45 V - supports reverse-battery immunity and transient overvoltage survival per ISO 7637-2 Pulse 1/2/5a. |
| Operating temperature | -40 °C to +150 °C - qualified for under-hood engine control module placement with full functionality across automotive thermal envelope. |
| Output capacitor | 1 µF ceramic - reduces BOM count and PCB area vs. electrolytic alternatives; ESR ≤5 Ω ensures loop stability. |
| Status output | Open-collector ST pin - allows wired-OR fault reporting to microcontroller GPIO with external pull-up; active-low indicates OV/UV condition. |
Pinout & Package
Package: PG-DSO-8 (standard variant, no exposed pad); RoHS-compliant, thermally enhanced for automotive under-hood use.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 Q | Tracker output | Regulated output terminal; must be decoupled with ≥1 µF ceramic capacitor near IC pins to ensure stability and transient response. |
| 2,3,6,7 GND | Ground reference | Four dedicated ground pins - require low-inductance PCB interconnect and connection to heatsink area for thermal and noise performance. |
| 4 ST | Status output | Open-collector fault indicator; sinks current when output is out-of-spec; requires external pull-up resistor to valid logic rail. |
| 5 EN/ADJ | Adjust/enable input | Combined reference injection and enable node; high-voltage (≥2.0 V) activates regulator; low disables it with <10 µA quiescent current. |
| 8 I | Input supply | Main power input; requires local 100 nF ceramic bypass capacitor to suppress line transients and improve PSRR. |
Key Features
| Feature | Design Value |
|---|---|
| Integrated reverse-polarity protection | Withstands -20 V input without damage or latch-up - eliminates need for external series diode in battery-connected applications. |
| Short-circuit protection (GND & battery) | Auto-recovery current limiting prevents destruction during sustained shorts - maintains system safety without fuse replacement. |
| AEC-Q100 Grade 0 qualification | Validated for 150 °C junction operation - certified for engine compartment deployment without derating or additional thermal margin. |
| Ultra-low shutdown current | <10 µA OFF-mode current - extends battery life in always-on vehicle modules such as body controllers and telematics units. |
| Wide-input tracking architecture | Tracks reference from 2.0 V up; enables flexible sourcing from diverse rails (e.g., 3.3 V MCU core, 5 V sensor bus, or 12 V battery via divider). |
Applications
| Engine Control Unit Sensor Biasing | Transmission Control Module Power Supply |
|---|---|
|
Use Scenario: Providing regulated 5 V bias to Hall-effect crankshaft position sensors in gasoline/diesel ECUs exposed to 12 V battery fluctuations and cold-crank dips. IC Role / Device Role / Timing Role: Precision tracking regulator replicating main ECU rail voltage with ±1.5% accuracy to maintain sensor signal integrity and ADC reference stability. Use Value: Eliminates need for separate LDO per sensor; withstands -20 V reverse battery and 45 V load dump transients without failure. |
Use Scenario: Supplying 3.3 V to transmission solenoid driver ICs and CAN transceivers in automatic gearbox control units operating at 150 °C ambient. IC Role / Device Role / Timing Role: Low-dropout tracking regulator deriving output from 5 V microcontroller rail, enabling accurate voltage scaling while minimizing heat dissipation. Use Value: 0.2 V dropout ensures regulation down to 3.5 V input - sustains operation during battery sag below 9 V during gear shifts. |
| Body Control Module Subsystem Regulator | Electric Power Steering (EPS) Diagnostic Interface |
|
Use Scenario: Powering LIN transceivers and door-lock actuators in BCMs where space-constrained DSO-8 footprint and thermal robustness are mandatory. IC Role / Device Role / Timing Role: Compact, protected linear regulator delivering 70 mA with integrated short-circuit and thermal shutdown for distributed subsystems. Use Value: Four GND pins and low RthJA (96 K/W) allow direct PCB heatsinking - avoids discrete thermal pads or airflow dependency. |
Use Scenario: Isolating diagnostic communication power in EPS systems where fault detection must remain active during main system reset or brownout. IC Role / Device Role / Timing Role: Status output (ST) provides real-time fault flagging to EPS MCU for immediate diagnostic logging upon output OV/UV event. Use Value: Open-collector ST pin enables direct interface to 3.3 V or 5 V MCU GPIO without level-shifting - reduces component count and latency. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar automotive tracking regulator applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| TLV71718PDBVR | Fixed 1.8 V output; no tracking capability; 150 mA output; only 5.5 V max input; no reverse-polarity or battery-short protection. | Limited to low-voltage digital subsystems (e.g., MCU I/O rails); unsuitable for sensor biasing requiring reference tracking or >12 V input. | Select only for cost-sensitive non-automotive applications with fixed 1.8 V needs and benign supply conditions. |
| MAX1725EUT+T | Fixed 3.3 V output; 150 mA; no status output; no reverse-polarity protection; -40 °C to +125 °C rating only. | Applicable in cabin electronics (e.g., infotainment USB ports) but fails AEC-Q100 Grade 0 and under-hood thermal requirements. | Use only in interior modules where junction temperature stays ≤125 °C and battery reverse connection is impossible. |
Compared with TLV71718PDBVR and MAX1725EUT+T, TLE4254GSXUMA3 uniquely combines adjustable tracking, AEC-Q100 Grade 0 qualification, reverse-battery immunity, and integrated fault signaling - making it irreplaceable for safety-critical engine/transmission sensor power domains.
Availability
TLE4254GSXUMA3 is available at Aetrix Electronics and suitable for engine control units, transmission control modules, and body control modules requiring stable component supply under automotive-grade reliability, thermal resilience, and long-term lifecycle continuity.
Supply support for TLE4254GSXUMA3 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 automotive qualification infrastructure.
The TLE4254 belongs to Infineon's OPTIREG™ linear product line, engineered specifically for high-reliability automotive power supply functions-especially sensor biasing, ECU sub-regulation, and fault-aware voltage tracking in harsh environments.
FAQ
What is the function of the ST pin on TLE4254GSXUMA3?
The ST pin is an open-collector status output that pulls low during output overvoltage or undervoltage fault conditions. It requires an external pull-up resistor to a valid logic rail (e.g., 3.3 V or 5 V) and interfaces directly with microcontroller GPIO for real-time diagnostic flagging without level-shifting components.
Can TLE4254GSXUMA3 regulate output voltage higher than the reference applied to EN/ADJ?
No - the GS version lacks FB pin functionality and only supports output voltages equal to or lower than the reference voltage applied to EN/ADJ. To achieve higher output (e.g., 8 V from 5 V reference), select TLE4254GA or TLE4254EJA versions which include a dedicated feedback input pin for voltage divider configuration.
Does TLE4254GSXUMA3 require an external capacitor on the EN/ADJ pin?
No external capacitor is required on EN/ADJ for basic operation, but a 100 nF ceramic capacitor placed close to the pin improves noise immunity and prevents false disablement during high-dV/dt transients. This is recommended in automotive environments per Infineon application note AN2019-05.
How does the thermal performance of PG-DSO-8 compare between standard and exposed-pad variants?
TLE4254GSXUMA3 uses the standard PG-DSO-8 (no exposed pad), achieving RthJA = 96 K/W on 300 mm² PCB heatsink. In contrast, the EJS variant (PG-DSO-8 exposed pad) achieves 47 K/W under JEDEC JESD51-2 conditions - a 2× improvement enabling higher continuous current in thermally constrained layouts.
TLE4254GSXUMA3 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Infineon Technologies
- Series:
- OPTIREG™
- Package/Case:
- 8-SOIC (0.154", 3.90mm Width) Exposed Pad
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Obsolete
- 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-8-27
TLE4254GSXUMA3 FAQ
1.How can I place an order for TLE4254GSXUMA3 through Aetrix?
Please submit a Request for Quotation (RFQ) for TLE4254GSXUMA3 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 TLE4254GSXUMA3 reliable?
The price and inventory of TLE4254GSXUMA3 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for TLE4254GSXUMA3 is usually 5 days.
3.What payment methods are accepted for TLE4254GSXUMA3?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for TLE4254GSXUMA3 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for TLE4254GSXUMA3?
TLE4254GSXUMA3 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your TLE4254GSXUMA3 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 TLE4254GSXUMA3?
For technical support, including TLE4254GSXUMA3 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your TLE4254GSXUMA3 requirements.
6.How does Aetrix verify that TLE4254GSXUMA3 is sourced from the original manufacturer or authorized distributors?
All TLE4254GSXUMA3 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 TLE4254GSXUMA3 meets industry standards.
7.What is the process for return or replacement of TLE4254GSXUMA3?
All TLE4254GSXUMA3 units undergo pre-shipment inspection (PSI). If there is an issue with TLE4254GSXUMA3, 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 TLE4254GSXUMA3 part is unused and in its original packaging.
Return procedure for TLE4254GSXUMA3:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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