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Home > Products > Integrated Circuits (ICs) > Power Management (PMIC) > Voltage Regulators - Linear, Low Drop Out (LDO) Regulators

Infineon Technologies TLE4284DV33ATMA1

Name: TLE4284DV33ATMA1
Brand: Infineon Technologies
SKU: TLE4284DV33ATMA1
Price: 2.40 USD
Availability: InStock
Rating: 5 (2 reviews)

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Part No.:: TLE4284DV33ATMA1

Manufacturer:: Infineon Technologies

Category:: Voltage Regulators - Linear, Low Drop Out (LDO) Regulators

Package:: TO-252-3, DPAK (2 Leads + Tab), SC-63

Datasheet:: TLE4284DV33ATMA1.pdf

Description:: IC REG LINEAR 3.3V 1A TO252-3-11

Quantity:: RFQ Add To RFQ list

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Inventory:2,350

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Product details

Overview

TLE4284DV33ATMA1 from Infineon Technologies is a monolithic NPN-type fixed-output 3.3 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, short-circuit and overtemperature protection, and operation from −40 °C to 150 °C junction temperature-designed for microprocessor power supply in engine control units.

For engineers reviewing the TLE4284DV33ATMA1 datasheet, TLE4284DV33ATMA1 pinout, TLE4284DV33ATMA1 application, or TLE4284DV33ATMA1 equivalent, key selection criteria include guaranteed 3.3 V ±50 mV output accuracy across 10 mA–1.0 A load, 1.0 V–1.4 V dropout range, 65 dB PSRR at 120 Hz, thermal resistance as low as 54 K/W with 600 mm² heatsink, and AEC-Q100 qualification for under-hood use.

Technical Context

The TLE4284DV33ATMA1 implements a fixed-output linear regulation architecture using an internal NPN pass transistor with integrated bandgap reference and error amplifier. It operates without external feedback components-output voltage is factory-trimmed to 3.3 V and stabilized by a minimum 10 µF output capacitor with ESR ≤10 Ω.

Protection logic includes foldback current limiting (1000–2200 mA trip threshold), thermal shutdown at ~170 °C junction, and safe operating area (SOA) enforcement via internal current sensing. Input voltage range spans (3.3 V + V_DR) to 40 V, supporting 12 V and 24 V automotive battery systems with transient tolerance.

Key Specifications

Parameter	Value and Actual Design Meaning
Output Voltage	3.3 V ±50 mV (guaranteed over −40 °C to 150 °C, 10 mA–1.0 A load)
Max Output Current	1.0 A continuous (internally limited; 50–200 mA at VI = 40 V)
Dropout Voltage	1.20 V typ. at 500 mA (ensures regulation down to VI ≥ 4.5 V)
PSRR	65 dB at 120 Hz (suppresses alternator ripple without external filtering)
Thermal Resistance	54 K/W with 600 mm² copper heatsink (enables 1.0 A operation at T_j ≤ 150 °C in ambient ≤ 85 °C)
Operating Temp	−40 °C to 150 °C junction (AEC-Q100 Grade 0 qualified)
Input Voltage Range	4.3 V to 40 V (supports cold-crank down to ~4.3 V with 3.3 V output)

Pinout & Package

Package: PG-TO252-3-11 (DPAK), surface-mount, thermally enhanced with exposed drain tab serving as output terminal and heatsink interface.

Pin/Terminal	Circuit Role	Design Meaning
GND (Pin 1)	Ground reference	Low-impedance return path for internal bias and protection circuits; must be connected to PCB ground plane
Q (Pin 2 + Tab)	Regulated output	Primary power output node; tab is electrically connected to Q and serves as thermal conduction path to heatsink
I (Pin 3)	Input supply	Connects to unregulated battery rail; requires local 100 nF ceramic bypass capacitor near pin

Key Features

Feature	Design Value
AEC-Q100 qualified	Grade 0 (−40 °C to +150 °C) compliance verified per stress test plan-enables direct use in safety-critical ECU modules
Integrated short-circuit protection	Foldback current limiting with 1000–2200 mA trip threshold and automatic recovery-prevents latch-up during wiring faults
Overtemperature shutdown	Thermal cutoff at ~170 °C junction with hysteresis-protects against sustained overload or heatsink failure
Low-noise output	30 ppm RMS noise (≈100 µV_RMS at 3.3 V) over 10 Hz–10 kHz-suitable for analog sensor interfaces and ADC references
Green product	RoHS-compliant, halogen-free, lead-free (Pb-free) packaging-meets EU ELV and automotive environmental directives

Applications

Engine Control Unit (ECU) Core Power

Transmission Control Module (TCM) Logic Supply

Use Scenario: Powers 32-bit microcontroller core, CAN transceiver, and EEPROM in gasoline/diesel ECU under wide battery voltage swings and high ambient heat.

IC Role / Device Role / Timing Role: Primary 3.3 V LDO supplying digital logic rails with tight regulation and fast transient response to CPU load changes.

Use Value: Maintains 3.3 V ±50 mV across −40 °C to 150 °C and 10 mA–1.0 A load, enabling reliable MCU boot and real-time operation during cranking and hot idle.

Use Scenario: Supplies 3.3 V to transmission solenoid driver ICs, position sensors, and SPI communication interfaces in automatic gearbox control units.

IC Role / Device Role / Timing Role: Stable low-noise supply for precision analog front-ends and timing-critical serial interfaces.

Use Value: 30 ppm RMS noise and 65 dB PSRR suppress alternator ripple and switching noise-reducing ADC errors and SPI CRC failures.

Body Control Module (BCM) Microcontroller Rail

Advanced Driver Assistance System (ADAS) Camera Module Power

Use Scenario: Delivers regulated 3.3 V to ARM Cortex-M based BCM SoC managing lighting, door locks, and HVAC controls in harsh under-dash environments.

IC Role / Device Role / Timing Role: Main system regulator with integrated protection-eliminates need for external current-limiting FET or thermal sensor.

Use Value: 1.0 A capability and 54 K/W thermal resistance allow full-power operation at 85 °C ambient without derating-reducing BOM count and board space.

Use Scenario: Powers image signal processor (ISP) and MIPI CSI-2 serializer in rear-view or surround-view camera modules mounted near exhaust or wheel wells.

IC Role / Device Role / Timing Role: Low-noise, high-reliability power source for vision processing ICs requiring stable voltage during vibration and thermal cycling.

Use Value: AEC-Q100 Grade 0 rating and −40 °C to 150 °C operation ensure functional integrity across vehicle lifetime-even after 10,000 thermal cycles.

Equivalent & Alternatives

The following parts are listed as comparable options for similar fixed-output automotive LDO applications.

Alternative Part	Technical Difference	Application Difference	Selection Advice
TLV73333PDBVR	3.3 V, 300 mA, 170 mV dropout, SOT-23-5 package, no AEC-Q100 qualification	Limited to infotainment or non-safety subsystems; insufficient current and thermal robustness for ECU/TCM	Select only for cost-sensitive, low-power interior modules where AEC-Q100 is not mandated
NCP1117ST33T3G	3.3 V, 1.0 A, 1.2 V dropout, TO-220/TO-263, AEC-Q100 Grade 3 (−40 °C to 125 °C)	Lower max junction temperature limits use in high-ambient zones (e.g., near engine block)	Acceptable for BCM or HVAC control where peak ambient stays below 105 °C

Compared with TLV73333PDBVR and NCP1117ST33T3G, TLE4284DV33ATMA1 uniquely combines 1.0 A output, AEC-Q100 Grade 0, and DPAK thermal performance-making it the only option qualified for under-hood ECU core power without derating or supplemental cooling.

Availability

TLE4284DV33ATMA1 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 across automotive production lifecycles.

Supply support for TLE4284DV33ATMA1 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 R&D and manufacturing infrastructure.

The TLE4284 belongs to Infineon's TLE automotive linear regulator family-engineered specifically for demanding power-supply roles in engine, transmission, and chassis control systems where reliability, thermal resilience, and AEC-Q100 compliance are mandatory.

FAQ

What is the minimum input voltage required for regulation at full 1.0 A load?

The minimum input voltage is calculated as V_OUT + V_DR(max) = 3.3 V + 1.40 V = 4.7 V. At 1.0 A load and T_j = 150 °C, the device maintains regulation down to 4.7 V input-sufficient to survive cold-crank events in 12 V systems where battery voltage dips to ~6.0 V, but not lower.

Can TLE4284DV33ATMA1 be used without an output capacitor?

No. A minimum 10 µF output capacitor with ESR ≤10 Ω is mandatory for stability and transient response. Omitting it causes oscillation and potential overvoltage damage. Ceramic or low-ESR tantalum types are recommended; aluminum electrolytics require careful ESR verification.

How does the thermal shutdown behave during sustained overload?

When junction temperature exceeds ~170 °C, the device disables the pass transistor and holds output at zero until T_j falls by ~20 °C hysteresis. Recovery is automatic and does not require power cycle-enabling graceful degradation during overheating without system reset.

Is the exposed tab electrically isolated from other pins?

No. The exposed tab is internally connected to Pin 2 (Q, output) and is not isolated. It must be mounted on a copper pour tied to the 3.3 V output net and cannot be grounded or left floating-otherwise thermal performance degrades and electrical shorts may occur.

TLE4284DV33ATMA1 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:: Last Time Buy

Output Configuration:: Positive

Output Type:: Fixed

Number of Regulators:: 1

Voltage - Input (Max):: 40V

Voltage - Output (Min/Fixed):: 3.3V

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

TLE4284DV33ATMA1 FAQ

1.How can I place an order for TLE4284DV33ATMA1 through Aetrix?

Please submit a Request for Quotation (RFQ) for TLE4284DV33ATMA1 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 TLE4284DV33ATMA1 reliable?

The price and inventory of TLE4284DV33ATMA1 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for TLE4284DV33ATMA1 is usually 5 days.

3.What payment methods are accepted for TLE4284DV33ATMA1?

We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for TLE4284DV33ATMA1 transactions.

Note: Certain payment methods may incur a processing fee.

4.How is shipping managed for TLE4284DV33ATMA1?

TLE4284DV33ATMA1 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.

Once your TLE4284DV33ATMA1 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 TLE4284DV33ATMA1?

For technical support, including TLE4284DV33ATMA1 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your TLE4284DV33ATMA1 requirements.

6.How does Aetrix verify that TLE4284DV33ATMA1 is sourced from the original manufacturer or authorized distributors?

All TLE4284DV33ATMA1 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 TLE4284DV33ATMA1 meets industry standards.

7.What is the process for return or replacement of TLE4284DV33ATMA1?

All TLE4284DV33ATMA1 units undergo pre-shipment inspection (PSI). If there is an issue with TLE4284DV33ATMA1, 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 TLE4284DV33ATMA1 part is unused and in its original packaging.

Return procedure for TLE4284DV33ATMA1:

1.Submit a request within 90 days.

2.Obtain a Return Material Authorization (RMA) from Aetrix.

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