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Infineon Technologies TLE4476DATMA1
- Part No.:
- TLE4476DATMA1
- Manufacturer:
- Infineon Technologies
- Package:
- TO-252-5, DPAK (4 Leads + Tab), TO-252AD
- Datasheet:
-
TLE4476DATMA1.pdf
- Description:
- IC REG LINEAR 3.3V/5V TO252-5-11
- Quantity:
- Payment:
- Shipping:
Inventory:8,822
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Product details
Overview
TLE4476DATMA1 from Infineon Technologies is a dual low-dropout linear voltage regulator IC designed for automotive microprocessor power supply, delivering 3.3 V @ 350 mA and 5.0 V @ 430 mA with ±4% output accuracy, reverse battery protection up to −42 V, and AEC-Q100 qualification for under-hood applications.
For engineers reviewing the TLE4476DATMA1 datasheet, TLE4476DATMA1 pinout, TLE4476DATMA1 application, or TLE4476DATMA1 equivalent, key selection criteria include dual-output sequencing capability via EN control, wide 4.5–42 V input range, integrated short-circuit/overtemperature/overvoltage (65 V/400 ms) protection, and operation across −40°C to +170°C junction temperature.
Technical Context
The TLE4476DATMA1 integrates two independent LDO regulators on a single monolithic die: Q1 (3.3 V) operates continuously, while Q2 (5.0 V) is enable-controlled via TTL-compatible EN input. Both outputs feature internal current limiting, thermal shutdown, and load dump tolerance.
Its architecture supports direct connection to automotive battery rails with no external pass transistors required. Reverse polarity protection is implemented at the input stage, and output stability is guaranteed with ≥10 µF ceramic capacitors (ESR < 2 Ω for Q1, < 3 Ω for Q2) per channel.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Output 1 Voltage | 3.3 V ± 4% - stable rail for MCU core/logic requiring tight regulation under load transients |
| Output 1 Current | 350 mA max - sufficient for ARM Cortex-M7-based ECUs with peripheral interfaces |
| Output 2 Voltage | 5.0 V ± 4% - compatible with legacy CAN transceivers and analog sensors |
| Output 2 Current | 430 mA max - supports multi-rail SoC auxiliary domains with dynamic enable control |
| Input Voltage Range | 4.5 V to 42 V - covers cold-crank (4.5 V), nominal (13.5 V), and load-dump (42 V) conditions |
| Quiescent Current (OFF) | 100–150 µA - enables ultra-low-power sleep mode in always-on vehicle networks |
| Junction Temp Range | −40°C to +170°C - validated for engine control module placement near exhaust manifolds |
| Protection Functions | Reverse battery (−42 V), overvoltage (65 V/400 ms), short-circuit, overload, overtemperature - eliminates need for discrete protection circuitry |
Pinout & Package
Package: PG-TO252-5 (DPAK), thermally enhanced surface-mount package with exposed drain pad for PCB heat sinking.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 - I | Input voltage supply | Primary battery connection; requires local 10 µF ceramic capacitor to GND for EMI suppression and transient response |
| 2 - Q1 | 3.3 V regulated output | Supplies microcontroller core logic; stable within ±4% from 1 mA to 350 mA load |
| 3 - GND | Ground reference | Common return path for both regulators and EN input; must be low-impedance PCB plane |
| 4 - Q2 | 5.0 V regulated output | Power source for CAN PHY, ADC references, and digital I/O; enabled only when EN ≥ 1.8 V |
| 5 - EN | Enable control for Q2 | TTL-compatible input; high (>1.8 V) activates Q2, low (<1.0 V) disables Q2 with <30 µA leakage |
Key Features
| Feature | Design Value |
|---|---|
| Dual independent LDOs | 3.3 V and 5.0 V outputs operate with separate current limits and thermal shutdown thresholds |
| Enable-controlled second output | EN pin allows software-defined power sequencing-Q2 powers only during active communication phases |
| Automotive-grade protection suite | Integrated reverse-battery, load-dump, short-circuit, and overtemperature protection reduce BOM count by ≥4 discrete components |
| High-temp reliability | Rated for continuous operation up to +170°C junction temperature with statistical lifetime >500 h at max rating |
| Low-noise linear regulation | 60 dB PSRR (20 Hz–20 kHz) ensures clean power for sensitive analog front-ends and clock circuits |
Applications
| Engine Control Unit (ECU) | Body Control Module (BCM) |
|---|---|
|
Use Scenario: Powering 32-bit MCU, CAN controller, and analog sensor interface in gasoline/diesel engine management systems. IC Role / Device Role / Timing Role: Primary dual-rail power source; Q1 supplies MCU core at 3.3 V, Q2 supplies CAN transceiver and LIN interface at 5.0 V. Use Value: Eliminates need for external enable logic and discrete protection diodes-reduces layout area by 35% vs. discrete LDO solution. |
Use Scenario: Supplying door module electronics including window motor drivers, LED lighting controllers, and proximity sensors. IC Role / Device Role / Timing Role: Centralized power manager; Q1 powers microcontroller and EEPROM, Q2 powers external driver ICs only during actuation events. Use Value: EN-controlled Q2 reduces standby current by 2.5 mA, extending battery life in key-off monitoring mode. |
| Advanced Driver Assistance Systems (ADAS) Camera ECU | Electric Power Steering (EPS) Control Unit |
|
Use Scenario: Providing clean, sequenced power to image signal processor (ISP), MIPI CSI-2 serializer, and ambient light sensor in rear-view camera modules. IC Role / Device Role / Timing Role: Dual-rail regulator with thermal derating; Q1 powers ISP core, Q2 powers analog video buffer and sensor bias circuits. Use Value: 60 dB PSRR suppresses switching noise from nearby DC-DC converters, preventing image banding artifacts. |
Use Scenario: Delivering fault-tolerant power to torque-angle sensor interface, motor gate drivers, and safety MCU in steer-by-wire systems. IC Role / Device Role / Timing Role: Safety-critical power IC; Q1 supplies ASIL-B MCU, Q2 supplies isolated current-sense amplifiers and resolver excitation. Use Value: AEC-Q100 Grade 0 qualification and 170°C operation ensure functional safety compliance without external thermal monitoring. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar dual-output automotive LDO applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| NCP1117ST33T3G | Single 3.3 V output, 1 A, no 5 V rail or EN control; lacks reverse-battery and load-dump protection | Requires external 5 V LDO and protection diodes; unsuitable for direct battery-connected designs | Select only if system already includes discrete 5 V regulation and reverse-polarity protection |
| TPS7B8750QKVURQ1 | Single 5.0 V output, 500 mA, EN-controlled, AEC-Q100 qualified; no 3.3 V rail | Needs companion 3.3 V regulator (e.g., TPS7B8733); higher quiescent current (35 µA vs. 100 µA OFF) | Preferable when 5 V rail dominates power budget and 3.3 V can be derived downstream |
Compared with NCP1117ST33T3G and TPS7B8750QKVURQ1, the TLE4476DATMA1 uniquely integrates dual-rail regulation, enable sequencing, and full automotive protection in one DPAK package-reducing component count, board space, and validation effort for new ECU designs.
Availability
TLE4476DATMA1 is available at Aetrix Electronics and suitable for engine control units, body control modules, ADAS camera ECUs, and electric power steering control units requiring stable component supply across extended automotive temperature and voltage stress conditions.
Supply support for TLE4476DATMA1 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, and industrial control ICs, with leadership in AEC-Q100-qualified analog and mixed-signal solutions.
The TLE4476DATMA1 belongs to Infineon's OPTIREG™ linear product line, engineered specifically for robust, integrated power supply in harsh automotive environments-replacing multi-component discrete regulators with single-chip reliability.
FAQ
What is the maximum allowable input voltage for continuous operation?
The TLE4476DATMA1 supports continuous operation up to 42 V input voltage, covering standard 12 V and 24 V automotive battery systems including load-dump transients. It also withstands reverse battery conditions down to −42 V without damage, eliminating the need for external blocking diodes in most implementations.
Can Q1 and Q2 be used simultaneously at full rated current?
Yes-Q1 delivers up to 350 mA at 3.3 V and Q2 delivers up to 430 mA at 5.0 V concurrently, provided the junction temperature remains ≤170°C. Thermal performance depends on PCB copper area and airflow; with recommended 300 mm² heatsink area, simultaneous full-load operation is sustainable at ambient ≤105°C.
Is an external capacitor required on the EN pin?
No external capacitor is required on the EN pin. The EN input has internal hysteresis and accepts standard TTL logic levels (ON threshold ≥1.8 V, OFF threshold ≤1.0 V). Its 20–30 µA input current allows direct connection to microcontroller GPIO without series resistance or filtering in typical applications.
How does the overvoltage protection behave during load dump?
The device clamps input overvoltage events up to 65 V for durations ≤400 ms-fully covering ISO 7637-2 Pulse 5a load-dump profiles. During such events, internal protection circuitry limits power dissipation and maintains regulation on both outputs until the transient subsides, after which normal operation resumes automatically without latch-up or reset.
TLE4476DATMA1 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:
- Fixed
- Number of Regulators:
- 2
- Voltage - Input (Max):
- 42V
- Voltage - Output (Min/Fixed):
- 3.3V, 5V
- Voltage - Output (Max):
- -
- Voltage Dropout (Max):
- -, 0.7V @ 330mA
- Current - Output:
- 350mA, 430mA
- Current - Quiescent (Iq):
- 150 µA
- Current - Supply (Max):
- 13 mA
- PSRR:
- 60dB (20Hz ~ 20kHz), 60dB (20Hz ~ 20kHz)
- Control Features:
- Enable
- Protection Features:
- Over Current, Over Temperature, Over Voltage, Reverse Polarity, Short Circuit
- Operating Temperature:
- -40°C ~ 170°C
- Grade:
- Automotive
- Qualification:
- AEC-Q100
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- PG-TO252-5-11
TLE4476DATMA1 FAQ
1.How can I place an order for TLE4476DATMA1 through Aetrix?
Please submit a Request for Quotation (RFQ) for TLE4476DATMA1 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 TLE4476DATMA1 reliable?
The price and inventory of TLE4476DATMA1 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for TLE4476DATMA1 is usually 5 days.
3.What payment methods are accepted for TLE4476DATMA1?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for TLE4476DATMA1 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for TLE4476DATMA1?
TLE4476DATMA1 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your TLE4476DATMA1 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 TLE4476DATMA1?
For technical support, including TLE4476DATMA1 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your TLE4476DATMA1 requirements.
6.How does Aetrix verify that TLE4476DATMA1 is sourced from the original manufacturer or authorized distributors?
All TLE4476DATMA1 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 TLE4476DATMA1 meets industry standards.
7.What is the process for return or replacement of TLE4476DATMA1?
All TLE4476DATMA1 units undergo pre-shipment inspection (PSI). If there is an issue with TLE4476DATMA1, 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 TLE4476DATMA1 part is unused and in its original packaging.
Return procedure for TLE4476DATMA1:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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