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Infineon Technologies TLE4274GV85ATMA1
- Part No.:
- TLE4274GV85ATMA1
- Manufacturer:
- Infineon Technologies
- Package:
- TO-263-4, D2PAK (3 Leads + Tab), TO-263AA
- Datasheet:
-
TLE4274GV85ATMA1.pdf
- Description:
- IC REG LIN 8.5V 400MA TO263-3-1
- Quantity:
- Payment:
- Shipping:
Inventory:4,233
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Product details
Overview
TLE4274GV85ATMA1 from Infineon Technologies is a low-dropout linear voltage regulator delivering a fixed 8.5 V output with ±4% tolerance, 400 mA continuous current capability, and operation up to 40 V input. It features reverse-polarity protection, short-circuit proofing, thermal shutdown, and AEC-Q100 qualification for automotive power rail conditioning in engine control units and body electronics.
For engineers reviewing the TLE4274GV85ATMA1 datasheet, TLE4274GV85ATMA1 pinout, TLE4274GV85ATMA1 application, or TLE4274GV85ATMA1 equivalent, key selection criteria include dropout voltage (250–500 mV at 250 mA), junction-to-case thermal resistance (4 K/W), ESR-stable output capacitance requirement (≤3 Ω), and PG-TO263-3-1 package compatibility with heatsink mounting.
Technical Context
The TLE4274GV85ATMA1 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 temperature, reverse polarity, and overload conditions-disabling output during fault events without external components.
Designed for automotive 12 V and 24 V battery systems, it operates across –40 °C to +150 °C junction temperature, supports input transients up to 45 V, and maintains regulation with input voltages as low as 9.0 V for the 8.5 V version-enabling reliable start-stop and cold-crank operation.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Output Voltage | 8.5 V ±4% - stable supply for microcontroller I/O rails and sensor biasing in automotive modules |
| Max Output Current | 400 mA - sufficient for powering multiple CAN transceivers or small MCU subsystems |
| Dropout Voltage | 250–500 mV at 250 mA - enables operation during 9.0 V cold-crank input without dropout |
| Input Voltage Range | 9.0–40 V - compatible with 12 V/24 V automotive battery systems including load dump |
| Quiescent Current | 8–30 μA at 1–400 mA load - minimizes standby power loss in always-on vehicle networks |
| Thermal Resistance | RthJC = 4 K/W - allows direct heatsink attachment via exposed tab for sustained 400 mA operation |
| ESR Requirement | ≤3 Ω for ≥22 μF output capacitor - ensures stability without requiring low-ESR tantalum |
Pinout & Package
PG-TO263-3-1 (D²PAK) package with exposed thermal pad (TAB) designed for PCB-mounted heatsinking and GND connection. Pin 1: Input (I), Pin 2: Ground (GND), Pin 3: Output (Q).
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 (I) | Input voltage terminal | Connect directly to input rail with local 100 nF ceramic capacitor; handles up to 45 V transient |
| 2 (GND) | Ground reference and thermal return | Common reference for control circuitry; connects TAB for thermal conduction to heatsink |
| 3 (Q) | Regulated output terminal | Delivers 8.5 V to load; requires ≥22 μF output capacitor with ≤3 Ω ESR for stability |
| TAB | Exposed thermal pad | Must be soldered to large copper pour or heatsink; electrically connected to GND for thermal and safety compliance |
Key Features
| Feature | Design Value |
|---|---|
| AEC-Q100 qualified | Qualified for automotive Grade 1 (–40 °C to +125 °C ambient) per Rev. 1.7 datasheet |
| Reverse polarity protection | Withstands –42 V input without damage-eliminates need for external series diode |
| Short-circuit proof output | Internally limits current and cycles off during sustained overload-no external foldback required |
| Thermal shutdown | Disables output above 150 °C junction temperature; auto-recovers after cooldown |
| Green product | RoHS-compliant packaging with lead-free terminations and halogen-free molding compound |
Applications
| Engine Control Unit (ECU) Power Supply | Body Control Module (BCM) Sensor Bias |
|---|---|
Use Scenario: Regulating 12 V battery input to stable 8.5 V for MCU core logic and analog peripherals in gasoline/diesel ECUs. IC Role / Device Role / Timing Role: Primary LDO providing clean, fault-tolerant power to safety-critical microcontrollers and ADC references. Use Value: Maintains regulation down to 9.0 V input during cranking, preventing brownout resets during engine start. | Use Scenario: Powering Hall-effect position sensors and LIN transceivers in door module and lighting control units. IC Role / Device Role / Timing Role: Local point-of-load regulator delivering noise-immune 8.5 V bias independent of main 5 V rail. Use Value: Reverse-polarity and short-circuit protection eliminate need for discrete protection components, reducing BOM count. |
| Advanced Driver Assistance System (ADAS) Camera Module | Electric Power Steering (EPS) Motor Controller |
Use Scenario: Supplying image sensor analog front-end and ISP core in rear-view or surround-view camera ECUs. IC Role / Device Role / Timing Role: Low-noise, high-PSRR (60 dB @ 100 Hz) regulator stabilizing analog supply for pixel readout circuits. Use Value: 60 dB ripple rejection suppresses switching noise from adjacent DC/DC converters, preserving image SNR. | Use Scenario: Providing auxiliary 8.5 V rail for gate driver ICs and current-sense amplifiers in EPS motor control boards. IC Role / Device Role / Timing Role: Robust intermediate regulator supporting high-side/low-side driver bias under vibration and thermal stress. Use Value: 4 K/W RthJC and GND-connected TAB enable 400 mA delivery with minimal board-level heatsinking. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar low-dropout automotive voltage regulator applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| TLV73385PDBVR | 300 mA max output, 250 mV dropout at 300 mA, SOT-23-5 package, no reverse polarity protection | Limited to non-safety-critical consumer or industrial use due to missing AEC-Q100 and fault protections | Select only for space-constrained, cost-sensitive designs where automotive qualification and reverse-polarity immunity are not required |
| LM2940T-8.5/NOPB | 500 mA max output, 500 mV dropout at 500 mA, TO-220 package, no AEC-Q100 qualification | Not validated for automotive temperature cycling or humidity testing; lacks integrated thermal foldback | Acceptable for aftermarket or non-OEM automotive accessories where full AEC compliance is waived |
Compared with TLV73385PDBVR and LM2940T-8.5/NOPB, the TLE4274GV85ATMA1 uniquely combines AEC-Q100 Grade 1 qualification, reverse-polarity survival, and integrated thermal/short-circuit protection in a thermally optimized D²PAK package-making it the only choice for OEM-tier power conditioning in harsh automotive environments.
Availability
TLE4274GV85ATMA1 is available at Aetrix Electronics and suitable for engine control units, body control modules, ADAS camera systems, and electric power steering controllers requiring stable component supply across extended temperature and lifecycle requirements.
Supply support for TLE4274GV85ATMA1 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, with global manufacturing and automotive qualification infrastructure.
The TLE4274 family belongs to Infineon's automotive linear regulator product line, engineered specifically for robust, fault-tolerant power conditioning in engine, chassis, and comfort electronics under ISO 16750 and AEC-Q100 stress conditions.
FAQ
What is the minimum input voltage required for regulation at full 400 mA load?
The TLE4274GV85ATMA1 requires a minimum input voltage of 9.0 V to maintain 8.5 V output regulation at full 400 mA load, per Table 3 of Rev. 1.7 datasheet. This headroom accommodates automotive cold-crank conditions while maintaining dropout margin.
Can the exposed thermal pad (TAB) be left floating or must it be connected?
The exposed TAB must be soldered to a GND-connected copper pour or heatsink. Leaving it unconnected degrades thermal performance, risks exceeding 150 °C junction temperature, and violates safety isolation requirements-datasheet specifies TAB as GND-connected for both thermal and electrical integrity.
Does this device require an external output capacitor, and what are its critical parameters?
Yes-an output capacitor ≥22 μF with ESR ≤3 Ω is mandatory for loop stability across –40 °C to +150 °C, as confirmed in Section "Dimensioning Information on External Components." Ceramic or aluminum polymer capacitors meeting these specs are acceptable; tantalum is not required.
Is the TLE4274GV85ATMA1 pin-compatible with other TLE4274 variants like the V50 or V10 versions?
Yes-all TLE4274 variants (V50, V85, V10, DV50, GV50, GV85, GV10) share identical PG-TO263-3-1 pinout and footprint. Only the output voltage differs; no layout change is needed when upgrading or substituting within the same package family.
TLE4274GV85ATMA1 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Infineon Technologies
- Series:
- OPTIREG™
- Package/Case:
- TO-263-4, D2PAK (3 Leads + Tab), TO-263AA
- 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):
- 8.5V
- Voltage - Output (Max):
- -
- Voltage Dropout (Max):
- 0.5V @ 250mA
- 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-TO263-3-1
TLE4274GV85ATMA1 FAQ
1.How can I place an order for TLE4274GV85ATMA1 through Aetrix?
Please submit a Request for Quotation (RFQ) for TLE4274GV85ATMA1 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 TLE4274GV85ATMA1 reliable?
The price and inventory of TLE4274GV85ATMA1 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for TLE4274GV85ATMA1 is usually 5 days.
3.What payment methods are accepted for TLE4274GV85ATMA1?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for TLE4274GV85ATMA1 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for TLE4274GV85ATMA1?
TLE4274GV85ATMA1 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your TLE4274GV85ATMA1 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 TLE4274GV85ATMA1?
For technical support, including TLE4274GV85ATMA1 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your TLE4274GV85ATMA1 requirements.
6.How does Aetrix verify that TLE4274GV85ATMA1 is sourced from the original manufacturer or authorized distributors?
All TLE4274GV85ATMA1 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 TLE4274GV85ATMA1 meets industry standards.
7.What is the process for return or replacement of TLE4274GV85ATMA1?
All TLE4274GV85ATMA1 units undergo pre-shipment inspection (PSI). If there is an issue with TLE4274GV85ATMA1, 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 TLE4274GV85ATMA1 part is unused and in its original packaging.
Return procedure for TLE4274GV85ATMA1:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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