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Infineon Technologies TLE4254GSXUMA1
- Part No.:
- TLE4254GSXUMA1
- Manufacturer:
- Infineon Technologies
- Package:
- 8-SOIC (0.154", 3.90mm Width)
- Datasheet:
-
TLE4254GSXUMA1.pdf
- Description:
- IC REG LINEAR POS ADJ 70MA 8DSO
- Quantity:
- Payment:
- Shipping:
Inventory:1,815
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Product details
Overview
TLE4254GSXUMA1 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 with input voltage range of -20 V to +45 V.
For engineers reviewing the TLE4254GSXUMA1 datasheet, TLE4254GSXUMA1 pinout, TLE4254GSXUMA1 application, or TLE4254GSXUMA1 equivalent, this device is selected for precision off-board sensor regulation where reference tracking accuracy, short-circuit status indication, and AEC-Q100 qualification are critical design requirements.
Technical Context
The TLE4254GSXUMA1 implements a precision tracking architecture where the output voltage (Q) follows an externally applied reference voltage at the EN/ADJ pin with typ. ±1.5% tolerance. Its internal error amplifier compares Q against the reference via feedback path, enabling tight regulation even with varying input and load conditions.
It integrates dual protection logic: open-collector ST pin asserts low during overvoltage/undervoltage fault conditions at Q, while built-in reverse-polarity, short-to-battery/GND, and overtemperature protections operate independently of external circuitry - all validated per AEC-Q100 Grade 0.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Output current | 70 mA max - sufficient to power multiple automotive sensors (e.g., crankshaft, camshaft position sensors) without external buffering. |
| Tracking tolerance | ±1.5% - ensures output tracks reference voltage (2.0–45 V) with minimal deviation, critical for ratiometric sensor systems. |
| Dropout voltage | 0.2 V typ. @ 70 mA - enables stable regulation down to VI = VQ + 0.2 V, supporting low-headroom operation in 5 V or 3.3 V sensor rails. |
| Input voltage range | -20 V to +45 V - withstands automotive load-dump (up to +45 V) and reverse-battery (-20 V) transients without damage. |
| Operating temperature | -40 °C to +150 °C - qualified for under-hood applications including engine control modules and transmission control units. |
| Output capacitor | 1 µF ceramic - enables compact, low-ESR stability without requiring tantalum or electrolytic capacitors. |
| Status output | Open-collector ST pin - provides fault signaling to microcontroller GPIO with external pull-up; active-low on OV/UV at Q. |
Pinout & Package
Package: PG-DSO-8 (standard variant, no exposed pad), RoHS-compliant, thermally enhanced for automotive PCB mounting with GND pins on pins 2, 3, 6, 7 for low-impedance heat dissipation.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 (Q) | Tracker output | Regulated output node; must be decoupled with ≥1 µF ceramic capacitor close to IC to ensure stability and transient response. |
| 2, 3, 6, 7 (GND) | Ground reference | Four dedicated GND terminals reduce ground impedance and improve thermal conduction; interconnect on PCB and tie to heatsink area. |
| 4 (ST) | Status output | Open-collector fault indicator; sinks current when Q is outside UV/OV window; requires external pull-up to valid logic rail. |
| 5 (EN/ADJ) | Adjust/enable input | Reference voltage input (2.0–45 V); high enables regulation, low disables IC; also serves as tracking reference source. |
| 8 (I) | Input supply | Main power input; requires local bypass capacitor to suppress line noise and support transient current demands. |
Key Features
| Feature | Design Value |
|---|---|
| Reference-adjustable tracking | Output voltage precisely tracks EN/ADJ reference (2.0 V min), enabling ratiometric sensor biasing without trimming resistors. |
| Integrated fault signaling | ST pin provides real-time open-drain status flag for overvoltage/undervoltage at Q - eliminates need for external monitoring circuitry. |
| Reverse polarity protection | Withstands -20 V input without latch-up or damage - essential for battery-reversal scenarios in service/maintenance environments. |
| AEC-Q100 qualified | Qualified to Grade 0 (-40 °C to +150 °C), including ESD (4 kV HBM), thermal cycling, and lifetime reliability testing per automotive standard. |
| Low quiescent current in OFF mode | Typ. 10 µA shutdown current - preserves battery life in always-on vehicle subsystems like body control modules. |
Applications
| Engine Coolant Temperature Sensor Supply | Transmission Speed Sensor Biasing |
|---|---|
|
Use Scenario: Supplies regulated voltage to analog NTC-based coolant temperature sensors in engine management systems. IC Role / Device Role / Timing Role: Precision tracking regulator delivering stable bias voltage referenced to main ECU rail. Use Value: Maintains ±1.5% output tracking over temperature and input variation, ensuring sensor signal linearity and ADC accuracy. |
Use Scenario: Powers Hall-effect speed sensors in automatic transmission assemblies exposed to high ambient temperatures. IC Role / Device Role / Timing Role: High-temp-stable LDO with integrated short-circuit protection and fault reporting. Use Value: Enables continuous operation up to 150 °C junction temperature while ST pin alerts MCU of output faults before sensor data corruption. |
| Brake Pressure Sensor Interface | Exhaust Gas Recirculation (EGR) Valve Position Sensing |
|
Use Scenario: Provides isolated, accurate supply to piezoresistive brake pressure sensors in ABS/ESC modules. IC Role / Device Role / Timing Role: Low-noise, low-dropout tracking regulator with reverse-polarity and short-to-battery protection. Use Value: Survives load-dump events (+45 V) and reverse-battery connection (-20 V), preventing field failures during service. |
Use Scenario: Supplies potentiometric position sensors in high-vibration EGR valve actuators within exhaust manifolds. IC Role / Device Role / Timing Role: Automotive-grade tracking regulator with thermal shutdown and robust GND pin layout. Use Value: Four GND pins minimize ground bounce in noisy engine bay environments, preserving sensor signal integrity. |
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, 150 mA, no tracking capability, no ST pin, only -40 °C to +125 °C rating. | Lacks reference tracking, fault signaling, and extended temperature range - unsuitable for ratiometric or safety-critical sensor rails. | Select only for non-ratiometric, fixed-voltage, non-AEC-Q100 applications with lower thermal stress. |
| MAX1725EUK+T | Fixed 3.3 V output, 250 mA, no tracking, no ST pin, no reverse-polarity protection, AEC-Q100 not claimed. | No reference-following function or automotive qualification - limited to industrial or infotainment subsystems. | Use only where cost sensitivity outweighs functional and qualification requirements; not recommended for powertrain use. |
Compared with TLV71718PDBVR and MAX1725EUK+T, the TLE4254GSXUMA1 uniquely combines adjustable tracking, integrated fault signaling, AEC-Q100 Grade 0 qualification, and reverse-polarity survivability - making it the sole fit for demanding ratiometric sensor supply in engine/transmission control.
Availability
TLE4254GSXUMA1 is available at Aetrix Electronics and suitable for engine control units, transmission control modules, and brake system electronics requiring stable component supply under automotive environmental stress and long lifecycle commitments.
Supply support for TLE4254GSXUMA1 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 product line, engineered specifically for high-reliability automotive sensor supply - emphasizing tracking accuracy, fault resilience, and extended temperature operation.
FAQ
What is the minimum reference voltage required at the EN/ADJ pin for regulation?
The EN/ADJ pin accepts a reference voltage from 2.0 V to 45 V. Regulation begins when the applied voltage exceeds 2.0 V, and the output Q tracks this reference with ±1.5% tolerance. Below 2.0 V, the device remains disabled regardless of input voltage.
Can the ST pin drive a microcontroller GPIO directly?
Yes - the ST pin is an open-collector output rated for 7 V maximum and capable of sinking ≥2 mA. It requires an external pull-up resistor (e.g., 10 kΩ to 5 V or 3.3 V) to interface directly with standard automotive microcontroller GPIOs for fault detection.
Does TLE4254GSXUMA1 support output voltages higher than the reference voltage?
No - the GS version (including TLE4254GSXUMA1) does not support output voltages higher than the EN/ADJ reference. That functionality is exclusive to GA/EJA versions with FB pin. GS/EJS variants provide only tracking (VQ = VEN/ADJ) and status reporting.
Is an external capacitor required on the I pin?
Yes - a local ceramic bypass capacitor (≥100 nF) is required between pin 8 (I) and GND to suppress high-frequency noise and stabilize input impedance during load transients, as specified in the functional range section of the datasheet.
TLE4254GSXUMA1 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:
- Not For New Designs
- 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
TLE4254GSXUMA1 FAQ
1.How can I place an order for TLE4254GSXUMA1 through Aetrix?
Please submit a Request for Quotation (RFQ) for TLE4254GSXUMA1 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 TLE4254GSXUMA1 reliable?
The price and inventory of TLE4254GSXUMA1 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for TLE4254GSXUMA1 is usually 5 days.
3.What payment methods are accepted for TLE4254GSXUMA1?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for TLE4254GSXUMA1 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for TLE4254GSXUMA1?
TLE4254GSXUMA1 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your TLE4254GSXUMA1 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 TLE4254GSXUMA1?
For technical support, including TLE4254GSXUMA1 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your TLE4254GSXUMA1 requirements.
6.How does Aetrix verify that TLE4254GSXUMA1 is sourced from the original manufacturer or authorized distributors?
All TLE4254GSXUMA1 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 TLE4254GSXUMA1 meets industry standards.
7.What is the process for return or replacement of TLE4254GSXUMA1?
All TLE4254GSXUMA1 units undergo pre-shipment inspection (PSI). If there is an issue with TLE4254GSXUMA1, 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 TLE4254GSXUMA1 part is unused and in its original packaging.
Return procedure for TLE4254GSXUMA1:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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