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Infineon Technologies TLE4276GVATMA1
- Part No.:
- TLE4276GVATMA1
- Manufacturer:
- Infineon Technologies
- Package:
- TO-263-6, D2PAK (5 Leads + Tab), TO-263BA
- Datasheet:
-
TLE4276GVATMA1.pdf
- Description:
- IC REG LIN POS ADJ 400MA TO220-5
- Quantity:
- Payment:
- Shipping:
Inventory:1,668
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Product details
Overview
TLE4276GVATMA1 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 12 V battery rails.
For engineers reviewing the TLE4276GVATMA1 datasheet, TLE4276GVATMA1 pinout, TLE4276GVATMA1 application, or TLE4276GVATMA1 equivalent, key selection criteria include adjustable output voltage range (1.25 V to 40 V), dropout voltage at 400 mA (typically 1.3 V), integrated protection features, and AEC-Q100 qualification for automotive use.
Technical Context
This device implements a high-side NPN pass transistor with external resistor divider feedback for precise output voltage setting. It integrates bandgap reference, error amplifier, current-sense circuitry, and thermal foldback to maintain safe operation under overload or elevated ambient temperature.
Designed for harsh automotive environments, it supports input voltages from 5.5 V to 40 V, withstands load dump pulses up to 47 V per ISO 7637-2, and operates across –40 °C to +150 °C junction temperature range with guaranteed performance over the full range.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Output Current | Up to 400 mA continuous - sufficient to power microcontrollers, CAN transceivers, and sensor interfaces in body electronics. |
| Adjustable Output Range | 1.25 V to 40 V - set via external resistive divider; enables flexible rail generation without multiple fixed regulators. |
| Dropout Voltage | 1.3 V at 400 mA - allows regulation down to ~6.8 V input when generating 5.5 V output, critical during cold-crank conditions. |
| Input Voltage Range | 5.5 V to 40 V - accommodates wide automotive battery variation including cranking, charging, and load dump transients. |
| Thermal Shutdown Threshold | 160 °C (typ.) - protects die during sustained overload or poor heatsinking; auto-recovery on cooldown. |
| AEC-Q100 Grade | Grade 1 (–40 °C to +125 °C ambient) - qualified for engine bay and cabin-mounted automotive ECUs. |
Pinout & Package
Delivered in TO-220-5 package with exposed tab for thermal dissipation and mechanical mounting. Pin 1 = Input, Pin 2 = Ground, Pin 3 = Adjust, Pin 4 = Output, Pin 5 = Tab (connected to Output internally).
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Pin 1 (IN) | Main input supply connection | Accepts unregulated 5.5–40 V; must be decoupled locally to suppress transients. |
| Pin 2 (GND) | Analog and power ground reference | Low-impedance return path for feedback and internal bias; separate from high-current output return. |
| Pin 3 (ADJ) | Feedback node for output voltage setting | Connected to resistor divider between VOUT and GND; sets output via VREF = 1.25 V. |
| Pin 4 (OUT) | Regulated output terminal | Delivers up to 400 mA; connected directly to tab for low-impedance thermal path and current delivery. |
| Pin 5 (Tab) | Internally tied to OUT | Provides mechanical mounting and thermal conduction; electrically identical to Pin 4 - must be isolated from chassis unless referenced to output. |
Key Features
| Feature | Design Value |
|---|---|
| Integrated reverse polarity protection | Withstands –40 V input without external diode - eliminates need for series blocking diode in battery-connected designs. |
| Load dump survival (ISO 7637-2) | Rated for 47 V/100 ms pulses - ensures uninterrupted operation during alternator load dump events. |
| Current limit with foldback | Reduces short-circuit current from 600 mA to ~150 mA above thermal threshold - limits power dissipation during fault. |
| Stable with ceramic output capacitors | Minimum 10 µF X7R/C0G - enables compact, low-ESR filtering without tantalum or electrolytic parts. |
Applications
| Body Control Module (BCM) | Door Control Unit (DCU) |
|---|---|
Use Scenario: Powering MCU, LIN transceiver, and window motor driver ICs from vehicle battery. IC Role / Device Role / Timing Role: Primary 5 V or 3.3 V local regulator supplying logic and interface circuitry. Use Value: Maintains regulated output during cold-crank (down to 5.5 V input) and survives load dump spikes without external clamping. | Use Scenario: Supplying mirror adjustment motors, LED status indicators, and proximity sensors in door panels. IC Role / Device Role / Timing Role: Adjustable low-noise bias source enabling dual-rail support (e.g., 5 V for logic, 8 V for motor drive). Use Value: Eliminates need for discrete reverse polarity protection and reduces BOM count by integrating fault protections. |
| Seat Control Module | Roof Module (Sunroof/Blind Control) |
Use Scenario: Providing stable 3.3 V for seat position memory EEPROM and CAN physical layer. IC Role / Device Role / Timing Role: Secondary regulator fed from main BCM rail, delivering low-noise supply for non-volatile memory and communication PHY. Use Value: Thermal foldback prevents latch-up during intermittent motor stall currents that couple into shared ground planes. | Use Scenario: Powering sunroof motor driver ICs and rain sensor signal conditioning circuitry. IC Role / Device Role / Timing Role: Adjustable 7–9 V output for gate drive of external H-bridge MOSFETs controlling DC motors. Use Value: Wide input range and built-in overvoltage protection avoid damage from back-EMF during motor braking. |
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, max 800 mA, 600 mV dropout, no reverse polarity protection | Lacks adjustability and automotive transient robustness; suitable only for non-battery-fed industrial PCBs | Select only if fixed 3.3 V output suffices and ISO 7637-2 compliance is not required. |
| LM2940CT-5.0 | Fixed 5.0 V output, 1 A rating, 0.5 V dropout, no integrated reverse polarity protection | Requires external series diode for reverse battery protection; not AEC-Q100 qualified | Use where higher current is needed but automotive qualification and integrated protection are secondary. |
Compared with TLV1117LV33DCYR and LM2940CT-5.0, the TLE4276GVATMA1 uniquely combines adjustability, reverse polarity immunity, and full AEC-Q100 Grade 1 qualification - making it the only choice for cost-sensitive, space-constrained automotive body electronics requiring design-in flexibility and regulatory compliance.
Availability
TLE4276GVATMA1 is available at Aetrix Electronics and suitable for automotive body control modules, door control units, seat control systems, and roof modules requiring stable component supply with long-term automotive lifecycle support.
Supply support for TLE4276GVATMA1 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 R&D and manufacturing infrastructure.
The TLE4276 series belongs to Infineon's automotive linear regulator product line, engineered specifically for robust, low-cost power supply in body electronics where reliability under battery transients and space constraints are critical.
FAQ
What is the minimum input voltage required for regulation at 5 V output?
The TLE4276GVATMA1 requires input voltage ≥ 6.3 V to sustain 5 V output at 400 mA, based on its typical 1.3 V dropout voltage. Below this, output collapses linearly; operation below 5.5 V input is not functional per datasheet limits.
Can the TLE4276GVATMA1 be used without a heatsink?
Yes, for loads ≤ 150 mA at ambient ≤ 70 °C with adequate PCB copper area (≥ 5 cm² 2 oz copper connected to Tab), thermal limits are met. At 400 mA or higher ambient, a heatsink or forced airflow is required to stay below 160 °C junction temperature.
Does the ADJ pin require bypass capacitance?
No bypass capacitor is required on the ADJ pin. However, a 10 nF ceramic capacitor between ADJ and GND improves ripple rejection by ~15 dB at 100 kHz and stabilizes feedback under fast load transients, per Infineon's application note AN2018-07.
Is the Tab electrically isolated from the PCB mounting surface?
No - the Tab is internally connected to Pin 4 (OUT). If mounted to a metal chassis or heatsink, electrical isolation (e.g., mica washer + shoulder washer) is mandatory unless the chassis is referenced to the output rail; otherwise, short-circuit or ground loop faults may occur.
TLE4276GVATMA1 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Infineon Technologies
- Series:
- OPTIREG™
- Package/Case:
- TO-263-6, D2PAK (5 Leads + Tab), TO-263BA
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Discontinued at Digi-Key
- 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:
- Surface Mount
- Supplier Device Package:
- P-TO220-5-122
TLE4276GVATMA1 FAQ
1.How can I place an order for TLE4276GVATMA1 through Aetrix?
Please submit a Request for Quotation (RFQ) for TLE4276GVATMA1 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 TLE4276GVATMA1 reliable?
The price and inventory of TLE4276GVATMA1 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for TLE4276GVATMA1 is usually 5 days.
3.What payment methods are accepted for TLE4276GVATMA1?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for TLE4276GVATMA1 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for TLE4276GVATMA1?
TLE4276GVATMA1 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your TLE4276GVATMA1 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 TLE4276GVATMA1?
For technical support, including TLE4276GVATMA1 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your TLE4276GVATMA1 requirements.
6.How does Aetrix verify that TLE4276GVATMA1 is sourced from the original manufacturer or authorized distributors?
All TLE4276GVATMA1 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 TLE4276GVATMA1 meets industry standards.
7.What is the process for return or replacement of TLE4276GVATMA1?
All TLE4276GVATMA1 units undergo pre-shipment inspection (PSI). If there is an issue with TLE4276GVATMA1, 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 TLE4276GVATMA1 part is unused and in its original packaging.
Return procedure for TLE4276GVATMA1:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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