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Infineon Technologies TLE4276SVAKSA2
- Part No.:
- TLE4276SVAKSA2
- Manufacturer:
- Infineon Technologies
- Package:
- TO-220-5
- Datasheet:
-
TLE4276SVAKSA2.pdf
- Description:
- IC REG LIN POS ADJ 400MA TO220-5
- Quantity:
- Payment:
- Shipping:
Inventory:2,494
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Product details
Overview
TLE4276SVAKSA2 from Infineon is a 5 V fixed-output, automotive-qualified linear voltage regulator in PG-TO263-5 package, delivering up to 400 mA output current with ≤ ±4% output voltage tolerance, 250–500 mV dropout at 250 mA, and inhibit-controlled shutdown (<10 µA quiescent current). It operates from 6–40 V input and integrates short-circuit, reverse-polarity, and overtemperature protection for engine control units and body electronics.
For engineers reviewing the TLE4276SVAKSA2 datasheet, TLE4276SVAKSA2 pinout, TLE4276SVAKSA2 application, or TLE4276SVAKSA2 equivalent, this device supports AEC-Q100 qualified designs requiring stable 5 V supply under wide-input, high-temp, and fault-tolerant conditions in space-constrained automotive modules.
Technical Context
The TLE4276SVAKSA2 uses a bandgap-referenced control amplifier driving a series pass transistor with saturation control to prevent oversaturation under load. Its internal protection circuits actively monitor junction temperature and output current to disable regulation during overtemperature or short-circuit events.
It features low-noise regulation (54 dB PSRR at 100 Hz), tight line/load regulation (≤25 mV and ≤35 mV respectively), and requires only two external capacitors: ≥22 µF/ESR ≤3 Ω output capacitor and input capacitor damped with ~1 Ω series resistor for stability across -40 °C to +150 °C junction temperature range.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Output Voltage | 5.0 V ±4% - ensures compatibility with 5 V microcontrollers and CAN transceivers without external trimming |
| Max Output Current | 400 mA - sufficient to power multiple automotive sensors and logic ICs from single regulator |
| Dropout Voltage | 250–500 mV @ 250 mA - enables operation down to VI = 5.5 V, critical for cold-crank battery conditions |
| Quiescent Current (Inhibit Active) | <10 µA - meets ultra-low standby power requirements for always-on vehicle networks |
| Input Voltage Range | 6–40 V - covers full automotive battery range including load dump transients |
| Thermal Shutdown Threshold | 150 °C junction - protects against thermal runaway in sealed ECU enclosures |
| PSRR @ 100 Hz | 54 dB - suppresses alternator ripple and switching noise before sensitive analog circuitry |
Pinout & Package
PG-TO263-5 package with integrated heatsink tab connected to GND; thermally optimized for PCB mounting on 80 × 80 mm copper area (35 µm Cu, 5 µm Sn).
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 (I) | Input | Primary DC input connection; must be decoupled directly to GND with ceramic capacitor |
| 2 (INH) | Inhibit | Low-active enable/disable control; pulls IQ below 10 µA when grounded |
| 3 (GND) | Ground | Power and signal reference; connects to heatsink tab for thermal conduction |
| 4 (N.C.) | No Connect | Unused terminal; electrically isolated and must remain unconnected |
| 5 (Q) | Output | Regulated 5 V output; requires ≥22 µF/ESR ≤3 Ω capacitor to GND for loop stability |
Key Features
| Feature | Design Value |
|---|---|
| AEC-Q100 qualified | Validated for automotive Grade 1 (-40 °C to +125 °C ambient) and extended junction range (-40 °C to +150 °C) |
| Reverse polarity protection | Withstands -42 V input without damage - eliminates need for external series diode in battery-reversed scenarios |
| Short-circuit proof | Internally limits output current to 400–1100 mA and cycles into thermal shutdown to survive sustained shorts |
| Low-drop architecture | 250 mV typical dropout enables reliable 5 V output even at 5.5 V input during cold-crank |
| Heatsink-integrated package | PG-TO263-5 metal tab bonded to GND provides 4 K/W junction-to-case thermal resistance |
Applications
| Engine Control Unit (ECU) Power Supply | Body Control Module (BCM) Sensor Rail |
|---|---|
Use Scenario: Powers MCU, CAN transceiver, and analog front-end in gasoline/diesel engine management systems exposed to 12 V battery fluctuations and load dump. IC Role / Device Role / Timing Role: Primary 5 V LDO supplying core logic and communication interfaces with fault containment. Use Value: Maintains regulation during cold-crank (VI ≥ 5.5 V) and survives -42 V reverse battery connection without external protection. | Use Scenario: Supplies 5 V rail to door module sensors (window lift, mirror position, occupancy detection) in compact plastic housings with limited airflow. IC Role / Device Role / Timing Role: Local point-of-load regulator enabling independent power domain control per zone. Use Value: 400 mA capacity supports multiple sensors simultaneously; <10 µA inhibit mode extends battery life in sleep state. |
| Advanced Driver Assistance System (ADAS) Camera Module | Infotainment Head Unit Core Logic |
Use Scenario: Powers image sensor and ISP in rear-view or surround-view camera modules mounted near hot exhaust components. IC Role / Device Role / Timing Role: High-temp-stable 5 V source for timing-critical pixel data capture and serialization. Use Value: 150 °C junction rating and thermal shutdown prevent latch-up during prolonged exposure to under-hood temperatures. | Use Scenario: Supplies 5 V to microcontroller, display interface, and audio codec in dashboard head units with frequent power cycling. IC Role / Device Role / Timing Role: Always-on regulator supporting wake-on-CAN and fast boot sequences. Use Value: 54 dB PSRR suppresses alternator ripple that would otherwise cause display flicker or audio noise. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar fixed-output automotive LDO applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| NCP1117ST50T3G | Fixed 5 V output, 1 A rating, TO-220 package, no inhibit input, 1.2 V dropout min | Lacks AEC-Q100 qualification and reverse-polarity protection; suitable for non-automotive industrial use | Select only if higher current and lower cost outweigh missing automotive safety features |
| TLV73350PDBVR | 5 V fixed, 300 mA, SOT-23-5, 170 mV dropout, no thermal shutdown or reverse-polarity protection | Smaller footprint but lacks fault robustness required for under-hood deployment | Prefer for space-constrained non-critical subsystems where full automotive qualification is not mandated |
Compared with NCP1117ST50T3G and TLV73350PDBVR, the TLE4276SVAKSA2 uniquely combines AEC-Q100 qualification, reverse-polarity survival, inhibit control, and integrated thermal shutdown - making it the only choice for safety-critical, fault-tolerant 5 V regulation in engine bay and chassis modules.
Availability
TLE4276SVAKSA2 is available at Aetrix Electronics and suitable for engine control units, body control modules, ADAS camera systems, and infotainment head units requiring stable component supply with full automotive traceability and long-term lifecycle support.
Supply support for TLE4276SVAKSA2 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 quality certification to ISO/TS 16949.
The OPTIREG™ linear product line delivers robust, AEC-Q100 qualified voltage regulators designed specifically for demanding automotive environments - emphasizing fault tolerance, thermal resilience, and system-level reliability over raw efficiency.
FAQ
What is the maximum allowable input voltage for continuous operation?
The TLE4276SVAKSA2 supports continuous operation up to 40 V input voltage. Absolute maximum rating is 45 V, but sustained operation above 40 V risks exceeding thermal limits and triggering shutdown. Input must remain within 6–40 V for guaranteed regulation and AEC-Q100 compliance.
Does the INH pin require a pull-up resistor?
No pull-up resistor is required on the INH pin. The pin is internally pulled up; applying 0 V (GND) disables the regulator and reduces current consumption to <10 µA. Leaving INH floating results in enabled operation, but best practice is to tie it to VI or GND via controller GPIO for deterministic control.
Can this regulator replace the TLE4276GV50?
Yes - TLE4276SVAKSA2 is the same functional device as TLE4276GV50, sharing identical electrical characteristics, pinout, and PG-TO263-5 package. The "SVA" suffix denotes Infineon's standard automotive tape-and-reel packaging with extended temperature screening, fully compatible with GV50 in design-in and production.
Is an input capacitor mandatory, and what value is recommended?
Yes, an input capacitor is mandatory for stability and transient suppression. Infineon specifies a minimum 10 µF ceramic capacitor placed directly between I and GND pins. Adding a ~1 Ω damping resistor in series improves immunity to LC oscillation caused by board-level input inductance.
TLE4276SVAKSA2 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Infineon Technologies
- Series:
- OPTIREG™
- Package/Case:
- TO-220-5
- Packaging:
- Tube
- 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
TLE4276SVAKSA2 FAQ
1.How can I place an order for TLE4276SVAKSA2 through Aetrix?
Please submit a Request for Quotation (RFQ) for TLE4276SVAKSA2 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 TLE4276SVAKSA2 reliable?
The price and inventory of TLE4276SVAKSA2 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for TLE4276SVAKSA2 is usually 5 days.
3.What payment methods are accepted for TLE4276SVAKSA2?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for TLE4276SVAKSA2 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for TLE4276SVAKSA2?
TLE4276SVAKSA2 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your TLE4276SVAKSA2 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 TLE4276SVAKSA2?
For technical support, including TLE4276SVAKSA2 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your TLE4276SVAKSA2 requirements.
6.How does Aetrix verify that TLE4276SVAKSA2 is sourced from the original manufacturer or authorized distributors?
All TLE4276SVAKSA2 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 TLE4276SVAKSA2 meets industry standards.
7.What is the process for return or replacement of TLE4276SVAKSA2?
All TLE4276SVAKSA2 units undergo pre-shipment inspection (PSI). If there is an issue with TLE4276SVAKSA2, 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 TLE4276SVAKSA2 part is unused and in its original packaging.
Return procedure for TLE4276SVAKSA2:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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