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Infineon Technologies TLE4284DVATMA1
- Part No.:
- TLE4284DVATMA1
- Manufacturer:
- Infineon Technologies
- Package:
- TO-252-3, DPAK (2 Leads + Tab), SC-63
- Datasheet:
-
TLE4284DVATMA1.pdf
- Description:
- IC REG LIN POS ADJ 1A TO252-3-11
- Quantity:
- Payment:
- Shipping:
Inventory:2,297
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Product details
Overview
TLE4284DVATMA1 from Infineon Technologies is a monolithic NPN-type adjustable-output linear voltage regulator in PG-TO252-3-11 (DPAK) package, delivering up to 1.0 A output current with typical dropout voltage of 1.0–1.4 V across load range, operating from input voltages up to 40 V, and qualified for automotive applications per AEC-Q100.
For engineers reviewing the TLE4284DVATMA1 datasheet, TLE4284DVATMA1 pinout, TLE4284DVATMA1 application, or TLE4284DVATMA1 equivalent, key selection criteria include adjustable output via external resistor divider, -40 °C to 150 °C junction temperature operation, short-circuit/overtemperature protection, low-noise (30 ppm RMS), and PSRR of 65 dB at 120 Hz - critical for ECU power rail stability.
Technical Context
The TLE4284DVATMA1 implements an internal bandgap reference (1.20–1.30 V) and NPN pass transistor architecture enabling adjustable output voltage via external ADJ pin voltage divider. Its control loop maintains regulation under wide input variation (VI – VQ = 3–40 V) and load current (10 mA–1.0 A).
Protection circuitry includes foldback current limiting (1000–2200 mA trip), thermal shutdown at ~170 °C junction, and short-circuit detection with automatic recovery. Dropout voltage increases predictably with load: 1.00 V @ 100 mA, 1.40 V @ 1.0 A.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Output Current | 1.0 A max - supports high-current microcontroller cores or sensor clusters without external boost stages. |
| Dropout Voltage | 1.00–1.40 V - enables stable 3.3 V or 5.0 V regulation from 12 V automotive battery even during cold-crank dips. |
| Input Voltage Range | Up to 40 V - withstands load-dump transients per ISO 7637-2 without external clamping. |
| Junction Temp Range | -40 °C to +150 °C - meets under-hood automotive thermal requirements without derating. |
| Reference Voltage | 1.25 V typ - sets precision output via external resistive divider (e.g., 3.3 V = 1.25 × (1 + R1/R2)). |
| PSRR | 65 dB @ 120 Hz - suppresses alternator ripple on main supply rail to protect analog peripherals. |
| RMS Output Noise | 30 ppm of VQ - <100 µV noise at 3.3 V output, suitable for ADC reference or low-noise analog circuits. |
Pinout & Package
Package: PG-TO252-3-11 (DPAK), surface-mount, thermally enhanced with exposed tab connected to Q (output) for heatsink mounting.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 (ADJ) | Adjust reference node | Connects to center tap of external resistor divider; sets output voltage as VQ = VREF × (1 + R1/R2); draws ≤120 µA. |
| 2 & Tab (Q) | Regulated output / thermal path | Delivers regulated voltage; tab must be soldered to PCB copper pour ≥300 mm² for RthJA ≤78 K/W. |
| 3 (I) | Unregulated input | Accepts 3–40 V input; requires local 10 µF/ESR ≤10 Ω ceramic or tantalum capacitor. |
Key Features
| Feature | Design Value |
|---|---|
| AEC-Q100 qualified | Qualified for automotive Grade 0 (-40 °C to +150 °C), enabling use in engine control units and body controllers without additional qualification. |
| Integrated protection | Self-resetting overcurrent foldback and thermal shutdown prevent latch-up during fault conditions, eliminating need for external reset logic. |
| Low-noise regulation | 30 ppm RMS noise and 65 dB PSRR ensure clean power for CAN transceivers and precision analog sensors. |
| Wide input tolerance | Operates with input as low as VQ + VDR (e.g., 4.3 V for 3.3 V output), supporting start-stop system voltage sag. |
| Adjustable output | Configurable from ~1.25 V to 35 V using two external resistors - eliminates inventory of multiple fixed-voltage variants. |
Applications
| Engine Control Unit (ECU) | Advanced Driver Assistance Systems (ADAS) |
|---|---|
Use Scenario: Powering 32-bit MCU core and CAN FD interface in gasoline/diesel engine management systems. IC Role / Device Role / Timing Role: Primary 3.3 V LDO supplying processor I/O and communication peripherals. Use Value: Maintains regulation during 6 V cold-crank events (via 1.0 V dropout headroom) and rejects alternator ripple (65 dB PSRR) to prevent CAN bus errors. | Use Scenario: Supplying radar SoC and image signal processor in front-facing collision avoidance modules. IC Role / Device Role / Timing Role: Low-noise 1.8 V bias rail for RF front-end and ADC reference. Use Value: 30 ppm RMS noise ensures <1 LSB error in 12-bit radar ADC; -40 °C to 150 °C operation survives hood-mounted placement. |
| Body Control Module (BCM) | Electric Power Steering (EPS) |
Use Scenario: Regulating 5.0 V for LIN transceivers, door lock actuators, and ambient light sensors. IC Role / Device Role / Timing Role: Secondary LDO fed from main 12 V rail, providing isolated, protected 5.0 V domain. Use Value: Short-circuit protection prevents bus failure when driving inductive loads; 40 V max input handles load-dump transients. | Use Scenario: Powering torque-sensing ASIC and motor gate driver logic in steer-by-wire systems. IC Role / Device Role / Timing Role: Safety-critical 5.0 V supply with dual-redundant monitoring paths. Use Value: Overtemperature shutdown halts operation before MOSFET driver thermal runaway; AEC-Q100 Grade 0 ensures functional safety compliance. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar adjustable linear regulator applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| TLV1117LV33DCYR | Fixed 3.3 V output only; 800 mA max; 0.6 V dropout; no ADJ pin. | Lacks adjustability and automotive temp rating (–40 °C to 125 °C only). | Select only if fixed 3.3 V and lower current suffice; not drop-in for adjustable designs. |
| NCP1117DT33T5G | Fixed 3.3 V; 1.0 A; 1.2 V dropout; TO-252 package; AEC-Q100 Grade 2 (–40 °C to 105 °C). | Lower max junction temperature limits use in high-ambient zones like engine bay. | Acceptable for non-critical body electronics but not for ECU or EPS where 150 °C operation is mandatory. |
Compared with TLV1117LV33DCYR and NCP1117DT33T5G, the TLE4284DVATMA1 uniquely combines adjustability, 150 °C operation, and integrated fault protection - making it irreplaceable in safety-critical automotive power domains requiring design flexibility and thermal robustness.
Availability
TLE4284DVATMA1 is available at Aetrix Electronics and suitable for engine control units, ADAS radar modules, body control modules, and electric power steering systems requiring stable component supply under automotive-grade reliability and traceability.
Supply support for TLE4284DVATMA1 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 security solutions, with global manufacturing and automotive qualification infrastructure.
The TLE4284 belongs to Infineon's TLE automotive linear regulator family, engineered specifically for harsh-environment power delivery in engine, transmission, and chassis control systems where reliability, thermal resilience, and integrated protection are non-negotiable.
FAQ
What is the minimum input-to-output voltage difference required for regulation?
The TLE4284DVATMA1 requires VI ≥ VQ + VDR, where VDR ranges from 1.00 V (100 mA load) to 1.40 V (1.0 A load). At 1.0 A, minimum VI is VQ + 1.40 V - e.g., 4.7 V input needed for stable 3.3 V output. Below this, regulation fails and output drops linearly.
Can the ADJ pin be left unconnected or tied directly to GND?
No. The ADJ pin must be connected to a resistor divider between Q and GND to set output voltage. Leaving it open causes undefined output; tying to GND forces ~1.25 V output and risks instability or excessive quiescent current due to internal reference loading.
Is an output capacitor mandatory, and what type is recommended?
Yes - a minimum 10 µF capacitor with ESR ≤10 Ω is required between Q and GND for stability and transient response. Ceramic (X7R/X5R) or low-ESR tantalum capacitors are recommended; aluminum electrolytics are discouraged due to higher ESR and aging effects.
How does thermal performance change with PCB copper area?
Thermal resistance drops from 144 K/W (no heatsink) to 78 K/W (300 mm² copper) and 54 K/W (600 mm² copper). For 1.0 A continuous load at 150 °C ambient, ≥600 mm² copper is required to keep junction temperature below 150 °C - verified using RthJC = 4 K/W and tab-to-PCB interface resistance.
TLE4284DVATMA1 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:
- Active
- Output Configuration:
- Positive
- Output Type:
- Adjustable
- Number of Regulators:
- 1
- Voltage - Input (Max):
- 40V
- Voltage - Output (Min/Fixed):
- 1.25V
- Voltage - Output (Max):
- 38.6V
- Voltage Dropout (Max):
- 1.4V @ 1A
- Current - Output:
- 1A
- Current - Quiescent (Iq):
- 120 µA
- Current - Supply (Max):
- 5 mA
- 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
TLE4284DVATMA1 FAQ
1.How can I place an order for TLE4284DVATMA1 through Aetrix?
Please submit a Request for Quotation (RFQ) for TLE4284DVATMA1 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 TLE4284DVATMA1 reliable?
The price and inventory of TLE4284DVATMA1 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for TLE4284DVATMA1 is usually 5 days.
3.What payment methods are accepted for TLE4284DVATMA1?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for TLE4284DVATMA1 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for TLE4284DVATMA1?
TLE4284DVATMA1 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your TLE4284DVATMA1 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 TLE4284DVATMA1?
For technical support, including TLE4284DVATMA1 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your TLE4284DVATMA1 requirements.
6.How does Aetrix verify that TLE4284DVATMA1 is sourced from the original manufacturer or authorized distributors?
All TLE4284DVATMA1 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 TLE4284DVATMA1 meets industry standards.
7.What is the process for return or replacement of TLE4284DVATMA1?
All TLE4284DVATMA1 units undergo pre-shipment inspection (PSI). If there is an issue with TLE4284DVATMA1, 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 TLE4284DVATMA1 part is unused and in its original packaging.
Return procedure for TLE4284DVATMA1:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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