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Infineon Technologies TLE4254GSXUMA2
- Part No.:
- TLE4254GSXUMA2
- Manufacturer:
- Infineon Technologies
- Package:
- 8-SOIC (0.154", 3.90mm Width)
- Datasheet:
-
TLE4254GSXUMA2.pdf
- Description:
- IC REG LINEAR POS ADJ 70MA 8DSO
- Quantity:
- Payment:
- Shipping:
Inventory:3,366
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Product details
Overview
TLE4254GSXUMA2 from Infineon is a high-accuracy, low-dropout voltage tracking regulator in PG-DSO-8 package, designed for automotive sensor power 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. It supports input voltages from -20 V to +45 V and includes short-circuit, reverse-polarity, and overtemperature protection.
For engineers reviewing the TLE4254GSXUMA2 datasheet, TLE4254GSXUMA2 pinout, TLE4254GSXUMA2 application, or TLE4254GSXUMA2 equivalent, key selection criteria include its status output for fault reporting, adjustable tracking architecture, ceramic capacitor stability (1 µF), wide input range, and AEC-Q100 qualification for automotive powertrain systems.
Technical Context
The TLE4254GSXUMA2 implements a precision tracking topology where the output voltage follows an external reference applied to the EN/ADJ pin with tight tolerance-no internal reference is used. Its error amplifier compares Q output against the reference via feedback path (FB pin in GA/EJA variants) or directly tracks EN/ADJ (GS/EJS variants).
This GS version features an open-collector ST pin that asserts low during output overvoltage or undervoltage faults, enabling system-level diagnostics. Protection circuitry actively limits current during GND or battery shorts and disables operation below -20 V or above +45 V input, while thermal shutdown activates at Tj ≥ 150 °C.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Output current | 70 mA maximum-sufficient to power multiple automotive sensors or small microcontrollers without external boost. |
| Tracking tolerance | ±1.5% max deviation from reference voltage-enables precise rail-to-rail tracking for analog sensor biasing. |
| Dropout voltage | 0.2 V typ. @ 70 mA-allows regulation down to VREF − 0.2 V, critical for low-voltage headroom in 5 V or 3.3 V systems. |
| Input voltage range | −20 V to +45 V-supports load-dump and reverse-battery immunity in 12 V/24 V automotive networks. |
| Operating temperature | −40 °C to +150 °C junction-qualified per AEC-Q100 Grade 0, suitable for engine bay or transmission control units. |
| Output capacitor | 1 µF ceramic minimum-enables compact, low-ESR filtering without tantalum or electrolytic components. |
| Status output | Open-collector ST pin with fault indication-provides direct interface to MCU GPIO for real-time output health monitoring. |
Pinout & Package
PG-DSO-8 package with exposed pad (thermal enhancement); 8-pin surface-mount, RoHS-compliant, lead-free finish. Pin 1 is Q (tracker output), pins 2/3/6/7 are GND, pin 4 is ST (status output), pin 5 is EN/ADJ (adjust/enable), pin 8 is I (input supply). Exposed pad must be connected to GND for thermal and electrical integrity.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 Q | Tracker output | Regulated output node; requires local 1 µF ceramic capacitor to GND for stability and transient response. |
| 2, 3, 6, 7 GND | Ground reference | Multiple ground connections reduce impedance; must be tied together on PCB and connected to heatsink area. |
| 4 ST | Status output | Open-collector fault indicator-pull-up required; low = output overvoltage/undervoltage condition detected. |
| 5 EN/ADJ | Adjust/enable input | Reference voltage input (2.0–45 V); high enables regulation, low disables IC and reduces quiescent current to <10 µA. |
| 8 I | Input supply | Main power input; requires local decoupling capacitor near pin to suppress line transients and noise. |
Key Features
| Feature | Design Value |
|---|---|
| High-accuracy tracking | ±1.5% max output deviation from reference-ensures consistent sensor excitation voltage across temperature and load. |
| Integrated fault reporting | ST pin signals output rail faults externally-eliminates need for separate voltage monitors in safety-critical subsystems. |
| Reverse polarity protection | Withstands −20 V input-prevents damage during battery misconnection in service or assembly environments. |
| Low quiescent current in OFF mode | <10 µA shutdown current-extends battery life in always-on vehicle modules like telematics or alarm controllers. |
| Thermal shutdown | Activates at Tj ≥ 150 °C-protects silicon during sustained overload or poor heatsinking without latch-up. |
Applications
| Engine Control Unit Sensor Biasing | Transmission Control Module Power |
|---|---|
|
Use Scenario: Supplying precision 5 V bias to manifold absolute pressure (MAP) and throttle position sensors in ECU. IC Role / Device Role / Timing Role: Tracking regulator replicating main 5 V rail with ±1.5% accuracy under load dump and cold cranking. Use Value: Maintains sensor linearity and ADC reference integrity despite input transients up to +45 V and −20 V. |
Use Scenario: Powering solenoid drivers and microcontroller peripherals in automatic transmission control units. IC Role / Device Role / Timing Role: Secondary LDO delivering stable 3.3 V from 5 V master regulator, with ST pin feeding fault flag to TCU MCU. Use Value: Enables real-time detection of output short-to-GND or open-load conditions before solenoid damage occurs. |
| Electric Power Steering (EPS) Interface | Body Control Module (BCM) Subsystem |
|
Use Scenario: Providing isolated 3.3 V supply to torque sensor signal conditioning circuitry in EPS rack. IC Role / Device Role / Timing Role: Low-noise tracking regulator referenced to main EPS 5 V rail, operating continuously at 125 °C ambient. Use Value: Guarantees <1.5% output drift over full temperature range, preserving torque measurement resolution. |
Use Scenario: Powering CAN transceiver and door lock actuator logic in BCM with battery backup capability. IC Role / Device Role / Timing Role: Always-on regulator with EN/ADJ controlled by BCM microcontroller; ST pin alerts on battery brownout. Use Value: Reduces standby current to <10 µA during sleep mode while retaining fast wake-up and fault visibility. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar automotive tracking regulator applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| TLV70733PDBVR | Fixed 3.3 V output; no tracking capability; 200 mA output; no ST pin; only −40 °C to +125 °C rating. | Lacks reference-following behavior and fault reporting-suitable only for non-tracking, non-safety-critical loads. | Select when fixed output and higher current suffice, and AEC-Q100 Grade 0 is not required. |
| MAX1725EUT+T | Fixed 3.3 V; 150 mA; no tracking; no ST pin; no reverse polarity protection; only −40 °C to +85 °C. | Not qualified for automotive use; lacks fault signaling and extended temperature support. | Use only in industrial or consumer applications where automotive reliability and diagnostics are unnecessary. |
Compared with TLV70733PDBVR and MAX1725EUT+T, the TLE4254GSXUMA2 uniquely combines tracking accuracy, integrated fault reporting, AEC-Q100 Grade 0 qualification, and reverse-polarity resilience-making it irreplaceable for safety-relevant sensor power in powertrain systems.
Availability
TLE4254GSXUMA2 is available at Aetrix Electronics and suitable for engine control units, transmission control modules, electric power steering systems, and body control modules requiring stable component supply under automotive-grade lifecycle and environmental stress.
Supply support for TLE4254GSXUMA2 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 AG is a German semiconductor manufacturer specializing in power management, automotive, and industrial control ICs, with global manufacturing and quality certification aligned to ISO/TS 16949.
The TLE4254 belongs to Infineon's OPTIREG™ linear family, engineered specifically for robust, high-precision voltage tracking in automotive powertrain and chassis systems where reliability under extreme voltage and thermal stress is mandatory.
FAQ
What is the function of the ST pin on TLE4254GSXUMA2?
The ST pin is an open-collector status output that pulls low when the regulated output voltage deviates outside its specified tolerance band-either due to overvoltage or undervoltage conditions. It requires an external pull-up resistor to a positive rail and interfaces directly with MCU GPIO for diagnostic logging or system shutdown initiation. This pin is exclusive to GS and EJS versions and is not present in GA/EJA variants.
Can TLE4254GSXUMA2 track a reference voltage lower than 2.0 V?
No. The EN/ADJ input has a functional tracking range of 2.0 V to 45 V per datasheet Table 4. Applying less than 2.0 V disables regulation and forces the device into shutdown mode. The minimum reference voltage is strictly enforced by internal circuitry to ensure stable error amplifier operation and output accuracy.
Does TLE4254GSXUMA2 require an external feedback resistor network?
No. Unlike traditional adjustable LDOs, the TLE4254GSXUMA2 does not use FB pin for feedback-it directly tracks the voltage applied to EN/ADJ. The GS variant has no FB pin; pin 4 is ST. Therefore, no external resistor divider is needed for basic tracking operation, though one may be used on EN/ADJ to derive a scaled reference if needed.
How is reverse polarity protection implemented in TLE4254GSXUMA2?
Reverse polarity protection is achieved through internal series MOSFET architecture and clamping diodes that block conduction when input voltage falls below −20 V. During reverse connection, the IC remains non-conductive and draws negligible current (<10 µA), preventing damage to itself or downstream circuitry. This protection is inherent and requires no external components.
TLE4254GSXUMA2 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:
- Discontinued at Digi-Key
- 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
TLE4254GSXUMA2 FAQ
1.How can I place an order for TLE4254GSXUMA2 through Aetrix?
Please submit a Request for Quotation (RFQ) for TLE4254GSXUMA2 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 TLE4254GSXUMA2 reliable?
The price and inventory of TLE4254GSXUMA2 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for TLE4254GSXUMA2 is usually 5 days.
3.What payment methods are accepted for TLE4254GSXUMA2?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for TLE4254GSXUMA2 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for TLE4254GSXUMA2?
TLE4254GSXUMA2 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your TLE4254GSXUMA2 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 TLE4254GSXUMA2?
For technical support, including TLE4254GSXUMA2 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your TLE4254GSXUMA2 requirements.
6.How does Aetrix verify that TLE4254GSXUMA2 is sourced from the original manufacturer or authorized distributors?
All TLE4254GSXUMA2 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 TLE4254GSXUMA2 meets industry standards.
7.What is the process for return or replacement of TLE4254GSXUMA2?
All TLE4254GSXUMA2 units undergo pre-shipment inspection (PSI). If there is an issue with TLE4254GSXUMA2, 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 TLE4254GSXUMA2 part is unused and in its original packaging.
Return procedure for TLE4254GSXUMA2:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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