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Infineon Technologies TLE4276DVATMA2
- Part No.:
- TLE4276DVATMA2
- Manufacturer:
- Infineon Technologies
- Package:
- TO-252-5, DPAK (4 Leads + Tab), TO-252AD
- Datasheet:
-
TLE4276DVATMA2.pdf
- Description:
- IC REG LIN POS ADJ 400MA TO252-5
- Quantity:
- Payment:
- Shipping:
Inventory:3,384
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Product details
Overview
TLE4276DVATMA2 from Infineon is a low-dropout linear voltage regulator in PG-TO252-5 (D-Pak) package, delivering fixed 5.0 V ±4% output at up to 400 mA from input voltages up to 40 V. It features inhibit control (low-active), reverse-polarity protection, short-circuit proofing, and thermal shutdown. Used in automotive body control modules where space-constrained 5 V rail stability and AEC-Q100 qualification are required.
For engineers reviewing the TLE4276DVATMA2 datasheet, TLE4276DVATMA2 pinout, TLE4276DVATMA2 application, or TLE4276DVATMA2 equivalent, key selection criteria include dropout voltage ≤500 mV at 250 mA, quiescent current <10 µA in inhibit mode, ±4% output tolerance over -40°C to +150°C, and compliance with automotive-grade reliability standards.
Technical Context
The TLE4276DVATMA2 employs a bandgap reference and error amplifier driving a series pass transistor with saturation control to prevent oversaturation under load. Its internal protection circuits actively monitor for overtemperature, reverse polarity, and overload conditions-triggering automatic shutdown without external components.
It operates across an input range of 5.5 V to 40 V (minimum VI = VQ + 0.5 V), maintains regulation with output capacitance ≥22 µF and ESR ≤3 Ω, and achieves 54 dB PSRR at 100 Hz. The inhibit function reduces total current consumption to <10 µA when pulled low, enabling low-power sleep modes in automotive ECUs.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Output Voltage | Fixed 5.0 V ±4% - stable supply for MCU cores, CAN transceivers, and sensors requiring tight DC accuracy. |
| Max Output Current | 400 mA continuous - supports multiple downstream loads (e.g., microcontroller + interface IC + LED driver) on single rail. |
| Dropout Voltage | 250–500 mV at 250 mA - enables operation down to ~5.5 V input, critical for cold-crank automotive conditions. |
| Inhibit Current | <10 µA at VINH = 0 V - allows ultra-low-power system standby without external disconnect switches. |
| Thermal Protection | Active shutdown at Tj ≥150°C - prevents latch-up or permanent damage during sustained overload or poor heatsinking. |
| ESD Rating | 2000 V HBM - meets automotive board-level ESD robustness requirements without added protection diodes. |
| Operating Temp | -40°C to +150°C junction - qualified per AEC-Q100 Grade 0, suitable for engine bay or transmission control units. |
Pinout & Package
Package: PG-TO252-5 (D-Pak), thermally enhanced with exposed drain pad connected to GND for PCB heatsinking. Pin 1: Input (I); Pin 2: Inhibit (INH, low-active); Pin 3: Ground (GND); Pin 4: Not Connected (N.C.); Pin 5: Output (Q). Heatsink pad must be soldered to GND copper pour.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 (I) | Input voltage supply | Accepts 5.5–40 V DC; requires local 100 nF ceramic capacitor directly to GND for high-frequency stability. |
| 2 (INH) | Inhibit control input | Low-active enable: logic low disables regulator, reducing total current to <10 µA; pulled high internally via 100 kΩ resistor. |
| 3 (GND) | Power and signal reference | Common return path for input/output capacitors and heatsink; must connect to large copper area for thermal dissipation. |
| 4 (N.C.) | No connection | Not bonded internally; electrically isolated-must remain unconnected on PCB layout. |
| 5 (Q) | Regulated output | Delivers 5.0 V ±4%; requires ≥22 µF output capacitor with ESR ≤3 Ω at 10 kHz for loop stability. |
Key Features
| Feature | Design Value |
|---|---|
| Reverse polarity protection | Withstands -42 V input without damage-eliminates need for external series diode in battery-reversed scenarios. |
| Short-circuit proof operation | Current-limited to ≤1100 mA during output short; auto-recovers when fault clears-no latch-up or manual reset needed. |
| Low quiescent current in inhibit mode | <10 µA total device current-enables >1-year battery life in always-on automotive modules (e.g., alarm controllers). |
| AEC-Q100 qualified | Grade 0 (-40°C to +150°C) qualification confirmed-validates reliability for safety-critical power rails in ADAS and powertrain systems. |
| Integrated thermal shutdown | Turns off output at Tj ≥150°C and restarts after cooldown-prevents thermal runaway without external thermal sensor or controller. |
Applications
| Body Control Module (BCM) | Door Module ECU |
|---|---|
Use Scenario: Powering microcontroller, LIN transceiver, and window motor drivers in vehicle door electronics. IC Role / Device Role / Timing Role: Primary 5 V LDO supplying core logic and communication interfaces. Use Value: Stable 5 V rail ensures reliable LIN frame timing and ADC accuracy despite battery voltage sag during actuator startup. | Use Scenario: Supplying interior lighting control IC and mirror position sensors in side-door assemblies. IC Role / Device Role / Timing Role: Fixed-output LDO providing noise-immune 5 V for analog sensor bias and PWM dimming circuitry. Use Value: Low dropout and high PSRR suppress alternator ripple, preventing flicker in LED lighting controlled by PWM signals. |
| Engine Control Unit (ECU) Auxiliary Rail | Transmission Control Module (TCM) |
Use Scenario: Generating auxiliary 5 V for knock sensor signal conditioning and fuel injector driver logic. IC Role / Device Role / Timing Role: Secondary regulated rail decoupled from main 5 V domain to isolate noise-sensitive analog front-end. Use Value: Reverse polarity and short-circuit protection eliminate field failures due to service wiring errors or harness shorts. | Use Scenario: Powering solenoid driver ICs and gear position sensors in automatic transmission control units. IC Role / Device Role / Timing Role: High-current 5 V source supporting transient peak loads during shift events. Use Value: 400 mA capability and thermal shutdown ensure uninterrupted operation during repeated high-load shifts at elevated ambient temperatures. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar low-dropout automotive voltage regulator applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| TLV73350PDBVR | 300 mA max output, 250 mV dropout at 300 mA, SOT-23-5 package, no inhibit or reverse polarity protection. | Limited to non-safety, non-under-hood applications; lacks AEC-Q100 qualification and thermal/short-circuit robustness. | Select only for cost-sensitive, low-power cabin modules where full automotive protection is not required. |
| NCP1117ST50T3G | 800 mA output, 1.2 V dropout at 800 mA, TO-220/TO-252, no inhibit, no reverse polarity protection, AEC-Q100 optional (not standard). | Higher current but larger footprint and missing key automotive protections; requires external enable and reverse-battery diode. | Consider only if higher output current is mandatory and board space allows TO-252 variant with added discrete protection. |
Compared with TLV73350PDBVR and NCP1117ST50T3G, TLE4276DVATMA2 uniquely integrates inhibit control, reverse-polarity hardening, and AEC-Q100 Grade 0 qualification in a compact D-Pak-making it the only drop-in solution for space-constrained, safety-compliant automotive 5 V rails.
Availability
TLE4276DVATMA2 is available at Aetrix Electronics and suitable for automotive body control modules, door ECUs, engine management auxiliary rails, and transmission control units requiring stable component supply across extended temperature ranges and long production lifecycles.
Supply support for TLE4276DVATMA2 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 R&D and manufacturing infrastructure.
The OPTIREG™ linear product line delivers highly integrated, AEC-Q100-qualified voltage regulators optimized for harsh automotive environments-designed to replace discrete protection + regulation solutions with single-chip robustness.
FAQ
What is the minimum input voltage required for regulation?
The TLE4276DVATMA2 requires a minimum input voltage of VQ + 0.5 V = 5.5 V to maintain regulation across its full operating temperature range (-40°C to +150°C). Below this, output voltage drops linearly with input; datasheet specifies guaranteed operation from 5.5 V to 40 V.
Can the INH pin be left floating?
No-INH has an internal 100 kΩ pull-up resistor to VI, but leaving it floating risks noise-induced toggling. For reliable operation, tie INH to VI via a 10 kΩ resistor for enabled state, or drive it actively low (≤0.8 V) to disable. Floating may cause intermittent shutdown in noisy automotive environments.
Is an external capacitor required on the output?
Yes-a minimum 22 µF output capacitor with ESR ≤3 Ω at 10 kHz is mandatory for loop stability. Ceramic or low-ESR tantalum types are recommended; aluminum electrolytics require careful ESR verification. Omitting or undersizing this capacitor causes oscillation and output voltage instability.
Does the TLE4276DVATMA2 support adjustable output voltage?
No-TLE4276DVATMA2 is the fixed 5.0 V version. Adjustable variants (e.g., TLE4276DV) use Pin 4 (VA) for external feedback, but TLE4276DVATMA2 has Pin 4 marked N.C. and is internally trimmed to 5.0 V. Use TLE4276DV or TLE4276GV for adjustable configurations.
TLE4276DVATMA2 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Infineon Technologies
- Series:
- OPTIREG™
- Package/Case:
- TO-252-5, DPAK (4 Leads + Tab), TO-252AD
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Active
- Output Configuration:
- Positive
- Output Type:
- Adjustable
- Number of Regulators:
- 1
- Voltage - Input (Max):
- 40V
- Voltage - Output (Min/Fixed):
- 2.5V
- Voltage - Output (Max):
- 20V
- 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-TO252-5-1
TLE4276DVATMA2 FAQ
1.How can I place an order for TLE4276DVATMA2 through Aetrix?
Please submit a Request for Quotation (RFQ) for TLE4276DVATMA2 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 TLE4276DVATMA2 reliable?
The price and inventory of TLE4276DVATMA2 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for TLE4276DVATMA2 is usually 5 days.
3.What payment methods are accepted for TLE4276DVATMA2?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for TLE4276DVATMA2 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for TLE4276DVATMA2?
TLE4276DVATMA2 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your TLE4276DVATMA2 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 TLE4276DVATMA2?
For technical support, including TLE4276DVATMA2 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your TLE4276DVATMA2 requirements.
6.How does Aetrix verify that TLE4276DVATMA2 is sourced from the original manufacturer or authorized distributors?
All TLE4276DVATMA2 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 TLE4276DVATMA2 meets industry standards.
7.What is the process for return or replacement of TLE4276DVATMA2?
All TLE4276DVATMA2 units undergo pre-shipment inspection (PSI). If there is an issue with TLE4276DVATMA2, 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 TLE4276DVATMA2 part is unused and in its original packaging.
Return procedure for TLE4276DVATMA2:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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