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Infineon Technologies TLE4284DV18ATMA1
- Part No.:
- TLE4284DV18ATMA1
- Manufacturer:
- Infineon Technologies
- Package:
- TO-252-3, DPAK (2 Leads + Tab), SC-63
- Datasheet:
-
TLE4284DV18ATMA1.pdf
- Description:
- IC REG LINEAR 1.8V 1A TO252-3-11
- Quantity:
- Payment:
- Shipping:
Inventory:1,419
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Product details
Overview
TLE4284DV18ATMA1 from Infineon Technologies is a monolithic NPN-type fixed-output 1.8 V automotive voltage regulator in PG-TO252-3-11 (DPAK) package, delivering up to 1.0 A output current with typical dropout voltage of 1.2 V at 500 mA, -40 °C to 150 °C junction temperature range, and integrated short-circuit and overtemperature protection - used to power microcontroller core rails in engine control units.
For engineers reviewing the TLE4284DV18ATMA1 datasheet, TLE4284DV18ATMA1 pinout, TLE4284DV18ATMA1 application, or TLE4284DV18ATMA1 equivalent, key selection criteria include fixed 1.8 V output tolerance (±2.8%), dropout behavior under 1 A load, thermal resistance with heatsink area, PSRR at 120 Hz, and AEC-Q100 qualification for under-hood deployment.
Technical Context
The TLE4284DV18ATMA1 implements a monolithic NPN pass transistor architecture with internal bandgap reference and feedback loop, enabling stable 1.8 V regulation across input voltages from 3.2 V to 40 V. Its protection circuitry includes foldback current limiting and thermal shutdown triggered at ~170 °C junction temperature.
Unlike LDOs using PMOS pass devices, this NPN-based regulator requires minimum headroom (VI − VQ ≥ 1.0 V) and exhibits higher dropout than modern CMOS LDOs but offers superior ruggedness in transient-overvoltage automotive environments - confirmed by 40 V absolute max input rating and HBM ESD rating of 4 kV.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Output Voltage | Fixed 1.8 V ±2.8% (1.75–1.85 V) over full load and temperature range - ensures compatibility with 1.8 V FPGA I/O or MCU core supplies. |
| Max Output Current | 1.0 A continuous - supports single-core automotive microcontrollers or sensor signal chains without external boost. |
| Dropout Voltage | 1.30 V max at 1.0 A load - defines minimum input voltage of 3.1 V for reliable 1.8 V regulation. |
| Input Voltage Range | 3.2 V to 40 V - accommodates cold-crank (≥4.5 V), normal operation (13.5 V), and load-dump transients (≤40 V). |
| Junction Temp Range | -40 °C to +150 °C - validated for placement near engines or transmission controllers per AEC-Q100 Grade 0. |
| PSRR | 65 dB at 120 Hz - suppresses alternator ripple before sensitive analog or clock domains. |
| Thermal Resistance | 78 K/W with 300 mm² heatsink - enables 1 A operation at 85 °C ambient when PCB copper area is properly allocated. |
Pinout & Package
Package: PG-TO252-3-11 (DPAK), surface-mount, thermally enhanced with exposed tab connected to Pin 2 (Q/Output) for heatsinking.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 | GND | Ground reference for internal bias and feedback; must be low-impedance connection to minimize noise coupling. |
| 2, Tab | Q (Output) | Main regulated 1.8 V output; tab is electrically connected to Pin 2 and serves as primary thermal path to PCB copper. |
| 3 | I (Input) | Unregulated input supply; requires local 10 µF/ESR ≤10 Ω ceramic or tantalum capacitor placed within 5 mm. |
Key Features
| Feature | Design Value |
|---|---|
| AEC-Q100 Qualified | Grade 0 (−40 °C to +150 °C) qualification - meets automotive reliability and stress-test requirements for safety-critical ECUs. |
| Integrated Protection | Short-circuit foldback + thermal shutdown - prevents latch-up or destruction during wiring faults or overheating without external circuitry. |
| Low-Noise Regulation | 30 ppm RMS output noise (10 Hz–10 kHz) - avoids jitter injection into ADC references or PLL power domains. |
| Green Product | RoHS-compliant, halogen-free, lead-free - satisfies EU ELV and OEM environmental compliance mandates. |
Applications
| Engine Control Unit (ECU) Core Supply | Transmission Control Module (TCM) Sensor Interface |
|---|---|
Use Scenario: Powers 1.8 V core rail of 32-bit automotive MCU (e.g., Infineon AURIX TC3xx) in engine bay under wide temperature and load-dump conditions. IC Role / Device Role / Timing Role: Primary post-regulator delivering clean, protected 1.8 V to processor core logic and on-chip SRAM. Use Value: Maintains regulation down to 3.2 V input during cranking; thermal shutdown prevents damage during sustained 150 °C ambient exposure. | Use Scenario: Supplies 1.8 V to analog front-end (AFE) and CAN transceiver bias in automatic transmission controller mounted near gearbox. IC Role / Device Role / Timing Role: Stable low-noise bias source for precision current-sense amplifiers and isolated CAN FD PHYs. Use Value: 65 dB PSRR rejects alternator ripple; 30 ppm noise avoids gain error in 16-bit ADC measurements. |
| Body Control Module (BCM) Lighting Driver IC Bias | Advanced Driver Assistance System (ADAS) Camera Module Power |
Use Scenario: Provides 1.8 V bias to high-side LED driver ICs managing adaptive front lighting systems (AFS) in headlamp assemblies. IC Role / Device Role / Timing Role: Secondary regulated supply enabling precise PWM dimming control and fault reporting interfaces. Use Value: Foldback current limiting prevents thermal runaway during LED string open-circuit faults; 40 V input rating survives jump-start surges. | Use Scenario: Powers image signal processor (ISP) core and MIPI CSI-2 serializer in rear-view or surround-view camera modules mounted externally. IC Role / Device Role / Timing Role: Low-noise, high-reliability power rail for timing-sensitive pixel data capture and serialization. Use Value: 150 °C junction rating allows direct mounting on camera housing; 1.0 A capacity supports burst-mode ISP operation. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar fixed-output automotive voltage regulator applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| TLV73318PDBVR | PMOS LDO, 1.8 V fixed, 300 mA max, 170 mV dropout @ 300 mA, no AEC-Q100 rating | Designed for infotainment or body electronics only; not qualified for powertrain or ADAS zones | Select only for non-safety-critical interior modules where ambient < 105 °C and input < 5.5 V |
| NCP1117ST18T3G | NPN regulator, 1.8 V fixed, 1.0 A, 1.2 V dropout @ 1 A, AEC-Q100 Grade 2 (−40 °C to +105 °C), no load-dump rating | Limited to cabin or chassis modules; lacks 40 V input rating and Grade 0 thermal capability | Acceptable for HVAC or seat control where peak ambient ≤ 105 °C and no load-dump exposure |
Compared with TLV73318PDBVR and NCP1117ST18T3G, the TLE4284DV18ATMA1 uniquely combines Grade 0 AEC-Q100 qualification, 40 V input tolerance, and 150 °C operation - making it the only viable choice for under-hood ECU and transmission controller core supplies requiring functional safety alignment.
Availability
TLE4284DV18ATMA1 is available at Aetrix Electronics and suitable for engine control units, transmission control modules, body control modules, and ADAS camera modules requiring stable component supply under automotive-grade lifecycle and environmental constraints.
Supply support for TLE4284DV18ATMA1 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 industrial gate drivers, with global manufacturing and automotive qualification infrastructure.
The TLE4284 belongs to Infineon's TLE family of high-voltage linear regulators designed specifically for demanding automotive power-supply applications - emphasizing robustness, thermal resilience, and system-level fault containment.
FAQ
Is TLE4284DV18ATMA1 pin-compatible with other TLE4284 variants like DV15 or DV33?
Yes - all TLE4284 fixed-output variants (DV15, DV18, DV26, DV33, DV50) share identical PG-TO252-3-11 pinout (GND–Q–I) and thermal pad layout. Only the output voltage differs; no PCB redesign is needed when switching between them, provided input/output capacitors meet respective stability requirements.
What is the minimum input voltage required for regulation at full 1.0 A load?
The minimum input voltage is calculated as VQ + VDR(max). For TLE4284DV18ATMA1, VQ = 1.8 V and VDR(max) = 1.40 V at 1.0 A, yielding 3.2 V minimum. This is verified in Table 7 (VI ≥ 3.2 V for guaranteed regulation at 10 mA–1.0 A load).
Does TLE4284DV18ATMA1 require an external capacitor on the output, and what type is recommended?
Yes - a minimum 10 µF output capacitor with ESR ≤10 Ω is mandatory for stability and transient response. Tantalum or low-ESR aluminum polymer capacitors are preferred; ceramic capacitors may be used if series resistance ≥5 Ω is added to ensure phase margin.
Can TLE4284DV18ATMA1 be used in adjustable-output configuration?
No - the DV18 variant is factory-trimmed for fixed 1.8 V output and lacks the ADJ pin. Only the base TLE4284 (no suffix) or "DV" (adjustable) version provides the ADJ terminal and internal reference for external resistor-divider programming.
TLE4284DV18ATMA1 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:
- Obsolete
- Output Configuration:
- Positive
- Output Type:
- Fixed
- Number of Regulators:
- 1
- Voltage - Input (Max):
- 40V
- Voltage - Output (Min/Fixed):
- 1.8V
- Voltage - Output (Max):
- -
- Voltage Dropout (Max):
- 1.4V @ 1A
- Current - Output:
- 1A
- Current - Quiescent (Iq):
- 1.6 mA
- Current - Supply (Max):
- -
- PSRR:
- 65dB (120Hz)
- Control Features:
- -
- Protection Features:
- Over Current, Over Temperature, Short Circuit
- Operating Temperature:
- -40°C ~ 150°C
- Grade:
- Automotive
- Qualification:
- AEC-Q100
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- PG-TO252-3-11
TLE4284DV18ATMA1 FAQ
1.How can I place an order for TLE4284DV18ATMA1 through Aetrix?
Please submit a Request for Quotation (RFQ) for TLE4284DV18ATMA1 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 TLE4284DV18ATMA1 reliable?
The price and inventory of TLE4284DV18ATMA1 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for TLE4284DV18ATMA1 is usually 5 days.
3.What payment methods are accepted for TLE4284DV18ATMA1?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for TLE4284DV18ATMA1 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for TLE4284DV18ATMA1?
TLE4284DV18ATMA1 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your TLE4284DV18ATMA1 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 TLE4284DV18ATMA1?
For technical support, including TLE4284DV18ATMA1 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your TLE4284DV18ATMA1 requirements.
6.How does Aetrix verify that TLE4284DV18ATMA1 is sourced from the original manufacturer or authorized distributors?
All TLE4284DV18ATMA1 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 TLE4284DV18ATMA1 meets industry standards.
7.What is the process for return or replacement of TLE4284DV18ATMA1?
All TLE4284DV18ATMA1 units undergo pre-shipment inspection (PSI). If there is an issue with TLE4284DV18ATMA1, 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 TLE4284DV18ATMA1 part is unused and in its original packaging.
Return procedure for TLE4284DV18ATMA1:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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