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Infineon Technologies TLE4274GSV25HTSA1
- Part No.:
- TLE4274GSV25HTSA1
- Manufacturer:
- Infineon Technologies
- Package:
- TO-261-4, TO-261AA
- Datasheet:
-
TLE4274GSV25HTSA1.pdf
- Description:
- IC REG LIN 2.5V 400MA SOT223-4
- Quantity:
- Payment:
- Shipping:
Inventory:1,083
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Product details
Overview
TLE4274GSV25HTSA1 from Infineon Technologies is a fixed-output linear voltage regulator delivering 2.5 V ±4% at up to 400 mA, designed for automotive power supply rails. It operates from 4.7 V to 40 V input, features short-circuit and reverse-polarity protection, and is AEC-Q100 qualified for under-hood applications including engine control units and body electronics.
For engineers reviewing the TLE4274GSV25HTSA1 datasheet, TLE4274GSV25HTSA1 pinout, TLE4274GSV25HTSA1 application, or TLE4274GSV25HTSA1 equivalent, key selection criteria include its 2.5 V output tolerance, 1.0–2.0 V dropout at 300 mA, 8–30 mA quiescent current across load, thermal shutdown behavior, and SOT223-4 package thermal resistance (RthJC = 25 K/W).
Technical Context
The TLE4274GSV25HTSA1 uses a bandgap-referenced control amplifier driving a series pass transistor with saturation control to prevent oversaturation under high load. Its internal protection circuits actively monitor temperature, output current, and polarity to disable the output during fault conditions.
Stability requires an output capacitor ≥10 µF with ESR ≤2.5 Ω and an input capacitor damped by a ~1 Ω series resistor. The IC maintains regulation over junction temperatures from –40 °C to +150 °C and supports input transients up to ±42 V.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Output Voltage | 2.5 V ±4% (2.4–2.6 V), stable across 5–400 mA load and 4.7–40 V input |
| Max Output Current | 400 mA continuous; current limiting activates at ~600 mA to protect device |
| Dropout Voltage | 1.0–2.0 V at 300 mA load; defines minimum VI needed to sustain regulation |
| Quiescent Current | 8–30 mA at IQ = 400 mA; impacts system-level standby power in always-on modules |
| Thermal Resistance | RthJC = 25 K/W (SOT223-4); enables 1.5 W dissipation before thermal shutdown at Tj = 150 °C |
| PSRR | 60 dB at 100 Hz; suppresses low-frequency ripple from upstream DC/DC or alternator sources |
| Operating Temp | –40 °C to +150 °C junction; validated for under-hood placement without external heatsinking |
Pinout & Package
PG-SOT223-4 package with exposed thermal pad (pin 4) soldered to PCB copper for thermal conduction. Pin 2 and pin 4 are internally connected to GND and heatsink.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 (I) | Input | Connect directly to input rail via 100 nF ceramic capacitor; series 1 Ω resistor damps LC oscillation |
| 2, 4 (GND) | Ground / Heatsink | Internally tied; pin 4 is thermal pad-must be soldered to ≥1 cm² copper area on FR4 |
| 3 (Q) | Output | Delivers regulated 2.5 V; requires ≥10 µF output capacitor with ESR ≤2.5 Ω for stability |
Key Features
| Feature | Design Value |
|---|---|
| Reverse polarity protection | Withstands –42 V input without damage or latch-up; eliminates need for external diode |
| Short-circuit proof operation | Current-limited output sustains indefinite short to ground without failure or thermal runaway |
| AEC-Q100 qualification | Validated for automotive Grade 1 (–40 °C to +125 °C ambient) and extended temp operation |
| Green product (RoHS) | Lead-free, halogen-free, and compliant with EU Directive 2011/65/EU |
| Low quiescent current at light load | 100 µA typical at 1 mA output-critical for battery-backed systems with long sleep cycles |
Applications
| Engine Control Unit (ECU) Sensor Power | Body Control Module (BCM) Microcontroller Rail |
|---|---|
Use Scenario: Powers crankshaft/camshaft position sensors and knock sensors in gasoline/diesel ECUs. IC Role / Device Role / Timing Role: Primary 2.5 V analog reference rail for precision ADCs and signal conditioning circuitry. Use Value: Tight 4% output tolerance and <70 mV load regulation ensure sensor measurement accuracy across temperature and battery voltage variation. | Use Scenario: Supplies 2.5 V logic rail to microcontrollers and CAN transceivers in BCMs. IC Role / Device Role / Timing Role: Low-noise, fault-tolerant post-regulator after main 5 V DC/DC converter. Use Value: Reverse-polarity and short-circuit immunity eliminate field failures due to wiring errors or actuator shorts. |
| Advanced Driver Assistance Systems (ADAS) Camera Module | Electric Power Steering (EPS) Motor Control Logic |
Use Scenario: Provides clean 2.5 V supply to image sensor analog front-end and ISP core in rear-view cameras. IC Role / Device Role / Timing Role: Local LDO for noise-sensitive imaging chain; decoupled from noisy motor drive domains. Use Value: 60 dB PSRR at 100 Hz rejects alternator ripple and switching noise, preserving image SNR. | Use Scenario: Powers gate driver logic and position feedback circuitry in EPS motor control units. IC Role / Device Role / Timing Role: Safety-critical auxiliary rail supporting ASIL-B functional safety monitoring paths. Use Value: Thermal shutdown and overtemperature hysteresis prevent unsafe operation during prolonged steering assist events. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar fixed-output automotive LDO regulator applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| TLV73325PDBVR | Lower IQ (40 µA typ), lower max current (300 mA), no reverse-polarity protection | Suitable for non-automotive, space-constrained consumer modules-not AEC-Q100 rated | Select only if reverse polarity risk is eliminated externally and thermal margin allows lower current rating |
| REG1117-2.5 | Higher dropout (1.2 V min), no integrated thermal/short-circuit protection, not AEC-Q100 qualified | Legacy industrial use; lacks automotive reliability validation and fault resilience | Not recommended for new automotive designs; requires external protection circuitry |
Compared with TLV73325PDBVR and REG1117-2.5, the TLE4274GSV25HTSA1 uniquely combines AEC-Q100 qualification, reverse-polarity survival, and 400 mA output in a thermally optimized SOT223-4 package-making it the only drop-in solution for safety-critical 2.5 V rails where fault coverage and temperature robustness are mandatory.
Availability
TLE4274GSV25HTSA1 is available at Aetrix Electronics and suitable for engine control units, body control modules, ADAS camera systems, and electric power steering applications requiring stable component supply under automotive qualification and long-term lifecycle assurance.
Supply support for TLE4274GSV25HTSA1 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 global manufacturing and qualification infrastructure.
The TLE4274 family targets automotive power supply systems requiring high reliability, fault tolerance, and extended temperature operation-designed specifically for ECU, BCM, and ADAS subsystems demanding AEC-Q100 compliance.
FAQ
What is the maximum allowable input voltage for continuous operation?
The TLE4274GSV25HTSA1 supports continuous operation up to 40 V input. Absolute maximum rating is 45 V, but sustained operation above 40 V risks thermal overload or accelerated degradation. Input transients up to ±42 V are survivable per AEC-Q100 stress testing, provided duration is limited and energy is clamped externally.
Does this regulator require an external shutdown signal?
No. The TLE4274GSV25HTSA1 has no enable/shutdown pin and operates continuously when valid input voltage is applied. It incorporates autonomous thermal shutdown and current limiting-no external control signal is needed or supported for basic regulation function.
Can the SOT223-4 package be used without thermal copper pour?
No. The PG-SOT223-4 package requires pin 4 (GND/thermal pad) to be soldered to ≥1 cm² of copper on FR4 to achieve RthJA = 100 K/W. Without this, junction temperature rises rapidly under 400 mA load, triggering thermal shutdown within seconds. Thermal design must follow Infineon's layout guidelines in Data Sheet Rev. 2.3.
Is the 2.5 V output version pin-compatible with the 3.3 V variant?
Yes. TLE4274GSV25HTSA1 and TLE4274GSV33HTSA1 share identical PG-SOT223-4 pinout, thermal pad configuration, and protection architecture. Only the internal voltage reference differs-allowing direct substitution where output voltage matches system requirements, without PCB redesign.
TLE4274GSV25HTSA1 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Infineon Technologies
- Series:
- OPTIREG™
- Package/Case:
- TO-261-4, TO-261AA
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Obsolete
- Output Configuration:
- Positive
- Output Type:
- Fixed
- Number of Regulators:
- 1
- Voltage - Input (Max):
- 40V
- Voltage - Output (Min/Fixed):
- 2.5V
- Voltage - Output (Max):
- -
- Voltage Dropout (Max):
- 2V @ 300mA
- Current - Output:
- 400mA
- Current - Quiescent (Iq):
- 220 µA
- Current - Supply (Max):
- 30 mA
- PSRR:
- 60dB (100Hz)
- Control Features:
- -
- Protection Features:
- Over Current, Over Temperature, Reverse Polarity, Short Circuit
- Operating Temperature:
- -40°C ~ 150°C (TJ)
- Grade:
- Automotive
- Qualification:
- AEC-Q100
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- PG-SOT223-4
TLE4274GSV25HTSA1 FAQ
1.How can I place an order for TLE4274GSV25HTSA1 through Aetrix?
Please submit a Request for Quotation (RFQ) for TLE4274GSV25HTSA1 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 TLE4274GSV25HTSA1 reliable?
The price and inventory of TLE4274GSV25HTSA1 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for TLE4274GSV25HTSA1 is usually 5 days.
3.What payment methods are accepted for TLE4274GSV25HTSA1?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for TLE4274GSV25HTSA1 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for TLE4274GSV25HTSA1?
TLE4274GSV25HTSA1 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your TLE4274GSV25HTSA1 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 TLE4274GSV25HTSA1?
For technical support, including TLE4274GSV25HTSA1 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your TLE4274GSV25HTSA1 requirements.
6.How does Aetrix verify that TLE4274GSV25HTSA1 is sourced from the original manufacturer or authorized distributors?
All TLE4274GSV25HTSA1 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 TLE4274GSV25HTSA1 meets industry standards.
7.What is the process for return or replacement of TLE4274GSV25HTSA1?
All TLE4274GSV25HTSA1 units undergo pre-shipment inspection (PSI). If there is an issue with TLE4274GSV25HTSA1, 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 TLE4274GSV25HTSA1 part is unused and in its original packaging.
Return procedure for TLE4274GSV25HTSA1:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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