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Infineon Technologies TLE4266-2GS V33
- Part No.:
- TLE4266-2GS V33
- Manufacturer:
- Infineon Technologies
- Package:
- TO-261-4, TO-261AA
- Datasheet:
-
TLE4266-2GS V33.pdf
- Description:
- IC REG LIN 3.3V 150MA SOT223-4
- Quantity:
- Payment:
- Shipping:
Inventory:2,450
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Product details
Overview
TLE4266-2GS V33 from Infineon is a monolithic low-drop fixed linear voltage regulator delivering 3.3 V ±3% at up to 150 mA, featuring inhibit control (INH), reverse polarity protection, overtemperature shutdown, and operation from −40 °C to +150 °C junction temperature. It supports automotive microprocessor supply under harsh conditions with input voltage range 4.4–45 V and quiescent current as low as 1 µA in OFF mode.
For engineers reviewing the TLE4266-2GS V33 datasheet, TLE4266-2GS V33 pinout, TLE4266-2GS V33 application, or TLE4266-2GS V33 equivalent, key selection criteria include output accuracy at 100 mA load, INH logic threshold (3.5 V turn-on), drop voltage ≤1.10 V, thermal derating above 25 V input, and PG-SOT223-4 package compatibility with PCB layout constraints for automotive ECU power rails.
Technical Context
The TLE4266-2GS V33 implements a bandgap-referenced feedback loop comparing a resistive divider of the 3.3 V output against a 2.5 V internal reference, enabling regulation stability across wide input and temperature ranges. Its control amplifier drives a pass transistor with saturation sensing and thermal foldback to limit junction temperature during overload or high ambient conditions.
Functional inhibit logic uses an integrated 1 MΩ pull-down resistor on the INH pin; a high-level signal ≥3.5 V enables regulation, while ≤0.8 V disables output and reduces quiescent current to ≤1 µA. Protection circuitry includes reverse-polarity blocking, short-circuit current limiting, and SOA-based current reduction above 25 V input voltage.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Output Voltage | 3.3 V ±3% (±2% not guaranteed; valid for 5–100 mA load, 6–21 V input) |
| Max Output Current | 150 mA continuous; reduced under SOA protection above 25 V input |
| Drop Voltage | ≤1.10 V at 100 mA load - enables stable regulation down to 4.4 V input |
| Quiescent Current | ≤1 µA in OFF mode (INH = 0 V); ≤70 µA in ON mode at 100 µA load |
| Input Voltage Range | 4.4 V to 45 V - supports battery transients up to Load Dump (ISO 7637-2) |
| Operating Temperature | −40 °C to +150 °C junction - qualified per AEC-Q100 Grade 0 |
| Output Capacitor | ≥10 µF with ESR ≤4 Ω - ensures loop stability; compatible with ceramic/tantalum |
Pinout & Package
The device is housed in a surface-mount PG-SOT223-4 package with exposed thermal pad (pin 4 = GND), optimized for thermal dissipation in automotive PCBs with limited airflow.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 (I) | Input voltage supply | Accepts 4.4–45 V; requires local 100 nF ceramic decoupling directly at pin |
| 2 (INH) | Inhibit control input | High ≥3.5 V enables regulator; internal 1 MΩ pull-down ensures safe OFF state |
| 3 (Q) | Regulated 3.3 V output | Delivers up to 150 mA; requires ≥10 µF output capacitor with ESR ≤4 Ω |
| 4 (GND) | Power ground / thermal pad | Primary return path and thermal interface; must be connected to large copper area |
Key Features
| Feature | Design Value |
|---|---|
| Automotive qualification | AEC-Q100 Grade 0 qualified - validated for −40 °C to +150 °C operation in engine bay ECUs |
| Ultra-low quiescent current | ≤1 µA in OFF mode - enables always-on systems without battery drain |
| Reverse polarity protection | Withstands −42 V input - eliminates need for external series diode in battery-connected designs |
| Thermal shutdown | Active foldback above 150 °C junction - prevents permanent damage during sustained overload |
| Inhibit function | Digital ON/OFF control via single logic-level pin - simplifies MCU-controlled power sequencing |
Applications
| Body Control Module (BCM) | Engine Control Unit (ECU) Sensor Supply |
|---|---|
Use Scenario: Powering CAN transceivers and LIN interface ICs in vehicle door modules. IC Role / Device Role / Timing Role: Primary 3.3 V rail regulator with enable/disable synchronized to vehicle wake-up signals. Use Value: 1 µA OFF-mode current prevents parasitic drain during vehicle sleep; 3.3 V ±3% meets ISO 11898-2 receiver VCC tolerance. | Use Scenario: Supplying oxygen sensor heaters and knock sensor signal conditioners. IC Role / Device Role / Timing Role: Stable low-noise 3.3 V source isolated from noisy 12 V battery rail via dropout margin. Use Value: 1.10 V max drop allows regulation from cold-cranked 6.5 V battery; thermal shutdown protects during exhaust heat exposure. |
| Advanced Driver Assistance Systems (ADAS) Camera ECU | Infotainment Head Unit Microcontroller Core Rail |
Use Scenario: Powering image signal processors and MIPI CSI-2 serializers in front-facing cameras. IC Role / Device Role / Timing Role: Secondary regulated rail derived from main 5 V domain, controlled by SoC power manager. Use Value: INH pin enables precise power-up sequencing before clock initialization; 10 µF/≤4 Ω output cap ensures <10 mV ripple at 100 MHz switching noise. | Use Scenario: Supplying ARM Cortex-M7 core voltage for infotainment application processors. IC Role / Device Role / Timing Role: Always-on 3.3 V LDO for RTC and wake logic, independent of main SoC power states. Use Value: AEC-Q100 qualification ensures reliability across thermal cycles; 150 mA capacity supports burst-mode memory access without brownout. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar low-drop automotive LDO applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| NCP1117ST33T3G | Fixed 3.3 V, ±2% accuracy, 1 A max, no inhibit pin, SOT-223 package | Lacks INH control and AEC-Q100 qualification; higher Iq (6 mA typical) | Select when higher current (>150 mA) and cost sensitivity outweigh inhibit functionality and automotive compliance |
| TLV73333PDBVR | 3.3 V, ±1% accuracy, 300 mA, 30 µA Iq, no reverse polarity protection, SOT-23-5 | Smaller package but no reverse-voltage tolerance or AEC-Q100 rating; lacks thermal shutdown foldback | Select for space-constrained non-automotive industrial use where precision and low Iq dominate over robustness |
Compared with NCP1117ST33T3G and TLV73333PDBVR, the TLE4266-2GS V33 uniquely combines AEC-Q100 Grade 0 qualification, reverse polarity immunity, and sub-µA OFF-mode current - making it irreplaceable in battery-backed automotive modules requiring zero-drain sleep states and transient-hardened operation.
Availability
TLE4266-2GS V33 is available at Aetrix Electronics and suitable for body control modules, engine control units, ADAS camera ECUs, and infotainment head units requiring stable component supply under automotive-grade lifecycle and environmental stress.
Supply support for TLE4266-2GS V33 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 AG is a German semiconductor manufacturer specializing in power management, automotive ICs, and security solutions, with global R&D and manufacturing infrastructure.
The OPTIREG™ linear regulator product line targets automotive power supply design, delivering robust, AEC-Q100-qualified LDOs with features like inhibit control, reverse polarity protection, and extended temperature operation for ECU and sensor applications.
FAQ
What is the minimum input voltage required for regulation at full 150 mA load?
The minimum input voltage is 4.4 V, defined as VQ + VDr = 3.3 V + 1.10 V (max drop voltage at 100 mA). At 150 mA, drop voltage increases slightly; testing confirms stable regulation down to 4.5 V input under worst-case conditions per datasheet Figure 12.
Can the TLE4266-2GS V33 be used without the INH pin connected?
Yes - the INH pin has an internal 1 MΩ pull-down resistor, so leaving it unconnected defaults the device to OFF state. To enable regulation, apply ≥3.5 V to INH; floating the pin is not recommended due to noise susceptibility in automotive environments.
Is an input capacitor mandatory, and what value is recommended?
Yes - a 100 nF ceramic capacitor is mandatory directly at the I pin to suppress high-frequency noise and prevent oscillation. For long supply lines (>1 m), add a 470 µF electrolytic capacitor upstream; a 1 Ω series resistor between CI and the input rail further dampens resonance induced by wiring inductance.
How does the device behave during load dump transients?
The TLE4266-2GS V33 withstands −42 V reverse polarity and +45 V positive transients per absolute maximum ratings. During ISO 7637-2 Load Dump (up to +87 V for 100 ms), external clamping (e.g., TVS diode) is required upstream - the device itself is not rated for direct exposure to such events but remains protected against reverse connection and moderate overvoltage.
TLE4266-2GS V33 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Infineon Technologies
- Series:
- OPTIREG™
- Package/Case:
- TO-261-4, TO-261AA
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Obsolete
- Output Configuration:
- Positive
- Output Type:
- Fixed
- Number of Regulators:
- 1
- Voltage - Input (Max):
- 45V
- Voltage - Output (Min/Fixed):
- 3.3V
- Voltage - Output (Max):
- -
- Voltage Dropout (Max):
- 1.1V @ 100mA
- Current - Output:
- 150mA
- Current - Quiescent (Iq):
- 60 µA
- Current - Supply (Max):
- 4 mA
- PSRR:
- 68dB (100Hz)
- Control Features:
- Inhibit
- Protection Features:
- 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
TLE4266-2GS V33 FAQ
1.How can I place an order for TLE4266-2GS V33 through Aetrix?
Please submit a Request for Quotation (RFQ) for TLE4266-2GS V33 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 TLE4266-2GS V33 reliable?
The price and inventory of TLE4266-2GS V33 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for TLE4266-2GS V33 is usually 5 days.
3.What payment methods are accepted for TLE4266-2GS V33?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for TLE4266-2GS V33 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for TLE4266-2GS V33?
TLE4266-2GS V33 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your TLE4266-2GS V33 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 TLE4266-2GS V33?
For technical support, including TLE4266-2GS V33 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your TLE4266-2GS V33 requirements.
6.How does Aetrix verify that TLE4266-2GS V33 is sourced from the original manufacturer or authorized distributors?
All TLE4266-2GS V33 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 TLE4266-2GS V33 meets industry standards.
7.What is the process for return or replacement of TLE4266-2GS V33?
All TLE4266-2GS V33 units undergo pre-shipment inspection (PSI). If there is an issue with TLE4266-2GS V33, 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 TLE4266-2GS V33 part is unused and in its original packaging.
Return procedure for TLE4266-2GS V33:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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