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Infineon Technologies TLE8366EVXUMA1
- Part No.:
- TLE8366EVXUMA1
- Manufacturer:
- Infineon Technologies
- Package:
- 8-SOIC (0.154", 3.90mm Width)
- Datasheet:
-
TLE8366EVXUMA1.pdf
- Description:
- IC REG BUCK ADJ 1.8A PGDSO-8
- Quantity:
- Payment:
- Shipping:
Inventory:2,385
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Product details
Overview
TLE8366EVXUMA1 from Infineon Technologies is a 1.8 A automotive-grade PWM step-down DC/DC voltage regulator in PG-DSO-8 package with exposed pad, delivering fixed 5.0 V output (±2% tolerance), operating from 4.75 V to 45 V input, featuring 370 kHz switching frequency, synchronization input, and integrated power DMOS transistor. It serves as primary power supply for engine control units, body control modules, and ADAS sensors under harsh thermal conditions (Tj = −40 °C to +150 °C).
For engineers reviewing the TLE8366EVXUMA1 datasheet, TLE8366EVXUMA1 pinout, TLE8366EVXUMA1 application, or TLE8366EVXUMA1 equivalent, key selection considerations include input voltage range compliance, soft-start behavior, feedback configuration for fixed-output variants, thermal resistance (RthJA = 52 K/W), and AEC-Q100 qualification status for automotive deployment.
Technical Context
The TLE8366EVXUMA1 implements voltage-mode PWM regulation with feed-forward control to achieve fast line transient rejection across 8–36 V input range. Its oscillator supports external synchronization (200–530 kHz) and integrates a soft-start ramp generator that limits inrush current during startup.
Safety architecture includes cycle-by-cycle current limiting, over-temperature shutdown (trip at 175 °C), input undervoltage lockout, and bootstrap capacitor under-voltage detection. The internal charge pump enables robust gate drive during low-VIN/high-duty-cycle operation, while the 600 mV reference is internal for fixed-output versions-eliminating external divider requirements on FB.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Output Current | 1.8 A continuous - supports high-current microcontrollers and CAN transceivers without external boost stages |
| Output Voltage | 5.0 V ±2% - factory-trimmed for direct MCU core/logic rail use without post-regulation |
| Input Voltage Range | 4.75 V to 45 V - accommodates cold-crank (4.5 V) and load-dump (40 V+) events in 12 V automotive systems |
| Switching Frequency | 370 kHz nominal - enables compact 18–56 µH inductors and 33–120 µF output capacitors |
| Shutdown Current | <2 µA - allows battery-backed modules to retain multi-year shelf life without significant drain |
| Junction Temp Range | −40 °C to +150 °C - qualified per AEC-Q100 Grade 0 for under-hood placement |
| Thermal Resistance | RthJA = 52 K/W - requires minimal copper area (2s2p FR4, thermal vias under exposed pad) for full-load operation |
Pinout & Package
PG-DSO-8 package with exposed thermal pad (connected to GND and heatsink); 8-pin surface-mount device optimized for automotive PCB layouts with high thermal and EMI robustness.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 (SYNC) | Synchronization Input | Accepts external clock (200–530 kHz) to align switching with system timing; tie to GND if unused |
| 2 (GND) | Power Ground | Main return path; must be low-inductance connection to exposed pad and system ground plane |
| 3 (COMP) | Compensation Node | Connects external RC network to stabilize voltage loop; critical for transient response and phase margin |
| 4 (FB) | Feedback Input | Internally referenced to 5.0 V; connect directly to output capacitor for fixed-output operation |
| 5 (BDS) | Bootstrap Supply Input | Connects bootstrap capacitor between BDS and BUO to sustain high-side gate drive during duty cycles >50% |
| 6 (BUO) | Buck Switch Output | Source of integrated DMOS; connects to cathode of catch diode and buck inductor node |
| 7 (EN) | Enable Input | Active-high logic input with internal pull-down; <2 µA shutdown current enables deep sleep modes |
| 8 (VS) | Supply Voltage Input | Main input rail (4.75–45 V); requires local ceramic decoupling near pin |
Key Features
| Feature | Design Value |
|---|---|
| Integrated 1.8 A Power DMOS | Eliminates external MOSFET and driver, reducing BOM count and layout complexity in space-constrained ECUs |
| PWM with Feed-Forward Control | Enables sub-10 µs line transient recovery without output capacitor oversizing, critical for ignition pulse immunity |
| Soft-Start Ramp Generator | Prevents output overshoot and inrush current spikes during cold-start, protecting downstream 5 V logic rails |
| AEC-Q100 Qualified | Validated for automotive temperature, vibration, and lifetime stress profiles - no requalification needed for Tier 1 designs |
| Charge Pump for Gate Drive | Maintains sufficient VGS on internal DMOS even at VIN = 5.5 V, enabling reliable start-up during battery brownout |
Applications
| Engine Control Unit (ECU) Power Supply | Body Control Module (BCM) Core Rail |
|---|---|
Use Scenario: Powers 32-bit MCU, CAN FD transceiver, and analog sensor interface in gasoline/diesel engine management systems. IC Role / Device Role / Timing Role: Primary 5.0 V buck regulator supplying core logic and communication peripherals. Use Value: Withstands 45 V load-dump transients and maintains regulation down to 4.75 V during cranking - eliminates need for upstream TVS or LDO backup. | Use Scenario: Supplies 5.0 V rail to microcontroller, LIN transceivers, and door/window motor drivers in vehicle body electronics. IC Role / Device Role / Timing Role: Main DC/DC converter for centralized power domain with enable-controlled sleep/wake sequencing. Use Value: <2 µA shutdown current extends battery life in parked-state monitoring; thermal rating supports placement near HVAC actuators. |
| ADAS Camera Module Power | Automotive Infotainment SoC Rail |
Use Scenario: Provides clean, low-noise 5.0 V supply to image sensor, ISP, and MIPI serializer in forward-facing camera systems. IC Role / Device Role / Timing Role: Pre-regulator feeding low-dropout post-regulators for noise-sensitive analog front-ends. Use Value: 370 kHz fixed frequency enables predictable EMI filtering; feed-forward control suppresses ripple from alternator noise. | Use Scenario: Delivers stable 5.0 V to application processor I/O and memory interfaces in head-unit and digital cluster designs. IC Role / Device Role / Timing Role: High-current intermediate rail generator supporting dynamic load steps up to 1.5 A. Use Value: Integrated current limiting and thermal shutdown prevent fault propagation during DDR memory burst activity or display backlight surges. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar automotive buck regulator applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| LM2678SD-5.0/NOPB | 5.0 V fixed output, 5 A rating, 260 kHz switching, no sync input, non-AEC-Q100 | Targeted at industrial/commercial power supplies; lacks automotive thermal and transient robustness | Select only for non-automotive designs requiring higher current and lower cost; not suitable for under-hood use |
| MPQ4420AGL-AEC1-Z | 5.0 V fixed output, 2 A rating, 500 kHz switching, AEC-Q100 Grade 1 (−40 °C to +125 °C), no feed-forward | Rated for cabin ambient only; missing feed-forward limits line transient performance vs. TLE8366 | Use where smaller footprint and higher frequency are prioritized over cranking/load-dump resilience |
Compared with LM2678SD-5.0/NOPB and MPQ4420AGL-AEC1-Z, the TLE8366EVXUMA1 uniquely combines AEC-Q100 Grade 0 qualification, feed-forward line regulation, and 45 V input tolerance - making it the only choice for direct-fit replacement in engine bay power domains requiring guaranteed operation at 150 °C junction temperature.
Availability
TLE8366EVXUMA1 is available at Aetrix Electronics and suitable for engine control units, body control modules, and ADAS camera systems requiring stable component supply across extended automotive lifecycles.
Supply support for TLE8366EVXUMA1 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 qualification infrastructure.
The TLE8366 belongs to Infineon's automotive power regulator product line, engineered specifically for robust DC/DC conversion in engine, transmission, and chassis control systems under extreme thermal and electrical stress.
FAQ
Is TLE8366EVXUMA1 pin-compatible with other TLE8366 variants?
Yes - all TLE8366 variants (EV50, EV33, EV) share identical PG-DSO-8 pinout and package. The only functional difference lies in internal feedback resistor network: EVXUMA1 is factory-set to 5.0 V, so FB pin connects directly to output capacitor without external divider.
What is the minimum input voltage required for startup?
The TLE8366EVXUMA1 initiates regulation when VS reaches 4.75 V, provided EN is high and the BDS capacitor is charged. Startup is guaranteed down to 4.5 V with reduced duty cycle, supported by the integrated charge pump for gate drive enhancement during low-VIN conditions.
Does TLE8366EVXUMA1 require external compensation components?
Yes - a Type II compensation network (resistor + capacitor + optional series capacitor) must be connected between COMP and GND. Component values depend on selected inductor and output capacitor; design guidelines are provided in Section 14 "Application Information" of the datasheet.
How does the synchronization feature affect EMI performance?
Synchronizing multiple TLE8366EVXUMA1 devices to a common clock prevents beat-frequency harmonics and concentrates switching noise into narrower spectral bands, simplifying EMI filter design and improving CISPR-25 compliance in clustered power domains like domain controllers.
TLE8366EVXUMA1 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Infineon Technologies
- Series:
- -
- Package/Case:
- 8-SOIC (0.154", 3.90mm Width)
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Active
- Function:
- Step-Down
- Output Configuration:
- Positive
- Topology:
- Buck
- Output Type:
- Adjustable
- Number of Outputs:
- 1
- Voltage - Input (Min):
- 4.75V
- Voltage - Input (Max):
- 45V
- Voltage - Output (Min/Fixed):
- 0.6V
- Voltage - Output (Max):
- 16V
- Current - Output:
- 1.8A
- Frequency - Switching:
- 370kHz
- Synchronous Rectifier:
- No
- Operating Temperature:
- -40°C ~ 150°C (TJ)
- Grade:
- Automotive
- Qualification:
- AEC-Q100
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- PG-DSO-8
TLE8366EVXUMA1 FAQ
1.How can I place an order for TLE8366EVXUMA1 through Aetrix?
Please submit a Request for Quotation (RFQ) for TLE8366EVXUMA1 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 TLE8366EVXUMA1 reliable?
The price and inventory of TLE8366EVXUMA1 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for TLE8366EVXUMA1 is usually 5 days.
3.What payment methods are accepted for TLE8366EVXUMA1?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for TLE8366EVXUMA1 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for TLE8366EVXUMA1?
TLE8366EVXUMA1 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your TLE8366EVXUMA1 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 TLE8366EVXUMA1?
For technical support, including TLE8366EVXUMA1 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your TLE8366EVXUMA1 requirements.
6.How does Aetrix verify that TLE8366EVXUMA1 is sourced from the original manufacturer or authorized distributors?
All TLE8366EVXUMA1 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 TLE8366EVXUMA1 meets industry standards.
7.What is the process for return or replacement of TLE8366EVXUMA1?
All TLE8366EVXUMA1 units undergo pre-shipment inspection (PSI). If there is an issue with TLE8366EVXUMA1, 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 TLE8366EVXUMA1 part is unused and in its original packaging.
Return procedure for TLE8366EVXUMA1:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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