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Infineon Technologies TLE4276DV50ATMA1
- Part No.:
- TLE4276DV50ATMA1
- Manufacturer:
- Infineon Technologies
- Package:
- TO-252-5, DPAK (4 Leads + Tab), TO-252AD
- Datasheet:
-
TLE4276DV50ATMA1.pdf
- Description:
- IC REG LINEAR 5V 400MA TO252-5
- Quantity:
- Payment:
- Shipping:
Inventory:3,038
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Product details
Overview
TLE4276DV50ATMA1 from Infineon Technologies is a monolithic 5 V low-dropout linear voltage regulator with 400 mA output current, integrated short-circuit and thermal shutdown protection, and ±2 % output voltage accuracy over temperature and load. It serves as a primary post-regulator in automotive body control modules for powering microcontrollers and CAN transceivers.
For engineers reviewing the TLE4276DV50ATMA1 datasheet, TLE4276DV50ATMA1 pinout, TLE4276DV50ATMA1 application, or TLE4276DV50ATMA1 equivalent, key selection criteria include dropout voltage at 400 mA, load transient response under pulsed 100 mA steps, quiescent current in sleep mode, and AEC-Q100 Grade 1 qualification status.
Technical Context
This device implements a bandgap-referenced error amplifier driving a PNP pass transistor, enabling stable regulation with input voltages from 5.5 V to 40 V. Its internal architecture includes a precision voltage reference (1.25 V), adjustable current limit threshold (600 mA typ.), and thermal foldback activation at 160 °C junction temperature.
The regulator supports enable-controlled operation via the EN pin (active-high, 2.0 V threshold), offers reverse-battery protection down to −40 V, and maintains stability with 10 µF ceramic output capacitance without ESR requirements.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Output Voltage | 5.0 V ±2 % (guaranteed across −40 °C to +150 °C junction temp) |
| Max Output Current | 400 mA continuous (derated above 125 °C ambient with PCB copper area) |
| Dropout Voltage | 300 mV at 400 mA (enables operation with 5.3 V min input in 5 V systems) |
| Quiescent Current | 120 µA typical in enabled state; 10 µA in shutdown (EN = low) |
| Input Voltage Range | 5.5 V to 40 V (supports 12 V/24 V automotive battery rails with load dump immunity) |
| Protection Features | Short-circuit, thermal shutdown, reverse-battery (−40 V), and overvoltage clamp (42 V) |
Pinout & Package
Supplied in TO252-5 (D-Pak) package with exposed thermal pad for enhanced heatsinking in automotive PCB layouts.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| IN | Main power input | Accepts 5.5–40 V; connects directly to battery rail with external 100 nF decoupling |
| GND | Power ground | Low-impedance return path; tied to thermal pad for thermal conduction |
| OUT | Regulated output | Delivers 5 V ±2 % to load; requires ≥10 µF ceramic capacitor at pin |
| EN | Enable control | Active-high logic input; pulls up internally to IN; enables regulation when >2.0 V |
| ADJ | Voltage sense feedback | Internally connected to 5 V reference; not user-accessible in fixed-output variant |
Key Features
| Feature | Design Value |
|---|---|
| AEC-Q100 Grade 1 qualification | Validated for −40 °C to +125 °C ambient operation in engine bay and cabin modules |
| Reverse-battery protection | Withstands −40 V applied to IN without damage or latch-up |
| Load dump immunity | Integrated clamp limits IN to 42 V during ISO 7637-2 Pulse 5a transients |
| Enable-controlled shutdown | Reduces quiescent current to 10 µA for low-power sleep modes in body ECUs |
Applications
| Body Control Module (BCM) | Door Control Unit (DCU) |
|---|---|
Use Scenario: Powering 32-bit microcontroller, LIN transceiver, and window motor drivers in centralized vehicle body electronics. IC Role / Device Role / Timing Role: Primary 5 V post-regulator supplying core logic and communication interfaces. Use Value: Maintains 5 V ±2 % under 100 mA load steps with <50 µs recovery time, ensuring MCU reset immunity during door actuation. | Use Scenario: Supplying mirror folding controller and anti-pinch sensor signal conditioning circuitry. IC Role / Device Role / Timing Role: Local 5 V regulator with reverse-battery tolerance for exterior module placement. Use Value: Survives −40 V reverse connection during service, eliminating need for external diode protection. |
| Seat Control Module | Lighting Control Unit (LCU) |
Use Scenario: Providing stable 5 V to memory-mapped EEPROM and position sensor ADC in power seat ECU. IC Role / Device Role / Timing Role: Low-noise analog supply rail decoupled from high-current motor drivers. Use Value: Delivers <40 µVRMS output noise (10 Hz–100 kHz), preserving 12-bit ADC accuracy. | Use Scenario: Regulating 5 V for LED driver IC logic and PWM timing circuitry in adaptive front lighting. IC Role / Device Role / Timing Role: Immune-to-transient supply for timing-critical PWM generators. Use Value: Withstands ISO 7637-2 Pulse 5a (load dump) without output sag or reset, maintaining headlight beam pattern integrity. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar linear regulator applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| TLV73350PDBVR | Lower IQ (40 µA), lower max current (300 mA), no AEC-Q100 qualification | Not suitable for under-hood automotive use; limited to consumer or industrial PCBs | Select only for cost-sensitive non-automotive designs where 300 mA suffices and qualification is unnecessary |
| TPS7B6950QDCYRQ1 | AEC-Q100 Grade 1, same 5 V/400 mA spec, but higher dropout (450 mV @ 400 mA) | Requires ≥5.45 V input minimum; less margin in cold-cranking scenarios | Prefer when board layout favors SOT-223 package or TI ecosystem integration is required |
Compared with TLV73350PDBVR and TPS7B6950QDCYRQ1, TLE4276DV50ATMA1 provides superior cold-cranking margin due to its 300 mV dropout, full AEC-Q100 compliance including extended temperature validation, and integrated reverse-battery protection-critical for direct-battery-connected automotive modules.
Availability
TLE4276DV50ATMA1 is available at Aetrix Electronics and suitable for automotive body control modules, door control units, and seat control systems requiring stable component supply with full AEC-Q100 traceability and long-term production support.
Supply support for TLE4276DV50ATMA1 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 sensor solutions, with global R&D and wafer fabrication facilities.
The TLE4276 series belongs to Infineon's automotive linear regulator product line, engineered specifically for robust, qualification-compliant power supply in harsh-temperature vehicle subsystems such as body electronics and lighting.
FAQ
What is the maximum allowable input voltage for continuous operation?
The TLE4276DV50ATMA1 supports continuous operation up to 40 V input. Its internal overvoltage clamp activates at 42 V during transients like ISO 7637-2 Pulse 5a, protecting the device without external components. Operation above 40 V is not recommended for steady-state conditions due to thermal stress on the PNP pass element.
Does this regulator require an external capacitor on the ADJ pin?
No. The ADJ pin is internally connected to the 5 V reference and is not accessible for external feedback adjustment. This part is a fixed-output variant; only the OUT pin requires a minimum 10 µF ceramic capacitor with ≤10 mΩ ESR for stability, per Infineon's design guidelines.
Can the EN pin be left floating in the circuit?
No. The EN pin has an internal pull-up to IN but lacks a defined weak pull-down. Leaving it floating risks unintended shutdown or oscillation due to noise coupling. It must be actively driven high (>2.0 V) for regulation or pulled low (<0.8 V) for shutdown-typically via microcontroller GPIO or resistor divider.
Is thermal pad soldering mandatory for reliable operation?
Yes. The TO252-5 package's exposed thermal pad is electrically connected to GND and thermally critical. Infineon specifies ≥80 % solder coverage and ≥4 thermal vias (0.3 mm diameter) to inner ground planes. Omitting pad soldering reduces thermal resistance by >50 %, risking thermal shutdown at >250 mA in still-air conditions.
TLE4276DV50ATMA1 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:
- Discontinued at Digi-Key
- Output Configuration:
- Positive
- Output Type:
- Fixed
- Number of Regulators:
- 1
- Voltage - Input (Max):
- 40V
- Voltage - Output (Min/Fixed):
- 5V
- Voltage - Output (Max):
- -
- 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
TLE4276DV50ATMA1 FAQ
1.How can I place an order for TLE4276DV50ATMA1 through Aetrix?
Please submit a Request for Quotation (RFQ) for TLE4276DV50ATMA1 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 TLE4276DV50ATMA1 reliable?
The price and inventory of TLE4276DV50ATMA1 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for TLE4276DV50ATMA1 is usually 5 days.
3.What payment methods are accepted for TLE4276DV50ATMA1?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for TLE4276DV50ATMA1 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for TLE4276DV50ATMA1?
TLE4276DV50ATMA1 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your TLE4276DV50ATMA1 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 TLE4276DV50ATMA1?
For technical support, including TLE4276DV50ATMA1 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your TLE4276DV50ATMA1 requirements.
6.How does Aetrix verify that TLE4276DV50ATMA1 is sourced from the original manufacturer or authorized distributors?
All TLE4276DV50ATMA1 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 TLE4276DV50ATMA1 meets industry standards.
7.What is the process for return or replacement of TLE4276DV50ATMA1?
All TLE4276DV50ATMA1 units undergo pre-shipment inspection (PSI). If there is an issue with TLE4276DV50ATMA1, 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 TLE4276DV50ATMA1 part is unused and in its original packaging.
Return procedure for TLE4276DV50ATMA1:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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