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Infineon Technologies TLE42744GSV33HTMA1
- Part No.:
- TLE42744GSV33HTMA1
- Manufacturer:
- Infineon Technologies
- Package:
- TO-261-4, TO-261AA
- Datasheet:
-
TLE42744GSV33HTMA1.pdf
- Description:
- IC REG LIN 3.3V 400MA SOT223-4
- Quantity:
- Payment:
- Shipping:
Inventory:21,139
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Product details
Overview
TLE42744GSV33HTMA1 from Infineon Technologies is a monolithic low-dropout linear voltage regulator delivering 3.3 V ±2% at up to 400 mA output current, with input voltage range 4.7–40 V and dropout voltage as low as 250 mV at 400 mA. It features reverse polarity protection, overtemperature shutdown, and current limiting, and is AEC-Q100 qualified for automotive body control modules and ECU power rails.
For engineers reviewing the TLE42744GSV33HTMA1 datasheet, TLE42744GSV33HTMA1 pinout, TLE42744GSV33HTMA1 application, or TLE42744GSV33HTMA1 equivalent, key selection criteria include its PG-SOT223-4 thermal performance (RthJA = 54 K/W on 2s2p FR4), 150 °C junction rating, quiescent current < 100 µA, and ceramic output capacitor stability requirement (22 µF, ESR ≤ 3 Ω).
Technical Context
The TLE42744GSV33HTMA1 integrates a bandgap reference, error amplifier, and thermal/current protection circuitry in a single die. Its control loop maintains regulation across load steps up to 400 mA while sustaining dropout voltage below 300 mV at full load and ambient temperatures from –40 °C to 150 °C.
Designed for permanent battery connection (VBAT), it uses internal saturation control to limit output current and triggers thermal shutdown above 165 °C. Input transient tolerance extends to –42 V (reverse polarity) and +45 V (surge), meeting ISO 7637-2 Pulse 1/2a/3a requirements when properly decoupled.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Output Voltage | 3.3 V ±2% - stable rail for MCU I/O, CAN transceivers, and sensor interfaces under load and temperature variation |
| Max Output Current | 400 mA - sufficient for powering microcontrollers, EEPROM, and small logic clusters without external pass devices |
| Dropout Voltage | 250 mV @ 400 mA - enables operation down to 3.55 V input, critical for cold-crank automotive conditions |
| Quiescent Current | < 100 µA - minimizes standby drain in always-on vehicle networks (e.g., door modules, alarm systems) |
| Input Voltage Range | 4.7 V to 40 V - supports 12 V and 24 V automotive systems including load dump transients |
| Junction Temp Range | –40 °C to 150 °C - rated for under-hood placement near engine control units and transmission controllers |
| ESD Robustness | HBM ±4 kV, CDM ±1000 V - meets AEC-Q100 stress test requirements for assembly and field reliability |
Pinout & Package
PG-SOT223-4 package with exposed heat slug internally connected to GND; requires PCB copper pour for thermal dissipation and EMI reduction. Pin 1: Input (I), Pin 2: GND, Pin 3: GND (heat slug tie), Pin 4: Output (Q).
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 (I) | Input supply terminal | Connect directly to ceramic bypass capacitor (≥1 µF) at IC pad; withstands –42 V reverse and +45 V surge |
| 2 (GND) | Signal ground reference | Low-impedance return path for control circuitry; must be star-connected to minimize noise coupling |
| 3 (GND / Heat Slug) | Thermal and electrical ground | Internally bonded to die substrate; requires ≥100 mm² copper pour with thermal vias for RthJA ≤ 54 K/W |
| 4 (Q) | Regulated output terminal | Delivers 3.3 V to load; requires 22 µF ceramic capacitor with ESR ≤ 3 Ω placed within 5 mm of pin |
Key Features
| Feature | Design Value |
|---|---|
| Reverse Polarity Protection | Withstands –42 V input without damage or latch-up - eliminates need for external series diode in battery-connected designs |
| Overtemperature Shutdown | Activates at ~165 °C junction temperature with automatic recovery after cooldown - prevents thermal runaway during overload |
| Output Current Limit | Soft-limiting foldback to ~600 mA peak - sustains regulation during short-circuit while limiting power dissipation |
| AEC-Q100 Qualified | Grade 0 (–40 °C to +150 °C) qualification per Rev. G - validated for safety-critical automotive subsystems |
Applications
| Body Control Module (BCM) | Instrument Cluster Power Supply |
|---|---|
Use Scenario: Powers microcontroller, LIN transceivers, and LED drivers in door module ECUs with constant VBAT connection. IC Role / Device Role / Timing Role: Primary 3.3 V LDO supplying core logic and communication peripherals. Use Value: Ultra-low quiescent current (<100 µA) prevents excessive battery drain during vehicle sleep mode. | Use Scenario: Supplies display controller and analog gauges in digital instrument clusters exposed to under-dash thermal cycling. IC Role / Device Role / Timing Role: Stable 3.3 V rail for SPI-interfaced TFT driver ICs and ADC reference circuits. Use Value: 150 °C junction rating and 54 K/W thermal resistance enable reliable operation without forced air cooling. |
| Engine Control Unit (ECU) Sub-Rail | CAN Node Power Conditioning |
Use Scenario: Provides isolated 3.3 V bias for diagnostic interface circuitry adjacent to high-noise ignition drivers. IC Role / Device Role / Timing Role: Secondary regulated rail decoupled from main 5 V domain to reduce cross-talk. Use Value: Integrated reverse polarity and load dump protection eliminate discrete TVS and diode components. | Use Scenario: Powers ISO 11898-2 compliant CAN transceivers in gateway modules requiring clean, low-noise 3.3 V. IC Role / Device Role / Timing Role: Local point-of-load regulator with low ESR capacitor support for signal integrity. Use Value: 22 µF/≤3 Ω output capacitor requirement ensures stable loop response across –40 °C to 125 °C. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar LDO regulator applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| TLV73333PDBVR | 300 mA max output, 170 mV dropout @ 300 mA, 2.5–6.0 V input, no reverse polarity protection | Consumer/portable electronics only; lacks AEC-Q100 qualification and automotive transient robustness | Select only for non-automotive, space-constrained designs where reverse protection is handled externally |
| TPS7B6733QPWPRQ1 | 450 mA max output, 300 mV dropout @ 450 mA, integrated watchdog timer, same 4.7–40 V input range | Supports functional safety monitoring via windowed watchdog; higher cost and larger footprint (HTSSOP-16) | Prefer when ASIL-B compliance or system-level fault detection is required beyond basic regulation |
Compared with TLV73333PDBVR and TPS7B6733QPWPRQ1, the TLE42744GSV33HTMA1 offers superior reverse polarity immunity (–42 V), lower quiescent current, and proven under-hood thermal resilience - making it optimal for cost-sensitive, high-reliability automotive LDO applications without added supervision logic.
Availability
TLE42744GSV33HTMA1 is available at Aetrix Electronics and suitable for body control modules, instrument clusters, engine control units, and CAN node power conditioning requiring stable component supply across automotive production lifecycles.
Supply support for TLE42744GSV33HTMA1 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 MCUs, and industrial gate drivers, with global manufacturing and AEC-Q100 validation infrastructure.
The TLE42744 belongs to Infineon's automotive linear regulator product line, engineered specifically for robust, low-quiescent-power voltage regulation in harsh-temperature, high-transient automotive environments.
FAQ
What is the minimum input voltage required for regulation at full 400 mA load?
The TLE42744GSV33HTMA1 requires a minimum input voltage of 3.55 V to maintain 3.3 V output at 400 mA due to its 250 mV typical dropout voltage. Below this, output collapses linearly; the device remains functional but unregulated. This threshold is verified across –40 °C to 150 °C ambient per datasheet Section 4.2.
Can the heat slug (Pin 3) be left floating or must it connect to PCB ground?
Pin 3 (heat slug) must be soldered to a GND-connected copper pour with thermal vias. It is internally tied to GND and serves as the primary thermal conduction path. Leaving it unconnected raises RthJA to 139 K/W (per JESD51-3), risking thermal shutdown at >150 mW dissipation - violating automotive reliability requirements.
Does this device support ceramic output capacitors, and what ESR range is acceptable?
Yes - the TLE42744GSV33HTMA1 is optimized for ceramic output capacitors. Datasheet Section 4.2.4 specifies ESR ≤ 3 Ω at 10 kHz. Using X7R/X5R 22 µF ceramics with ESR < 100 mΩ ensures phase margin > 45° and avoids oscillation across temperature and load extremes.
Is the TLE42744GSV33HTMA1 pin-compatible with other TLE42744 variants like the DV33 or GV33?
No - PG-SOT223-4 (GSV33) has 4 pins with dual GND connections, while PG-TO252-3 (DV33) and PG-TO263-3 (GV33) are 3-pin packages sharing identical pin 1–2–3 assignments but lacking the dedicated heat slug terminal. PCB layout and thermal design are not interchangeable.
TLE42744GSV33HTMA1 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Infineon Technologies
- Series:
- OPTIREG™
- Package/Case:
- TO-261-4, TO-261AA
- 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):
- 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
- Grade:
- Automotive
- Qualification:
- AEC-Q100
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- PG-SOT223-4
TLE42744GSV33HTMA1 FAQ
1.How can I place an order for TLE42744GSV33HTMA1 through Aetrix?
Please submit a Request for Quotation (RFQ) for TLE42744GSV33HTMA1 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 TLE42744GSV33HTMA1 reliable?
The price and inventory of TLE42744GSV33HTMA1 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for TLE42744GSV33HTMA1 is usually 5 days.
3.What payment methods are accepted for TLE42744GSV33HTMA1?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for TLE42744GSV33HTMA1 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for TLE42744GSV33HTMA1?
TLE42744GSV33HTMA1 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your TLE42744GSV33HTMA1 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 TLE42744GSV33HTMA1?
For technical support, including TLE42744GSV33HTMA1 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your TLE42744GSV33HTMA1 requirements.
6.How does Aetrix verify that TLE42744GSV33HTMA1 is sourced from the original manufacturer or authorized distributors?
All TLE42744GSV33HTMA1 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 TLE42744GSV33HTMA1 meets industry standards.
7.What is the process for return or replacement of TLE42744GSV33HTMA1?
All TLE42744GSV33HTMA1 units undergo pre-shipment inspection (PSI). If there is an issue with TLE42744GSV33HTMA1, 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 TLE42744GSV33HTMA1 part is unused and in its original packaging.
Return procedure for TLE42744GSV33HTMA1:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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