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Infineon Technologies TLE4254EJAXUMA2
- Part No.:
- TLE4254EJAXUMA2
- Manufacturer:
- Infineon Technologies
- Package:
- 8-SOIC (0.154", 3.90mm Width) Exposed Pad
- Datasheet:
-
TLE4254EJAXUMA2.pdf
- Description:
- IC REG LIN POS ADJ 70MA 8DSO
- Quantity:
- Payment:
- Shipping:
Inventory:4,450
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Product details
Overview
TLE4254EJAXUMA2 from Infineon is a high-accuracy, low-dropout voltage tracking regulator in PG-DSO-8 exposed pad package, delivering 70 mA output current with ±1.5% output tracking tolerance to reference, 0.2 V typical dropout at full load, and operation across -40 °C to +150 °C junction temperature-designed for sensor power supply in automotive powertrain systems.
For engineers reviewing the TLE4254EJAXUMA2 datasheet, TLE4254EJAXUMA2 pinout, TLE4254EJAXUMA2 application, or TLE4254EJAXUMA2 equivalent, key selection criteria include adjustable output down to 2.0 V, compatibility with 1 µF ceramic output capacitor, reverse polarity protection, short-circuit protection to GND/battery, and AEC-Q100 qualification for automotive use.
Technical Context
The TLE4254EJAXUMA2 implements a precision tracking architecture where the output voltage (Q) follows an external reference applied to the EN/ADJ pin with tight tolerance, enabled by an internal error amplifier comparing the reference to FB (feedback input). It supports both fixed-ratio tracking and adjustable gain via external resistor divider on FB.
It integrates saturation control, overtemperature shutdown, and status monitoring logic-though TLE4254EJAXUMA2 (EJA variant) lacks the ST open-collector status output present in EJS versions. Input voltage range spans -20 V to +45 V, supporting battery transients and reverse-battery fault conditions common in 12 V automotive systems.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Output current | 70 mA max - sufficient to power multiple automotive sensors (e.g., pressure, position, temperature) without external buffering. |
| Dropout voltage | Typ. 0.2 V @ 70 mA - enables stable regulation even during cold-crank (≥6 V battery), critical for engine control module auxiliary rails. |
| Tracking accuracy | ±1.5% - ensures precise replication of master regulator output (e.g., 5 V MCU rail) for sensor biasing requiring tight ratiometric performance. |
| Input voltage range | -20 V to +45 V - withstands load dump (up to +45 V), reverse battery (-14 V), and jump-start transients per ISO 7637-2. |
| Output capacitor | 1 µF ceramic - eliminates need for bulky electrolytics; reduces PCB area and improves long-term reliability in under-hood environments. |
| Junction temp. range | -40 °C to +150 °C - qualified for placement near engines, transmissions, and exhaust components per AEC-Q100 Grade 0. |
| Enable/reference input | EN/ADJ accepts 2.0–45 V - allows direct connection to main 5 V or 3.3 V regulator output, or resistive scaling for custom reference levels. |
Pinout & Package
Package: PG-DSO-8 exposed pad (RoHS-compliant, thermally enhanced), with exposed pad electrically connected to GND for improved thermal dissipation and EMI suppression.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 Q | Tracker output | Regulated output node; must be decoupled with ≥1 µF ceramic capacitor placed adjacent to pin to ensure stability and transient response. |
| 2, 3, 7 n.c. | No-connect | Internally unconnected; recommended to tie to GND on PCB for mechanical stability and thermal conduction via solder fill. |
| 4 FB | Feedback input | Inverting input of error amplifier; connects directly to Q for unity-gain tracking or to resistor divider for gain >1 (e.g., 8 V output from 5 V reference). |
| 5 EN/ADJ | Adjust/enable input | Reference voltage source input; high = active regulation; low = shutdown (Iq < 10 µA); also sets tracking ratio when used with FB divider. |
| 6 GND | Ground reference | Main signal and power return; must be low-impedance path to exposed pad and system ground plane to maintain accuracy and thermal performance. |
| 8 I | Input supply | Main IC supply; requires local 100 nF ceramic capacitor to suppress line noise and support transient current demands during startup. |
| Exposed pad | Thermal & electrical GND | Integral thermal path to PCB heatsink; must be soldered to ≥300 mm² copper area with ≥6 thermal vias for RthJA ≤ 47 K/W. |
Key Features
| Feature | Design Value |
|---|---|
| High-accuracy tracking | ±1.5% output tolerance to reference enables ratiometric sensor interfaces (e.g., bridge-based pressure sensors) without calibration drift compensation. |
| Ultra-low quiescent current in OFF mode | <10 µA shutdown current extends battery life in always-on vehicle modules (e.g., body control units in sleep mode). |
| Reverse polarity protection | Withstands -20 V input - eliminates need for external series diode, reducing BOM count and forward voltage drop in battery feed paths. |
| Short-circuit protection | Auto-recovery current limiting protects against sustained shorts to GND or battery - maintains functionality after fault clearance without reset. |
| Wide operating temperature | Rated to +150 °C junction - supports placement in high-ambient zones (e.g., near turbochargers or transmission control units) without derating. |
Applications
| Engine Control Unit (ECU) Sensor Bias Rail | Transmission Control Module (TCM) Reference Supply |
|---|---|
|
Use Scenario: Powers analog front-end circuits for knock, camshaft, and crankshaft position sensors in gasoline/diesel ECUs exposed to under-hood temperatures up to 125 °C ambient. IC Role / Device Role / Timing Role: Precision tracking regulator replicating main 5 V MCU rail to ensure ratiometric ADC measurements unaffected by supply variation. Use Value: ±1.5% tracking accuracy and 0.2 V dropout preserve sensor SNR and linearity across cold-crank (6.5 V min) and load-dump (40 V max) events. |
Use Scenario: Supplies reference voltage to gear position sensors and solenoid drivers in automatic transmission control units operating continuously at elevated under-hood temperatures. IC Role / Device Role / Timing Role: Low-noise, thermally robust auxiliary regulator delivering stable 3.3 V or 5 V from main 12 V battery rail with integrated fault protection. Use Value: Reverse polarity and short-circuit protection eliminate need for external protection components, reducing footprint and improving field reliability in harsh transmission environments. |
| Electric Power Steering (EPS) Motor Control Board | Advanced Driver Assistance Systems (ADAS) Camera Module |
|
Use Scenario: Provides isolated, low-noise bias for torque sensor signal conditioning and microcontroller peripherals in EPS systems subject to high EMI and vibration. IC Role / Device Role / Timing Role: Tracking LDO referenced to main MCU rail, ensuring synchronized power-up and accurate torque measurement independent of battery fluctuations. Use Value: 1 µF ceramic stability and -40 °C to +150 °C rating enable reliable operation during rapid thermal cycling and motor-induced transients. |
Use Scenario: Powers image sensor bias and ISP core logic in rear-view or surround-view camera modules mounted in exterior mirror housings or bumpers. IC Role / Device Role / Timing Role: Compact, AEC-Q100-qualified regulator supplying clean 2.8 V or 3.3 V from vehicle 12 V bus, with minimal thermal rise in sealed enclosures. Use Value: Exposed-pad PG-DSO-8 package achieves 47 K/W RthJA, preventing thermal throttling in confined camera housings during summer ambient exposure. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar automotive tracking regulator applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| TLV71733PDRVR | Fixed 3.3 V output; no tracking capability; 150 mA output; 0.3 V dropout; only -40 °C to +125 °C rated. | Lacks adjustable tracking and extended temperature range; suitable only for non-ratiometric, lower-temp subsystems. | Select only if fixed output and reduced thermal requirements suffice; not AEC-Q100 qualified. |
| MAX1725EUT+T | Fixed 3.3 V output; 150 mA; 0.25 V dropout; -40 °C to +125 °C; no reverse polarity or short-circuit-to-battery protection. | Missing critical automotive protections; requires external diode and current-limiting circuitry for equivalent fault coverage. | Use only in non-safety-critical interior modules where cost outweighs robustness; not qualified for powertrain placement. |
Compared with TLV71733PDRVR and MAX1725EUT+T, TLE4254EJAXUMA2 uniquely combines tracking accuracy, extended temperature operation, reverse-polarity immunity, and battery-short protection in a single AEC-Q100-qualified device-making it irreplaceable for ratiometric sensor supplies in engine/transmission domains.
Availability
TLE4254EJAXUMA2 is available at Aetrix Electronics and suitable for automotive powertrain control, ADAS camera modules, and electric power steering systems requiring stable component supply across extended temperature and voltage stress conditions.
Supply support for TLE4254EJAXUMA2 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 applications demanding precision tracking, wide input range, and comprehensive fault protection under extreme environmental stress.
FAQ
What is the function of the FB pin on TLE4254EJAXUMA2?
The FB (Feedback) pin is the inverting input of the internal error amplifier. When connected directly to the Q output, it configures the device for unity-gain tracking. When used with a resistor divider between Q and GND, it enables output voltages higher than the EN/ADJ reference voltage-e.g., generating 8 V from a 5 V reference. This pin is exclusive to EJA/EJS variants and absent in GA/GS versions.
Does TLE4254EJAXUMA2 provide status indication for fault conditions?
No. TLE4254EJAXUMA2 is the EJA variant, which does not include the ST (status) open-collector output. That feature is only available on EJS and GS versions. The EJA variant relies on system-level monitoring of output voltage or downstream diagnostics rather than dedicated fault signaling.
Can TLE4254EJAXUMA2 operate with a 12 V lead-acid battery input during cold-crank?
Yes. With a minimum input voltage of 4 V (per functional range) and 0.2 V typical dropout at 70 mA, TLE4254EJAXUMA2 maintains regulation down to ~2.2 V output when supplied from a cold-crank battery as low as 6.5 V-fully compliant with ISO 16750-2 cold-cranking profiles for 12 V systems.
Is external compensation required for stability with a 1 µF ceramic output capacitor?
No. The TLE4254EJAXUMA2 is internally compensated for stability with 1 µF ceramic capacitors having ESR ≤ 5 Ω, as specified in the functional range table. No external compensation network is needed, simplifying layout and reducing bill-of-materials for automotive-grade designs.
TLE4254EJAXUMA2 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:
- 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-8-27
TLE4254EJAXUMA2 FAQ
1.How can I place an order for TLE4254EJAXUMA2 through Aetrix?
Please submit a Request for Quotation (RFQ) for TLE4254EJAXUMA2 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 TLE4254EJAXUMA2 reliable?
The price and inventory of TLE4254EJAXUMA2 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for TLE4254EJAXUMA2 is usually 5 days.
3.What payment methods are accepted for TLE4254EJAXUMA2?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for TLE4254EJAXUMA2 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for TLE4254EJAXUMA2?
TLE4254EJAXUMA2 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your TLE4254EJAXUMA2 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 TLE4254EJAXUMA2?
For technical support, including TLE4254EJAXUMA2 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your TLE4254EJAXUMA2 requirements.
6.How does Aetrix verify that TLE4254EJAXUMA2 is sourced from the original manufacturer or authorized distributors?
All TLE4254EJAXUMA2 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 TLE4254EJAXUMA2 meets industry standards.
7.What is the process for return or replacement of TLE4254EJAXUMA2?
All TLE4254EJAXUMA2 units undergo pre-shipment inspection (PSI). If there is an issue with TLE4254EJAXUMA2, 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 TLE4254EJAXUMA2 part is unused and in its original packaging.
Return procedure for TLE4254EJAXUMA2:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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