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Infineon Technologies TLE4254GAXUMA1
- Part No.:
- TLE4254GAXUMA1
- Manufacturer:
- Infineon Technologies
- Package:
- 8-SOIC (0.154", 3.90mm Width)
- Datasheet:
-
TLE4254GAXUMA1.pdf
- Description:
- IC REG LINEAR POS ADJ 70MA 8DSO
- Quantity:
- Payment:
- Shipping:
Inventory:1,835
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Product details
Overview
TLE4254GAXUMA1 from Infineon is a monolithic high-accuracy low-dropout voltage tracking regulator in PG-DSO-8 package, designed to supply off-board automotive sensors 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 in powertrain management systems where precise voltage tracking of a main regulator (e.g., 5 V) is required.
For engineers reviewing the TLE4254GAXUMA1 datasheet, TLE4254GAXUMA1 pinout, TLE4254GAXUMA1 application, or TLE4254GAXUMA1 equivalent, key selection criteria include its adjustable output down to 2.0 V, stability with 1 µF ceramic capacitor, combined EN/ADJ input, short-circuit status indication (not present in GA version), and AEC-Q100 qualification for automotive use.
Technical Context
The TLE4254GAXUMA1 implements a precision tracking architecture where the output voltage (Q) follows an externally applied reference voltage at the EN/ADJ pin with high fidelity-typical tracking error ±1.5% over temperature and line/load variations. Its internal error amplifier compares the reference to feedback from either direct connection (for VOUT ≤ VREF) or a resistor divider on FB (for VOUT > VREF).
It integrates reverse-polarity protection on the input (VI withstands -20 V), short-circuit protection to GND and battery, overtemperature shutdown, and ultra-low OFF-mode current (<10 µA). The GA variant lacks the open-collector status output (ST), distinguishing it from GS/EJS versions.
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 tight regulation relative to reference voltage across -40 °C to 150 °C and full load range. |
| Dropout voltage | 0.2 V typ @ 70 mA - enables operation with minimal headroom, critical in 5 V or 3.3 V systems fed from higher battery rails. |
| Input voltage range | -20 V to +45 V - supports reverse-battery immunity and wide automotive transients including load dump. |
| Reference input range | 2.0 V to 45 V - allows flexible sourcing from main regulators, resistive dividers, or dedicated references. |
| Output capacitor | 1 µF ceramic - reduces BOM count and PCB area vs. electrolytic solutions; ESR ≤ 5 Ω specified. |
| Junction temperature | -40 °C to 150 °C - qualified per AEC-Q100 Grade 0, enabling placement near hot engine compartments. |
Pinout & Package
Package: PG-DSO-8 (standard exposed-pad variant not used in GA version; TLE4254GAXUMA1 uses non-exposed pad PG-DSO-8 per marking "4254GA" and pin assignment Figures 3 & 5).
| Pin | Circuit Role | Design Meaning |
|---|---|---|
| 1 | Q | Tracker output - delivers regulated voltage following EN/ADJ reference; requires local 1 µF ceramic bypass to GND. |
| 2, 3, 6, 7 | GND | Ground reference - all four pins must be interconnected on PCB and tied to heatsink area for thermal and noise performance. |
| 4 | FB | Feedback input - inverting input of internal error amplifier; connect directly to Q for VOUT ≤ VREF, or via divider for scaling up. |
| 5 | EN/ADJ | Adjust/enable input - dual-function pin: sets reference voltage level and enables IC when ≥2.0 V; <1.0 V disables device. |
| 8 | I | Input supply - connects to battery or pre-regulated rail; requires local decoupling capacitor to suppress line transients. |
Key Features
| Feature | Design Value |
|---|---|
| High-accuracy tracking | ±1.5% output tolerance to reference ensures sensor biasing and ADC reference stability in noisy automotive environments. |
| Ultra-low dropout | 0.2 V typical at 70 mA enables reliable operation even during cold-crank (battery dips to 4.5 V) while powering 3.3 V loads. |
| Reverse polarity protection | Withstands -20 V input - eliminates need for external series diode, reducing power loss and board space in battery-connected modules. |
| Short-circuit robustness | Protected against output short to GND and battery - sustains fault indefinitely without latch-off, supporting fail-safe system behavior. |
| Low quiescent current | <10 µA in OFF mode - extends battery life in always-on vehicle subsystems such as body control modules or telematics. |
Applications
| Engine Control Unit Sensor Supply | Transmission Control Module Biasing |
|---|---|
|
Use Scenario: Powering Hall-effect and pressure sensors in ECU under wide temperature (-40 °C to 150 °C) and transient-rich engine bay conditions. IC Role / Device Role / Timing Role: Precision tracking regulator replicating main 5 V rail with ±1.5% accuracy to maintain sensor signal integrity and ADC reference stability. Use Value: Eliminates need for separate LDO per sensor; single TLE4254GAXUMA1 supplies multiple sensors with guaranteed tracking performance across AEC-Q100 stress profiles. |
Use Scenario: Providing stable 3.3 V bias to solenoid drivers and microcontroller peripherals in transmission control units exposed to vibration and thermal cycling. IC Role / Device Role / Timing Role: Low-dropout linear regulator tracking a master 5 V supply, delivering clean, ripple-free voltage despite input fluctuations from alternator ripple and load dumps. Use Value: 0.2 V dropout ensures uninterrupted operation during cold-crank events; integrated short-circuit protection prevents field failures due to solenoid wiring faults. |
| Body Control Module Subsystem | Advanced Driver Assistance System Camera Interface |
|
Use Scenario: Supplying always-on logic and CAN transceivers in BCM during vehicle sleep mode, requiring ultra-low standby current. IC Role / Device Role / Timing Role: Enable-controlled linear regulator with <10 µA OFF-mode current, activated only when wake-up signals are asserted. Use Value: Reduces parasitic drain below 20 µA total subsystem level, meeting OEM requirements for multi-week parking without battery depletion. |
Use Scenario: Powering image sensor analog front-end and serializer ICs in ADAS camera modules mounted behind windshield. IC Role / Device Role / Timing Role: High-PSRR, low-noise tracking regulator supplying 2.8 V or 3.3 V rails derived from main domain controller's 5 V output. Use Value: 1 µF ceramic stability simplifies layout in space-constrained camera housings; -40 °C to 150 °C rating matches automotive ambient envelope. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar high-accuracy automotive tracking regulator applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| TLE4254GSXUMA1 | Includes open-collector ST pin for fault reporting; identical tracking accuracy, dropout, and protection features. | Required where system-level diagnostics demand real-time output overvoltage/undervoltage status signaling. | Select GS if fault visibility is mandatory; GA suffices for simpler tracking-only use cases with no status monitoring. |
| TLV71733PDRVR | Lower max current (150 mA), no reverse-polarity or short-to-battery protection, not AEC-Q100 qualified. | Suitable only for non-automotive industrial or consumer applications with benign supply conditions. | Not recommended for automotive deployment; lacks critical protections and qualification required for TLE4254GAXUMA1's target use cases. |
Compared with TLE4254GSXUMA1, the GA version trades diagnostic capability for simplified interface and lower cost; versus TLV71733PDRVR, it provides automotive-grade robustness, extended temperature operation, and integrated fault resilience absent in the generic LDO.
Availability
TLE4254GAXUMA1 is available at Aetrix Electronics and suitable for engine control units, transmission control modules, body control modules, and ADAS camera interfaces requiring stable component supply under AEC-Q100-compliant automotive conditions.
Supply support for TLE4254GAXUMA1 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, and industrial control ICs, with leadership in AEC-Q100-qualified analog products.
The TLE4254 belongs to Infineon's OPTIREG™ linear regulator family, engineered specifically for demanding automotive subsystems requiring precision voltage tracking, extreme environmental resilience, and integrated fault protection.
FAQ
What is the minimum reference voltage required at the EN/ADJ pin to enable regulation?
The TLE4254GAXUMA1 requires ≥2.0 V at the EN/ADJ pin to activate regulation. Below 1.0 V, the device enters ultra-low-current OFF mode (<10 µA). This threshold is specified across -40 °C to 150 °C and is independent of input voltage within the -20 V to +45 V range.
Can the output voltage exceed the reference voltage applied to EN/ADJ?
Yes-by connecting a resistor divider between Q and FB pins, the output can be scaled above the EN/ADJ reference voltage. The FB pin serves as the inverting input of the internal error amplifier; this configuration is explicitly supported in the GA version and detailed in Section 5 of the datasheet.
Does TLE4254GAXUMA1 provide output short-circuit protection to battery voltage?
Yes-the device includes protection against output short to battery (VBAT). When such a fault occurs, the IC limits current and maintains thermal shutdown control without damage, as confirmed in the "Protection functions" section and absolute maximum ratings table (VQ rated to -5 V to +45 V).
Is an external capacitor required on the I (input) pin, and what value is recommended?
Yes-a ceramic capacitor is recommended close to the I pin to suppress line transients. While no minimum value is specified, typical designs use 100 nF to 1 µF X7R/X5R type, placed adjacent to the IC with short, low-inductance traces, as noted in the "Pin configuration" and "Application information" sections.
TLE4254GAXUMA1 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
TLE4254GAXUMA1 FAQ
1.How can I place an order for TLE4254GAXUMA1 through Aetrix?
Please submit a Request for Quotation (RFQ) for TLE4254GAXUMA1 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 TLE4254GAXUMA1 reliable?
The price and inventory of TLE4254GAXUMA1 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for TLE4254GAXUMA1 is usually 5 days.
3.What payment methods are accepted for TLE4254GAXUMA1?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for TLE4254GAXUMA1 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for TLE4254GAXUMA1?
TLE4254GAXUMA1 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your TLE4254GAXUMA1 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 TLE4254GAXUMA1?
For technical support, including TLE4254GAXUMA1 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your TLE4254GAXUMA1 requirements.
6.How does Aetrix verify that TLE4254GAXUMA1 is sourced from the original manufacturer or authorized distributors?
All TLE4254GAXUMA1 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 TLE4254GAXUMA1 meets industry standards.
7.What is the process for return or replacement of TLE4254GAXUMA1?
All TLE4254GAXUMA1 units undergo pre-shipment inspection (PSI). If there is an issue with TLE4254GAXUMA1, 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 TLE4254GAXUMA1 part is unused and in its original packaging.
Return procedure for TLE4254GAXUMA1:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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