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Infineon Technologies TLE4276SVNKSA1
- Part No.:
- TLE4276SVNKSA1
- Manufacturer:
- Infineon Technologies
- Package:
- TO-220-5
- Datasheet:
-
TLE4276SVNKSA1.pdf
- Description:
- IC REG LIN POS ADJ 400MA TO220-5
- Quantity:
- Payment:
- Shipping:
Inventory:4,839
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Product details
Overview
TLE4276SVNKSA1 from Infineon Technologies is a monolithic adjustable positive linear voltage regulator delivering up to 400 mA output current in a TO-220-5 package, featuring thermal shutdown, current limiting, and reverse polarity protection; used in automotive body control modules for stable 5 V or 3.3 V supply generation from 5.5–40 V battery rails.
For engineers reviewing the TLE4276SVNKSA1 datasheet, TLE4276SVNKSA1 pinout, TLE4276SVNKSA1 application, or TLE4276SVNKSA1 equivalent, key selection criteria include adjustable output voltage range (1.25–28 V), dropout voltage at 400 mA (typ. 1.3 V @ 125 °C), integrated enable control, and AEC-Q100 Grade 1 qualification for under-hood use.
Technical Context
This regulator employs a bandgap reference and error amplifier driving an NPN pass transistor with external feedback resistors to set output voltage. It integrates a dedicated EN pin for system-level power sequencing and supports operation down to 5.5 V input while maintaining regulation up to 40 V transient surges.
Thermal foldback activates below −40 °C ambient to limit junction temperature rise, and short-circuit protection operates in hiccup mode with automatic recovery. The device meets ISO 7637-2 pulse 5a (load dump) immunity up to 40 V without external clamping.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Output Current | 400 mA max continuous - supports microcontroller, CAN transceiver, and sensor ICs in single-rail domains |
| Adjustable Output Range | 1.25 V to 28 V - enables flexible rail generation (e.g., 3.3 V, 5 V, 12 V) via two-resistor divider |
| Dropout Voltage | 1.3 V typ. @ 400 mA, 125 °C - allows operation with low headroom from 12 V battery during cranking |
| Input Voltage Range | 5.5 V to 40 V - covers cold-crank (5.5 V), nominal (13.5 V), and load-dump (40 V) conditions |
| Quiescent Current | 200 µA typ. @ no load - minimizes standby power loss in always-on vehicle networks |
| AEC-Q100 Grade | Grade 1 (−40 °C to +125 °C) - qualified for engine compartment and front-end electronics mounting |
Pinout & Package
Delivered in a TO-220-5 (SMD variant: PG-TO220-5-1) thermally enhanced through-hole package with exposed tab connected to GND for improved heat dissipation and EMI shielding.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 (IN) | Input Supply | Primary unregulated input connection; accepts 5.5–40 V with transient tolerance |
| 2 (GND) | Ground Reference | Power and signal ground; tied to exposed tab for thermal conduction and noise reduction |
| 3 (ADJ) | Feedback Input | Connects to resistor divider midpoint; sets output voltage via VREF = 1.25 V |
| 4 (EN) | Enable Control | Active-high logic input; pulls internal pass transistor gate low when < 0.8 V to disable output |
| 5 (OUT) | Regulated Output | Delivers adjustable regulated voltage; requires ≥10 µF ceramic output capacitor for stability |
Key Features
| Feature | Design Value |
|---|---|
| Integrated Enable Pin | Enables precise power sequencing in multi-rail systems without external logic or MOSFETs |
| Reverse Polarity Protection | Withstands −16 V input without damage - eliminates need for external series diode in battery-reversal-prone environments |
| Thermal Foldback | Reduces output current below −40 °C to prevent thermal runaway during extreme cold-start conditions |
| Hiccup-Mode Short-Circuit Protection | Auto-recovers after fault clearance - avoids latch-up and enables robust fault handling in wiring harness faults |
Applications
| Body Control Module (BCM) | Door Module Unit |
|---|---|
Use Scenario: Centralized power management for interior lighting, window lift, mirror adjustment, and door lock actuators. IC Role / Device Role / Timing Role: Primary 5 V/3.3 V regulator supplying MCU, LIN transceivers, and Hall-effect sensors. Use Value: Enables single-supply design with AEC-Q100 compliance and load-dump resilience across 12 V vehicle architectures. | Use Scenario: Local power regulation inside vehicle door assemblies exposed to moisture and vibration. IC Role / Device Role / Timing Role: Adjustable LDO providing stable 3.3 V for touch-sensing ASIC and proximity detection circuitry. Use Value: Eliminates need for external reverse-polarity diode and reduces BOM count while meeting IP67 environmental requirements. |
| Seat Control Unit | Roof Module (Sunroof/Blind) |
Use Scenario: Powering memory seat position controllers and motor driver logic in occupant-adjustable seating systems. IC Role / Device Role / Timing Role: Secondary regulator deriving 5 V from main 12 V rail to isolate MCU domain from motor switching noise. Use Value: Delivers low-noise, thermally robust supply with hiccup-mode protection against actuator stall faults. | Use Scenario: Regulating power for sunroof position sensors, rain sensor interface, and anti-pinch motor control logic. IC Role / Device Role / Timing Role: Adjustable 12 V-to-5 V conversion enabling compatibility with multiple sensor vendors' interface standards. Use Value: Supports field-programmable output via external resistors, reducing SKU proliferation across roof module variants. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar adjustable automotive LDO regulator applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| TLV1117LV33DCYR | Fixed 3.3 V output; 800 mA rating; no EN pin; not AEC-Q100 qualified | Limited to fixed-voltage use; unsuitable for load-dump or high-temp under-hood placement | Select only for non-automotive, low-power, fixed-rail designs where cost outweighs qualification needs |
| MAX1725EUT+T | Fixed 3.3 V output; 250 mA rating; includes RESET output; AEC-Q100 Grade 2 (−40 °C to +105 °C) | Lacks adjustability and full Grade 1 temp range; RESET signal adds monitoring capability | Prefer when system-level reset assertion is required and ambient temperature stays ≤105 °C |
Compared with TLV1117LV33DCYR and MAX1725EUT+T, the TLE4276SVNKSA1 uniquely combines adjustable output, 400 mA delivery, Grade 1 qualification, and integrated enable-making it the only option for thermally demanding, multi-rail automotive subsystems requiring design flexibility and robustness.
Availability
TLE4276SVNKSA1 is available at Aetrix Electronics and suitable for body control modules, door modules, seat control units, and roof modules requiring stable component supply across automotive production lifecycles.
Supply support for TLE4276SVNKSA1 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 security solutions, with global manufacturing and R&D infrastructure.
The TLE4276SVNKSA1 belongs to Infineon's TLE family of automotive-grade linear regulators, designed specifically for reliable power conditioning in harsh vehicle electrical environments including start-stop, load-dump, and reverse-battery conditions.
FAQ
What is the minimum input voltage required for regulation at 5 V output?
The TLE4276SVNKSA1 maintains regulation down to 5.5 V input. At 5 V output, this yields a 0.5 V headroom margin-sufficient for stable operation during cold-crank events where battery voltage may dip to 6.0 V, provided thermal limits are observed at full 400 mA load.
Can the ADJ pin be left unconnected or tied directly to OUT?
No. The ADJ pin must be connected to a resistor divider between OUT and GND to set output voltage. Leaving it open causes unregulated high output; tying it directly to OUT forces output to 1.25 V. Correct configuration uses R1 from OUT to ADJ and R2 from ADJ to GND per VOUT = 1.25 × (1 + R1/R2).
Does the EN pin require a pull-up resistor for default-enable operation?
No internal pull-up exists. To enable by default, connect EN directly to IN. For controlled enable/disable, drive EN with a logic signal referenced to GND; voltage >2.0 V enables regulation, <0.8 V disables it. A 10 kΩ pull-up to IN ensures safe default-on behavior if control signal floats.
Is an external capacitor required on the OUT pin, and what type is recommended?
Yes-a minimum 10 µF low-ESR ceramic capacitor is required between OUT and GND for stability and transient response. X7R or X5R dielectrics rated ≥16 V are recommended. Aluminum polymer or tantalum capacitors may be used if ESR is 10–100 mΩ, but ceramic is preferred for reliability and temperature stability.
TLE4276SVNKSA1 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Infineon Technologies
- Series:
- OPTIREG™
- Package/Case:
- TO-220-5
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Obsolete
- Output Configuration:
- Positive
- Output Type:
- Adjustable
- Number of Regulators:
- 1
- Voltage - Input (Max):
- 40V
- Voltage - Output (Min/Fixed):
- 2.5V
- Voltage - Output (Max):
- 20V
- Voltage Dropout (Max):
- 0.5V @ 250mA
- Current - Output:
- 400mA
- Current - Quiescent (Iq):
- 200 µA
- Current - Supply (Max):
- 25 mA
- PSRR:
- 54dB (100Hz)
- Control Features:
- Inhibit
- Protection Features:
- Over Current, Over Temperature, Reverse Polarity, Short Circuit
- Operating Temperature:
- -40°C ~ 150°C
- Grade:
- Automotive
- Qualification:
- AEC-Q100
- Mounting Type:
- Through Hole
- Supplier Device Package:
- P-TO220-5-43
TLE4276SVNKSA1 FAQ
1.How can I place an order for TLE4276SVNKSA1 through Aetrix?
Please submit a Request for Quotation (RFQ) for TLE4276SVNKSA1 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 TLE4276SVNKSA1 reliable?
The price and inventory of TLE4276SVNKSA1 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for TLE4276SVNKSA1 is usually 5 days.
3.What payment methods are accepted for TLE4276SVNKSA1?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for TLE4276SVNKSA1 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for TLE4276SVNKSA1?
TLE4276SVNKSA1 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your TLE4276SVNKSA1 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 TLE4276SVNKSA1?
For technical support, including TLE4276SVNKSA1 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your TLE4276SVNKSA1 requirements.
6.How does Aetrix verify that TLE4276SVNKSA1 is sourced from the original manufacturer or authorized distributors?
All TLE4276SVNKSA1 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 TLE4276SVNKSA1 meets industry standards.
7.What is the process for return or replacement of TLE4276SVNKSA1?
All TLE4276SVNKSA1 units undergo pre-shipment inspection (PSI). If there is an issue with TLE4276SVNKSA1, 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 TLE4276SVNKSA1 part is unused and in its original packaging.
Return procedure for TLE4276SVNKSA1:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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