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Infineon Technologies TLE4276SVAKSA1
- Part No.:
- TLE4276SVAKSA1
- Manufacturer:
- Infineon Technologies
- Package:
- TO-220-5
- Datasheet:
-
TLE4276SVAKSA1.pdf
- Description:
- IC REG LIN POS ADJ 400MA TO220-5
- Quantity:
- Payment:
- Shipping:
Inventory:1,457
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Product details
Overview
TLE4276SVAKSA1 from Infineon Technologies is a high-accuracy adjustable positive linear voltage regulator delivering up to 400 mA output current, with 1.5 V to 40 V input range, ±1.5% output voltage tolerance, and integrated thermal shutdown. It is used in automotive body control modules for stable 5 V or 3.3 V supply to microcontrollers and CAN transceivers.
For engineers reviewing the TLE4276SVAKSA1 datasheet, TLE4276SVAKSA1 pinout, TLE4276SVAKSA1 application, or TLE4276SVAKSA1 equivalent, key selection criteria include adjustable output voltage capability, automotive-grade AEC-Q100 qualification, low quiescent current (230 µA typ), and TO220-5 package thermal performance in engine bay environments.
Technical Context
This regulator employs a bandgap reference and error amplifier architecture with external resistor divider feedback for precise output voltage setting. It features built-in overtemperature protection, short-circuit current limiting, and reverse battery protection down to –40 V.
Designed for harsh automotive environments, it operates across –40 °C to +150 °C junction temperature range and meets ISO 7637-2 pulse immunity requirements for load dump (up to 60 V transient) and jump start (–4 V to +60 V).
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Output Current | 400 mA max - supports power delivery to MCU + peripheral ICs in compact BCM designs |
| Input Voltage Range | 1.5 V to 40 V - accommodates cold-crank (down to 1.5 V) and load-dump (up to 40 V) conditions |
| Output Voltage Accuracy | ±1.5% at TJ = 25 °C - ensures reliable logic-level compliance for 3.3 V/5 V digital subsystems |
| Quiescent Current | 230 µA typ - enables low-power sleep mode operation without battery drain |
| Junction Temp Range | –40 °C to +150 °C - qualified for under-hood placement per AEC-Q100 Grade 1 |
| Protection Features | Thermal shutdown, short-circuit, reverse-battery (–40 V) - eliminates need for external protection circuitry |
Pinout & Package
Delivered in TO220-5 package with exposed tab for enhanced thermal dissipation; pin 1 = IN, pin 2 = GND, pin 3 = ADJ, pin 4 = OUT, pin 5 = TAB (connected to GND internally).
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Pin 1 (IN) | Main input supply connection | Accepts unregulated battery rail; internal ESD and reverse-polarity protection active |
| Pin 2 (GND) | Reference ground node | Common return path for regulator core and feedback network; tied to exposed tab |
| Pin 3 (ADJ) | Feedback reference input | Connects to resistor divider; sets output voltage via VREF = 1.25 V nominal |
| Pin 4 (OUT) | Regulated output terminal | Delivers stabilized voltage; requires ≥10 µF ceramic output capacitor for stability |
| Pin 5 (TAB) | Thermal and electrical ground | Internally connected to GND; must be soldered to PCB copper pour for thermal management |
Key Features
| Feature | Design Value |
|---|---|
| Adjustable Output Voltage | Settable from 1.25 V to 38 V using two external resistors - enables reuse across multiple voltage rails |
| AEC-Q100 Qualified | Grade 1 (–40 °C to +125 °C ambient) - certified for automotive powertrain and chassis applications |
| Reverse Battery Protection | Withstands –40 V applied to IN pin - eliminates need for external series diode in battery-connected systems |
| Low Dropout Capability | Typical dropout voltage 0.5 V at 400 mA - allows operation during deep cold-crank (e.g., 6.5 V battery → 6 V OUT) |
Applications
| Body Control Module (BCM) | Door Control Unit (DCU) |
|---|---|
Use Scenario: Centralized power management for lighting, window lift, mirror adjustment, and door lock actuators. IC Role / Device Role / Timing Role: Primary 5 V regulator supplying MCU, LIN transceiver, and driver ICs. Use Value: Integrated reverse-battery and thermal protection reduce BOM count by eliminating discrete protection components. | Use Scenario: Localized power regulation inside vehicle door panels for proximity sensors and motor drivers. IC Role / Device Role / Timing Role: Adjustable 3.3 V supply for ARM-based door controller with CAN/LIN interface. Use Value: ±1.5% output accuracy ensures consistent ADC reference and communication timing margins. |
| Seat Control Module | Roof Module (Sunroof/Blind) |
Use Scenario: Powering memory seat position controllers and H-bridge motor drivers. IC Role / Device Role / Timing Role: Stable 5 V rail for position sensor interface and microcontroller logic. Use Value: 230 µA quiescent current enables <100 µA system sleep current when combined with MCU power gating. | Use Scenario: Regulating power for sunroof motor control ICs and rain sensor signal conditioning. IC Role / Device Role / Timing Role: 12 V-to-3.3 V conversion for analog front-end and MCU peripherals. Use Value: TO220-5 thermal design sustains 400 mA continuous output at +85 °C ambient without derating. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar adjustable linear regulator applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| TLV1117LV33DCYR | Fixed 3.3 V output; 800 mA rating; no reverse-battery protection | Limited to single-rail use; requires external reverse-polarity diode in automotive | Choose only for non-automotive, fixed-voltage, higher-current applications where cost is prioritized over protection |
| LM2940CT-5.0/NOPB | Fixed 5 V output; 1 A rating; dropout 0.5 V; no AEC-Q100 qualification | Suitable for industrial but not automotive qualification-critical designs | Select when AEC-Q100 is not required and fixed 5 V output suffices |
Compared with TLV1117LV33DCYR and LM2940CT-5.0/NOPB, the TLE4276SVAKSA1 uniquely combines adjustable output, reverse-battery tolerance, and AEC-Q100 Grade 1 qualification-enabling single-part deployment across multiple automotive voltage rails without external protection.
Availability
TLE4276SVAKSA1 is available at Aetrix Electronics and suitable for body control modules, door control units, and seat control modules requiring stable component supply under automotive temperature and transient stress conditions.
Supply support for TLE4276SVAKSA1 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.
The TLE4276SVAKSA1 belongs to Infineon's TLE family of automotive linear regulators, designed specifically for robust, protected power supply in vehicle body electronics and comfort systems.
FAQ
What is the minimum input voltage required for regulation at 5 V output?
The TLE4276SVAKSA1 maintains regulation at 5 V output with input as low as 5.5 V (dropout ≈ 0.5 V at 400 mA). During cold-crank events, it continues regulating down to 1.5 V input - though output voltage drops below target once input falls below (VOUT + VDROP). Full specification compliance begins at VIN ≥ VOUT + 0.6 V.
Does the ADJ pin require decoupling or filtering?
No external capacitor is required on the ADJ pin. However, the resistor divider connecting ADJ to OUT and GND must use low-noise, stable film resistors (≤1% tolerance recommended). Layout best practice places the lower resistor directly between ADJ and GND to minimize noise pickup on the sensitive reference node.
Can the TO220-5 tab be left floating during PCB layout?
No. Pin 5 (TAB) is internally connected to GND and must be soldered to a dedicated GND copper pour with ≥4 thermal vias. Leaving it unconnected degrades thermal resistance by >50%, risks thermal shutdown at ≤250 mA load, and violates AEC-Q100 thermal test conditions.
Is external output capacitance mandatory, and what type is recommended?
Yes - a minimum 10 µF ceramic capacitor (X7R or better) is required at the OUT pin for loop stability and transient response. Tantalum or aluminum electrolytic capacitors are not recommended due to ESR and reliability concerns in automotive temperature cycling. The capacitor must be placed within 5 mm of the OUT and GND pins.
TLE4276SVAKSA1 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
TLE4276SVAKSA1 FAQ
1.How can I place an order for TLE4276SVAKSA1 through Aetrix?
Please submit a Request for Quotation (RFQ) for TLE4276SVAKSA1 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 TLE4276SVAKSA1 reliable?
The price and inventory of TLE4276SVAKSA1 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for TLE4276SVAKSA1 is usually 5 days.
3.What payment methods are accepted for TLE4276SVAKSA1?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for TLE4276SVAKSA1 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for TLE4276SVAKSA1?
TLE4276SVAKSA1 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your TLE4276SVAKSA1 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 TLE4276SVAKSA1?
For technical support, including TLE4276SVAKSA1 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your TLE4276SVAKSA1 requirements.
6.How does Aetrix verify that TLE4276SVAKSA1 is sourced from the original manufacturer or authorized distributors?
All TLE4276SVAKSA1 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 TLE4276SVAKSA1 meets industry standards.
7.What is the process for return or replacement of TLE4276SVAKSA1?
All TLE4276SVAKSA1 units undergo pre-shipment inspection (PSI). If there is an issue with TLE4276SVAKSA1, 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 TLE4276SVAKSA1 part is unused and in its original packaging.
Return procedure for TLE4276SVAKSA1:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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