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Infineon Technologies TLE4274DV33ATMA2
- Part No.:
- TLE4274DV33ATMA2
- Manufacturer:
- Infineon Technologies
- Package:
- TO-252-3, DPAK (2 Leads + Tab), SC-63
- Datasheet:
-
TLE4274DV33ATMA2.pdf
- Description:
- IC REG LIN 3.3V 400MA TO252-3-11
- Quantity:
- Payment:
- Shipping:
Inventory:549
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Product details
Overview
TLE4274DV33ATMA2 from Infineon Technologies is a 3.3 V fixed-output linear voltage regulator in PG-TO252-3-11 (D-PAK) package, delivering up to 400 mA output current with ±4% output voltage accuracy over -40 °C to +150 °C junction temperature. It features reverse-polarity protection, short-circuit proof operation, thermal shutdown, and is AEC-Q100 qualified for automotive power supply rails.
For engineers reviewing the TLE4274DV33ATMA2 datasheet, TLE4274DV33ATMA2 pinout, TLE4274DV33ATMA2 application, or TLE4274DV33ATMA2 equivalent, key selection criteria include its 400 mA continuous output, 0.7–1.2 V dropout at 300 mA, 100 µA typical quiescent current at 1 mA load, RoHS-compliant green packaging, and automotive-grade reliability under 4.7–40 V input range.
Technical Context
The TLE4274DV33ATMA2 uses a bandgap reference and control amplifier to regulate output voltage by driving a series pass transistor, with saturation control preventing oversaturation under high load. Its internal protection circuits actively monitor temperature, reverse polarity, and overload conditions.
Stability requires an output capacitor ≥10 µF with ESR ≤2.5 Ω and an input capacitor (100 nF ceramic) placed directly at pins 1 and 2/4. The device operates across 4.7–40 V input while maintaining 3.3 V ±4% output from -40 °C to +150 °C junction temperature.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Output Voltage | 3.3 V ±4% (3.17–3.44 V); stable across 5–400 mA load and 4.7–40 V input |
| Max Output Current | 400 mA continuous; internally current-limited with foldback behavior above 600 mA |
| Dropout Voltage | 0.7–1.2 V at 300 mA; defines minimum VI–VQ margin needed for regulation |
| Quiescent Current | 8–30 µA to 20–30 mA depending on load; enables low-power standby modes |
| Thermal Shutdown | Activates at Tj ≈ 150 °C; hysteresis ensures safe restart after cooling |
| Input Voltage Range | 4.7–40 V DC; supports 12 V/24 V automotive battery systems with transients |
| PSRR | 60 dB at 100 Hz; suppresses ripple from upstream switching converters or alternators |
Pinout & Package
PG-TO252-3-11 (D-PAK) package with exposed thermal pad connected internally to GND (pins 2 and 4). Pin 1 is INPUT, pins 2 & 4 are GND (heatsink-connected), and pin 3 is OUTPUT.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 (I) | Input | Unregulated DC input; must be decoupled with 100 nF ceramic capacitor directly to GND |
| 2, 4 (GND) | Ground / Heatsink | Common return and thermal path; soldered to PCB copper area for Rthja = 70 K/W |
| 3 (Q) | Output | Regulated 3.3 V; requires ≥10 µF output capacitor with ESR ≤2.5 Ω for stability |
Key Features
| Feature | Design Value |
|---|---|
| Reverse-polarity protection | Withstands -42 V input without damage; eliminates need for external series diode |
| Short-circuit proof operation | Survives indefinite output-to-GND fault with automatic current limiting and thermal foldback |
| AEC-Q100 qualification | Qualified for Grade 1 (-40 °C to +125 °C ambient) and extended junction range (-40 °C to +150 °C) |
| Green product (RoHS compliant) | Lead-free, halogen-free, and compliant with EU Directive 2011/65/EU |
| Low quiescent current | As low as 8 µA at 1 mA load; critical for always-on automotive modules (e.g., CAN wake-up circuits) |
Applications
| Engine Control Unit (ECU) Power Rail | Automotive Camera Module Supply |
|---|---|
Use Scenario: Provides clean 3.3 V bias to microcontroller I/O, CAN transceiver, and sensor interfaces in engine bay environments. IC Role / Device Role / Timing Role: Primary post-regulator for 12 V battery-derived supply; handles load dumps and cold-crank transients. Use Value: 400 mA output and 150 °C junction rating enable direct replacement of discrete LDO+protection solutions in compact ECU designs. | Use Scenario: Powers image signal processor (ISP) and MIPI interface in rear-view or surround-view camera modules. IC Role / Device Role / Timing Role: Low-noise, stable 3.3 V source with high PSRR to minimize clock jitter and pixel noise. Use Value: 60 dB PSRR at 100 Hz suppresses alternator ripple; ±4% tolerance meets ISP core voltage requirements without closed-loop feedback. |
| Body Control Module (BCM) Subsystem | Automotive Radar Sensor Bias |
Use Scenario: Supplies 3.3 V to LIN transceivers, door lock actuators, and interior lighting controllers. IC Role / Device Role / Timing Role: Local point-of-load regulator with reverse-polarity and short-circuit resilience for distributed architecture. Use Value: Reverse-polarity protection eliminates need for external blocking diode, reducing BOM count and PCB area in cost-sensitive BCMs. | Use Scenario: Delivers regulated 3.3 V to RF front-end ICs and ADCs in 77 GHz radar modules. IC Role / Device Role / Timing Role: Low-dropout, thermally robust supply for analog signal chain components requiring stable reference voltage. Use Value: 0.7 V dropout at 300 mA allows operation during cold-crank (down to ~6 V battery), ensuring radar functionality during engine start. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar fixed-output linear regulator applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| TLV73333PDBVR | 300 mA max output, 250 mV typical dropout, SOT-23-5 package, no reverse-polarity protection | Lower current, smaller footprint; unsuitable for automotive transients or reverse-battery scenarios | Select only for non-automotive, space-constrained, low-transient applications |
| NCV4274AST33T3G | Same 400 mA rating, identical 3.3 V ±4% spec, SOT-223-4 package, same AEC-Q100 Grade 1 | Smaller thermal resistance in SOT-223 (Rthja = 100 K/W vs. 70 K/W), lower power dissipation capability | Prefer for lower-power designs where D-PAK thermal mass is unnecessary |
Compared with TLV73333PDBVR and NCV4274AST33T3G, the TLE4274DV33ATMA2 uniquely combines reverse-polarity tolerance, D-PAK thermal performance (Rthja = 70 K/W), and full automotive transient resilience-making it optimal for under-hood 12 V/24 V systems demanding robustness over miniaturization.
Availability
TLE4274DV33ATMA2 is available at Aetrix Electronics and suitable for engine control units, automotive camera modules, body control modules, and radar sensor subsystems requiring stable component supply with automotive-grade qualification and long-term lifecycle support.
Supply support for TLE4274DV33ATMA2 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 TLE4274 series belongs to Infineon's automotive linear regulator product line, designed specifically for robust, high-reliability power supply in harsh vehicle environments including engine compartments and ADAS sensor nodes.
FAQ
What is the maximum allowable input voltage for continuous operation?
The TLE4274DV33ATMA2 supports continuous input voltages from 4.7 V to 40 V. Absolute maximum rating is 45 V, but operation above 40 V is not recommended for reliability. Transient spikes up to 45 V are tolerated per AEC-Q100 stress testing, provided duration is <200 ms and duty cycle remains low.
Does this regulator require an external bypass capacitor on the input pin?
Yes - a 100 nF ceramic capacitor must be placed directly between pin 1 (INPUT) and pins 2/4 (GND), with minimal trace length. This compensates for line inductance and prevents oscillation due to input LC resonance, as specified in the application circuit (Figure 4) and dimensioning guidelines.
Can the TLE4274DV33ATMA2 be used without an output capacitor?
No - an output capacitor ≥10 µF with ESR ≤2.5 Ω is mandatory for loop stability. Omitting it causes oscillation and unregulated output. The datasheet explicitly states stability is guaranteed only within this capacitor specification across the full operating temperature range (-40 °C to +150 °C).
Is thermal derating required when operating at high ambient temperatures?
Yes - thermal derating is necessary. With Rthja = 70 K/W (PG-TO252-3-11), power dissipation must be limited to maintain Tj ≤ 150 °C. For example, at 85 °C ambient and 300 mA load (Vdr ≈ 0.9 V), PD = 0.27 W → ∆T = 18.9 °C → Tj = 103.9 °C, well within limit. At 125 °C ambient, max usable current drops to ~220 mA.
TLE4274DV33ATMA2 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Infineon Technologies
- Series:
- OPTIREG™
- Package/Case:
- TO-252-3, DPAK (2 Leads + Tab), SC-63
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Active
- Output Configuration:
- Positive
- Output Type:
- Fixed
- Number of Regulators:
- 1
- Voltage - Input (Max):
- 40V
- Voltage - Output (Min/Fixed):
- 3.3V
- Voltage - Output (Max):
- -
- Voltage Dropout (Max):
- 1.2V @ 300mA
- 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-TO252-3-11
TLE4274DV33ATMA2 FAQ
1.How can I place an order for TLE4274DV33ATMA2 through Aetrix?
Please submit a Request for Quotation (RFQ) for TLE4274DV33ATMA2 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 TLE4274DV33ATMA2 reliable?
The price and inventory of TLE4274DV33ATMA2 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for TLE4274DV33ATMA2 is usually 5 days.
3.What payment methods are accepted for TLE4274DV33ATMA2?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for TLE4274DV33ATMA2 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for TLE4274DV33ATMA2?
TLE4274DV33ATMA2 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your TLE4274DV33ATMA2 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 TLE4274DV33ATMA2?
For technical support, including TLE4274DV33ATMA2 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your TLE4274DV33ATMA2 requirements.
6.How does Aetrix verify that TLE4274DV33ATMA2 is sourced from the original manufacturer or authorized distributors?
All TLE4274DV33ATMA2 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 TLE4274DV33ATMA2 meets industry standards.
7.What is the process for return or replacement of TLE4274DV33ATMA2?
All TLE4274DV33ATMA2 units undergo pre-shipment inspection (PSI). If there is an issue with TLE4274DV33ATMA2, 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 TLE4274DV33ATMA2 part is unused and in its original packaging.
Return procedure for TLE4274DV33ATMA2:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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