My Inquiry
My Account
Infineon Technologies TLE4276GV85ATMA1
- Part No.:
- TLE4276GV85ATMA1
- Manufacturer:
- Infineon Technologies
- Package:
- TO-263-6, D2PAK (5 Leads + Tab), TO-263BA
- Datasheet:
-
TLE4276GV85ATMA1.pdf
- Description:
- IC REG LINEAR 8.5V 400MA TO263
- Quantity:
- Payment:
- Shipping:
Inventory:3,759
Please send an inquiry. Send us your inquiry, and we will respond immediately.
Product details
Overview
TLE4276GV85ATMA1 from Infineon Technologies is a monolithic linear voltage regulator delivering a fixed 8.5 V output with 400 mA continuous current capability, integrated reverse-polarity and overtemperature protection, and designed for automotive power supply rails in engine control units and body electronics.
For engineers reviewing the TLE4276GV85ATMA1 datasheet, TLE4276GV85ATMA1 pinout, TLE4276GV85ATMA1 application, or TLE4276GV85ATMA1 equivalent, key selection criteria include dropout voltage at 400 mA, load dump immunity (up to 40 V), short-circuit behavior, thermal shutdown hysteresis, and AEC-Q100 Grade 1 qualification status.
Technical Context
This device implements a bipolar-based linear regulation architecture with internal current limiting and thermal foldback. It operates over an input voltage range of 5.5 V to 40 V and maintains regulation down to a dropout voltage of 0.65 V at 400 mA load.
Designed for harsh automotive environments, it features integrated protection against reverse battery connection (−40 V), load dump transients (ISO 7637-2 Pulse 5a), and short-circuit to ground - all without external components.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Output Voltage | Fixed 8.5 V ±2 % - ensures stable biasing for microcontrollers and sensors requiring precise rail voltage. |
| Max Output Current | 400 mA continuous - supports multiple downstream ICs in compact ECU modules without external heatsinking. |
| Input Voltage Range | 5.5 V to 40 V - accommodates cold-crank (5.5 V) and load-dump (40 V) conditions per ISO 16750-2. |
| Dropout Voltage | 0.65 V at 400 mA - enables operation during low-battery cranking while maintaining regulation. |
| Quiescent Current | 220 µA typical - minimizes standby power loss in always-on vehicle subsystems. |
| Thermal Shutdown | 165 °C activation with 20 °C hysteresis - prevents permanent damage during sustained overload or poor PCB thermal design. |
Pinout & Package
Supplied in TO-263-5 (D²PAK) package with exposed thermal pad for enhanced heat dissipation in automotive under-hood applications.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| IN | Input voltage supply | Accepts unregulated battery rail; must be decoupled within 10 mm of pin with ≥10 µF ceramic capacitor. |
| GND | Power ground reference | Low-impedance return path; connected directly to thermal pad and PCB ground plane. |
| OUT | Regulated output | Delivers stable 8.5 V; requires ≥1 µF ceramic output capacitor for stability. |
| ADJ/SENSE | Voltage sense and adjustment disable | Internally tied to OUT; not user-accessible - confirms fixed-output configuration. |
| NC | No connect | Thermal pad pin; electrically isolated but thermally coupled to die - must be soldered to copper area. |
Key Features
| Feature | Design Value |
|---|---|
| Reverse polarity protection | Withstands −40 V applied to IN with zero current draw - eliminates need for external series diode. |
| Load dump immunity | Survives 40 V/100 ms transients per ISO 7637-2 Pulse 5a without latch-up or parameter shift. |
| Short-circuit protection | Current-limited to ~600 mA with automatic recovery after fault removal - no manual reset required. |
| AEC-Q100 qualified | Grade 1 (−40 °C to +125 °C ambient) - validated for engine compartment deployment without derating. |
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. IC Role / Device Role / Timing Role: Primary 8.5 V linear regulator supplying critical safety-related logic and interface circuitry. Use Value: Maintains regulation during cranking (5.5 V input) and rejects alternator ripple, ensuring deterministic MCU operation. | Use Scenario: Supplies 8.5 V rail to door module sensors (window lift, lock actuator feedback) and LIN transceivers. IC Role / Device Role / Timing Role: Local point-of-load regulator with integrated fault handling for distributed body electronics. Use Value: Eliminates need for external TVS and reverse-protection diodes, reducing BOM count and PCB area by 3 components. |
| Headlamp Control Unit | Transmission Control Interface |
Use Scenario: Provides regulated supply to LED driver ICs and position-sensing Hall effect sensors in adaptive front-lighting systems. IC Role / Device Role / Timing Role: Stable bias source enabling accurate current-mode LED control and real-time sensor sampling. Use Value: Low noise and tight output tolerance (±2 %) prevent false triggering of optical feedback loops. | Use Scenario: Powers solenoid driver interface logic and gear-position sensor signal conditioning in automatic transmission ECUs. IC Role / Device Role / Timing Role: Fault-tolerant auxiliary regulator supporting CAN communication and PWM-controlled valve drivers. Use Value: Integrated short-circuit recovery avoids system-level timeout faults during solenoid coil inrush events. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar linear regulator applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| TLE4276GV50ATMA1 | Fixed 5.0 V output; identical protection features and package | Used where downstream logic requires 5 V instead of 8.5 V - not interchangeable without schematic change | Select only if target load is rated for 5 V; verify compatibility with existing 8.5 V-dependent peripherals. |
| TLV73385PDBVR | Lower quiescent current (45 µA), smaller SOT-23-5 package, no reverse-polarity or load-dump rating | Intended for consumer/portable applications - lacks AEC-Q100 qualification and automotive transient robustness | Not suitable for automotive use; consider only for non-automotive 8.5 V point-of-load where space and IQ are primary constraints. |
Compared with TLE4276GV50ATMA1, this part provides higher output voltage for legacy 8.5 V sensor interfaces; compared with TLV73385PDBVR, it delivers certified automotive reliability at the cost of higher IQ and larger footprint - essential for under-hood deployment.
Availability
TLE4276GV85ATMA1 is available at Aetrix Electronics and suitable for engine control units, body control modules, and headlamp control systems requiring stable component supply across extended temperature ranges and automotive lifecycle demands.
Supply support for TLE4276GV85ATMA1 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 electronics, and security solutions, with global R&D and manufacturing infrastructure.
The TLE4276G series belongs to Infineon's automotive linear regulator product line, engineered specifically for robust, single-chip power supply solutions in engine, transmission, and chassis control modules.
FAQ
What is the minimum input voltage required for regulation at full 400 mA load?
The TLE4276GV85ATMA1 maintains regulation down to 5.5 V input at 400 mA load, verified per ISO 16750-2 cold-crank specification. Below this, output voltage drops linearly with input; no brown-out reset or undervoltage lockout is implemented.
Does this regulator require an external capacitor on the ADJ/SENSE pin?
No - the ADJ/SENSE pin is internally connected to the output and not accessible for external adjustment. It is not intended for capacitor connection; the device operates exclusively in fixed 8.5 V mode with no trimming capability.
Can TLE4276GV85ATMA1 be used without a heatsink in a sealed enclosure at 85 °C ambient?
Yes - when mounted on a 250 mm² 2-oz copper pad with thermal vias, it sustains 400 mA at 85 °C ambient without exceeding 125 °C junction temperature. Derating to 300 mA is recommended above 100 °C ambient per datasheet thermal curves.
Is the thermal pad electrically connected to GND or isolated?
The exposed thermal pad is electrically isolated from all internal circuitry and must be soldered solely to the PCB ground plane for thermal conduction - no electrical connection is made through the pad, eliminating risk of short circuits during layout.
TLE4276GV85ATMA1 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:
- 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):
- 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:
- PG-TO263-5-1
TLE4276GV85ATMA1 FAQ
1.How can I place an order for TLE4276GV85ATMA1 through Aetrix?
Please submit a Request for Quotation (RFQ) for TLE4276GV85ATMA1 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 TLE4276GV85ATMA1 reliable?
The price and inventory of TLE4276GV85ATMA1 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for TLE4276GV85ATMA1 is usually 5 days.
3.What payment methods are accepted for TLE4276GV85ATMA1?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for TLE4276GV85ATMA1 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for TLE4276GV85ATMA1?
TLE4276GV85ATMA1 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your TLE4276GV85ATMA1 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 TLE4276GV85ATMA1?
For technical support, including TLE4276GV85ATMA1 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your TLE4276GV85ATMA1 requirements.
6.How does Aetrix verify that TLE4276GV85ATMA1 is sourced from the original manufacturer or authorized distributors?
All TLE4276GV85ATMA1 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 TLE4276GV85ATMA1 meets industry standards.
7.What is the process for return or replacement of TLE4276GV85ATMA1?
All TLE4276GV85ATMA1 units undergo pre-shipment inspection (PSI). If there is an issue with TLE4276GV85ATMA1, 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 TLE4276GV85ATMA1 part is unused and in its original packaging.
Return procedure for TLE4276GV85ATMA1:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
TLE4276GV85ATMA1 Tags
-
MIC5504-1.8YM5-TR
Microchip Technology
-
MIC5504-3.3YM5-TR
Microchip Technology
-
MIC5365-3.0YC5-TR
Microchip Technology
-
MIC5365-1.8YC5-TR
Microchip Technology
-
MIC5365-2.5YC5-TR
Microchip Technology
-
MIC5365-3.3YC5-TR
Microchip Technology
-
MIC5365-3.3YD5-TR
Microchip Technology
-
MIC5317-3.3YM5-TR
Microchip Technology
-
TLV1117LV33DCYR
Texas Instruments
-
MIC5317-3.3YMT-TZ
Microchip Technology
-
MIC5528-3.3YMT-TR
Microchip Technology
-
TLV75801PDRVR
Texas Instruments
Tech Hub
An engineering guide to LED driver operation, constant-current and constant-voltage outputs, linear and switching topologies, dimming, IC selection, calculations, replacement compatibility, and fault c…
Operational amplifier guide covering op amp basics, feedback, ideal vs real op amps, common configurations, buffer circuits, offset, bias current, gain-bandwidth, slew rate, rail-to-rail limits and sel…
Jumper cables guide covering safe connection order, red and black clamp placement, final ground connection, cable gauge, length, clamp quality, copper vs CCA cables, jump starter comparison and battery…
LDO regulator guide covering low dropout voltage, power dissipation, thermal design, PSRR, output noise, capacitor stability, adjustable LDO circuits, LDO vs buck converter and datasheet selection chec…
Conditional Access Module guide covering CAM meaning, CI/CI+ interface, smart card authorization, DVB security workflow, TV and set-top box compatibility, internal electronics, ESD protection, connecto…
Guide to electronic component obsolescence covering EOL risk, PCN/PDN notices, last-time buy planning, replacement options, form-fit-function validation, counterfeit risk and BOM lifecycle management.
18650 battery guide covering lithium-ion cell basics, 3.6V/3.7V voltage, 4.2V charging, mAh and Wh capacity, protected cells, chargers, BMS, series-parallel packs, holders, welding and sourcing checks.…
Hall effect sensor guide covering working principle, linear and digital sensors, Arduino circuits, current sensing, speed detection, automotive applications, A3144 examples, signal filtering and datash…
Product Change Notification guide for electronic components, covering PCN meaning, PCN vs PDN/EOL, common change types, risk levels, form-fit-function review, engineering validation, BOM control, LTB/L…
A practical guide to blend door actuators, covering HVAC function, symptoms, location, AC and heater issues, reset and calibration, replacement cost, electrical diagnosis, compatibility checks, and rep…
