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Infineon Technologies TLE4274DV50T
- Part No.:
- TLE4274DV50T
- Manufacturer:
- Infineon Technologies
- Package:
- TO-252-3, DPAK (2 Leads + Tab), SC-63
- Datasheet:
-
TLE4274DV50T.pdf
- Description:
- IC REG LINEAR 5V 400MA TO252-3
- Quantity:
- Payment:
- Shipping:
Inventory:4,501
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Product details
Overview
TLE4274DV50T from Infineon Technologies is a low-dropout linear voltage regulator delivering a fixed 5.0 V output with ±4% tolerance, rated for 400 mA continuous load current, operating from 5.5 V to 40 V input, and housed in PG-TO252-3-11 (DPAK) package. It integrates short-circuit, reverse-polarity, and thermal shutdown protection, and is AEC-Q100 qualified for automotive power rail conditioning.
For engineers reviewing the TLE4274DV50T datasheet, TLE4274DV50T pinout, TLE4274DV50T application, or TLE4274DV50T equivalent, key selection criteria include dropout voltage ≤500 mV at 250 mA, quiescent current ≤30 µA at full load, ESR-stable operation with ≥22 µF output capacitance, and junction temperature range of –40 °C to +150 °C.
Technical Context
The TLE4274DV50T uses a bandgap-referenced control amplifier driving a series pass transistor with saturation control to prevent oversaturation under high load. Its internal protection circuitry includes foldback current limiting, thermal shutdown activation at ~150 °C, and reverse-polarity blocking via integrated diode structure.
Stability is achieved with a minimum 22 µF output capacitor having ESR ≤3 Ω across –40 °C to +150 °C; input decoupling requires ≥100 nF ceramic capacitor placed directly at Pin 1. The device operates without external compensation components.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Output Voltage | 5.0 V ±4% - ensures stable MCU/Sensor supply within automotive 5 V logic tolerance bands |
| Max Output Current | 400 mA - supports multiple downstream ICs (e.g., CAN transceivers + microcontroller core) |
| Dropout Voltage | ≤500 mV at 250 mA - enables regulation from 6.0 V input, critical for cold-crank battery scenarios |
| Quiescent Current | ≤30 µA at IQ = 400 mA - minimizes standby power loss in always-on vehicle modules |
| Input Voltage Range | 5.5 V to 40 V - accommodates 12 V automotive system transients including load dump (up to 40 V) |
| Thermal Shutdown | Activates at Tj ≈ 150 °C - protects against sustained overload or poor heatsinking |
| ESR Stability Limit | ≤3 Ω - defines maximum allowable output capacitor ESR for guaranteed loop stability |
Pinout & Package
Package: PG-TO252-3-11 (DPAK), RoHS-compliant, surface-mount, with exposed thermal pad (AEP) for enhanced PCB heat dissipation. Thermal resistance RthJA = 78 K/W (zero airflow, 80 × 80 mm² PCB).
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 (I) | Input | Unregulated input supply; must be decoupled with ≥100 nF ceramic capacitor placed directly at pin |
| 2 (GND) | Ground Reference | Common return path for control circuitry and power stage; connects to thermal pad for optimal heat transfer |
| 3 (Q) | Regulated Output | 5.0 V regulated rail; requires ≥22 µF output capacitor with ESR ≤3 Ω for stability across full temperature range |
Key Features
| Feature | Design Value |
|---|---|
| AEC-Q100 Qualified | Grade 1 (–40 °C to +125 °C ambient) - validated for engine bay and body control module deployment |
| Reverse Polarity Protection | Withstands –42 V input - eliminates need for external blocking diode in battery-connected applications |
| Short-Circuit Proof | Foldback current limiting with auto-recovery - sustains indefinite short without latch-up or damage |
| Low Quiescent Current | ≤8 µA at 1 mA load - enables <10 µW standby power in sleep-mode vehicle networks |
| Green Product | RoHS-compliant, halogen-free, lead-free - meets automotive environmental compliance requirements |
Applications
| Body Control Module (BCM) | Engine Control Unit (ECU) Sensor Supply |
|---|---|
Use Scenario: Powering LIN transceivers, door lock actuators, and interior lighting drivers in low-voltage vehicle domains. IC Role / Device Role / Timing Role: Primary 5 V LDO supplying logic-level peripherals from 12 V battery rail. Use Value: Maintains regulation during cold-crank (down to 5.5 V input) and rejects battery ripple >60 dB at 100 Hz. | Use Scenario: Providing clean, stable 5 V bias to oxygen sensors, MAP sensors, and crankshaft position sensors. IC Role / Device Role / Timing Role: Precision analog supply rail with low noise and minimal load/line regulation drift. Use Value: Output voltage drift ≤0.5 mV/K ensures sensor accuracy over full engine temperature range. |
| Advanced Driver Assistance Systems (ADAS) Camera Module | Infotainment System Microcontroller Core |
Use Scenario: Regulating power to image signal processors and serializer ICs in rear-view cameras. IC Role / Device Role / Timing Role: Secondary 5 V regulator isolated from noisy main power domain. Use Value: Reverse-polarity and short-circuit robustness prevents field failure due to wiring errors or ESD events. | Use Scenario: Supplying 5 V core voltage to ARM-based application processors during boot and active states. IC Role / Device Role / Timing Role: High-current, thermally managed LDO supporting burst-mode processor loads. Use Value: 400 mA capability with thermal shutdown avoids brownouts during CPU-intensive tasks. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar fixed-output LDO regulator applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| TLV73350PDBVR | Lower IQ (5 µA typ), lower max current (300 mA), SOT-23-5 package, no reverse polarity protection | Suitable for space-constrained non-automotive applications; lacks AEC-Q100 qualification and fault robustness | Select only if footprint and ultra-low IQ outweigh automotive reliability requirements |
| TPS7B6950QDCYRQ1 | AEC-Q100 Grade 1, 5 V output, 400 mA, 300 mV dropout at 250 mA, but higher IQ (45 µA at full load) | Same automotive qualification level; optimized for lower dropout but consumes more quiescent power | Prefer when cold-crank margin is tighter than standby power budget |
Compared with TLV73350PDBVR and TPS7B6950QDCYRQ1, the TLE4274DV50T uniquely combines reverse-polarity immunity, foldback short-circuit protection, and proven thermal robustness in DPAK - making it the only choice where wiring fault resilience and sustained high-temp operation are mandatory.
Availability
TLE4274DV50T is available at Aetrix Electronics and suitable for Body Control Modules, Engine Control Units, ADAS camera systems, and infotainment head units requiring stable component supply under automotive-grade lifecycle and environmental conditions.
Supply support for TLE4274DV50T 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 manufacturing and automotive qualification infrastructure.
The TLE4274 series belongs to Infineon's automotive linear regulator product line, designed specifically for robust, fault-tolerant power conditioning in 12 V vehicle electrical systems.
FAQ
What is the minimum input voltage required for regulation at full 400 mA load?
The TLE4274DV50T requires a minimum input voltage of 5.5 V to maintain 5.0 V output regulation at 400 mA load, per datasheet Table 3. This corresponds to a maximum dropout of 500 mV, verified across –40 °C to +150 °C junction temperature.
Can the TLE4274DV50T replace the TLE4274V50 in an existing TO-220 design?
No - although both deliver 5.0 V, the TLE4274DV50T uses PG-TO252-3-11 (DPAK) while TLE4274V50 uses PG-TO220-3-1. Package dimensions, thermal pad layout, and mounting holes differ; PCB redesign and requalification are required for substitution.
Is an external capacitor required on the input pin, and what value is recommended?
Yes - a ceramic capacitor ≥100 nF must be placed directly between Pin 1 (I) and Pin 2 (GND). This suppresses high-frequency noise and damps LC oscillations caused by input trace inductance; placement within 2 mm of the IC is critical for effectiveness.
Does the TLE4274DV50T require an output capacitor, and what are its specifications?
Yes - a minimum 22 µF output capacitor with ESR ≤3 Ω is mandatory for loop stability across –40 °C to +150 °C. Aluminum polymer or low-ESR tantalum capacitors meeting these specs ensure reliable regulation under all operating conditions.
TLE4274DV50T 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:
- 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):
- 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
TLE4274DV50T FAQ
1.How can I place an order for TLE4274DV50T through Aetrix?
Please submit a Request for Quotation (RFQ) for TLE4274DV50T 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 TLE4274DV50T reliable?
The price and inventory of TLE4274DV50T are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for TLE4274DV50T is usually 5 days.
3.What payment methods are accepted for TLE4274DV50T?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for TLE4274DV50T transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for TLE4274DV50T?
TLE4274DV50T orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your TLE4274DV50T 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 TLE4274DV50T?
For technical support, including TLE4274DV50T datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your TLE4274DV50T requirements.
6.How does Aetrix verify that TLE4274DV50T is sourced from the original manufacturer or authorized distributors?
All TLE4274DV50T 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 TLE4274DV50T meets industry standards.
7.What is the process for return or replacement of TLE4274DV50T?
All TLE4274DV50T units undergo pre-shipment inspection (PSI). If there is an issue with TLE4274DV50T, 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 TLE4274DV50T part is unused and in its original packaging.
Return procedure for TLE4274DV50T:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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