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

Infineon Technologies TLE4284DV26

Name: TLE4284DV26
Brand: Infineon Technologies
SKU: TLE4284DV26
Price: 2.40 USD
Availability: InStock
Rating: 5 (2 reviews)

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Part No.:: TLE4284DV26

Manufacturer:: Infineon Technologies

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

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

Datasheet:: TLE4284DV26.pdf

Description:: IC REG LINEAR FIXED LDO REG

Quantity:: RFQ Add To RFQ list

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Inventory:14,243

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Product details

Overview

TLE4284DV26 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 2.6 V nominal output, 1.0–1.4 V dropout (at 100–1000 mA), and operation over -40 °C to +150 °C junction temperature - designed for automotive microprocessor power supply under harsh conditions.

For engineers reviewing the TLE4284DV26 datasheet, TLE4284DV26 pinout, TLE4284DV26 application, or TLE4284DV26 equivalent, key selection criteria include dropout voltage at full load, thermal resistance with heatsink area, PSRR at 120 Hz, RMS output noise (30 ppm), and AEC-Q100 qualification status for automotive-grade reliability.

Technical Context

The TLE4284DV26 implements an internal bandgap reference (1.20–1.30 V) and NPN pass transistor architecture, enabling adjustable output via external resistor divider on the ADJ pin. It operates with input-to-output differential voltage as low as V_Q + V_DR, where V_DR rises from 1.00 V (100 mA) to 1.40 V (1.0 A).

Protection logic integrates thermal shutdown (T_j ≥ 150 °C), short-circuit current limiting (1000–2200 mA typical), and foldback behavior at high VI–VQ. ESD robustness meets JEDEC JESD22-A114 (4 kV HBM) and JESD22-C101 (1 kV CDM).

Key Specifications

Parameter	Value and Actual Design Meaning
Output Voltage	Adjustable: set to 2.6 V nominal via external resistor divider on ADJ pin
Max Output Current	1.0 A continuous; current limit activates at 1000–2200 mA depending on VI–VQ
Dropout Voltage	1.30–1.40 V at 1.0 A load; defines minimum VI required for regulation at VQ = 2.6 V
Input Voltage Range	VI = VQ + VDR to 40 V; supports automotive battery transients up to 40 V
Junction Temp Range	-40 °C to +150 °C; validated for under-hood automotive environments
PSRR	65 dB at 120 Hz; suppresses alternator ripple without external filtering
RMS Output Noise	30 ppm of VQ (78 nV RMS at 2.6 V); suitable for noise-sensitive analog/microcontroller rails

Pinout & Package

Package: PG-TO252-3-11 (DPAK), surface-mount, thermally enhanced with exposed tab connected to output (Pin 2/Tab). Requires ≥10 µF output capacitor (ESR ≤ 10 Ω) and heatsink area for >500 mA operation.

Pin/Terminal	Circuit Role	Design Meaning
1	ADJ	Adjust terminal: sets output voltage via external resistive divider between Q and GND
2 / Tab	Q	Regulated output; electrically and thermally connected to exposed metal tab - must be soldered to PCB copper pour or heatsink
3	I	Input: accepts unregulated DC up to 40 V; requires local ceramic bypass near pin

Key Features

Feature	Design Value
AEC-Q100 Qualified	Validated for automotive applications per Grade 0 (-40 °C to +150 °C)
Integrated Protection	Thermal shutdown + short-circuit current limiting + safe operating area control
Low-Noise Regulation	30 ppm RMS noise enables direct powering of ADC references and PLLs
High PSRR at Low Frequency	65 dB at 120 Hz rejects alternator ripple without additional LC filtering
Robust ESD Rating	4 kV HBM and 1 kV CDM support automated assembly and field reliability

Applications

Engine Control Unit (ECU) Power Rail

Body Control Module (BCM) Microcontroller Supply

Use Scenario: Supplies 2.6 V rail to automotive MCU core or I/O domain in engine bay.

IC Role / Device Role / Timing Role: Primary linear regulator providing stable, low-noise bias for safety-critical MCU operation.

Use Value: Maintains regulation during cold cranking (VI ≥ 5.5 V) and load dump (VI ≤ 40 V) while rejecting alternator ripple.

Use Scenario: Powers 2.6 V logic interface in door module or lighting controller.

IC Role / Device Role / Timing Role: Adjustable LDO supplying configurable voltage to mixed-signal ASICs with tight tolerance requirements.

Use Value: Enables single-BOM flexibility across multiple vehicle platforms by reconfiguring ADJ resistors.

Automotive Camera Sensor Bias

ADAS Radar Signal Chain Supply

Use Scenario: Provides clean 2.6 V bias to CMOS image sensor analog front-end.

IC Role / Device Role / Timing Role: Low-noise linear regulator decoupling sensor analog supply from noisy digital domains.

Use Value: 30 ppm RMS noise prevents fixed-pattern noise in captured imagery under wide temperature range.

Use Scenario: Supplies 2.6 V to RF synthesizer VCO tuning circuitry in 77 GHz radar modules.

IC Role / Device Role / Timing Role: Precision voltage source stabilizing oscillator control voltage under thermal stress.

Use Value: 65 dB PSRR at 120 Hz suppresses power-supply-induced phase jitter in frequency synthesis.

Equivalent & Alternatives

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

Alternative Part	Technical Difference	Application Difference	Selection Advice
TLV73326PDBVR	300 mA max output; 220 mV typical dropout; SOT-23-5 package; no AEC-Q100 rating	Limited to non-safety-critical infotainment or telematics; not qualified for powertrain or ADAS	Select only for cost-sensitive, low-current interior modules with ambient temp < 105 °C
NCP1117DT26T3G	1.0 A output; 1.2 V dropout at 800 mA; TO-252; AEC-Q100 Grade 2 (−40 °C to +105 °C)	Lower max junction temperature limits use in high-temp under-hood locations	Acceptable for BCM or HVAC control where peak Tj stays below 105 °C

Compared with TLV73326PDBVR and NCP1117DT26T3G, the TLE4284DV26 uniquely supports 150 °C operation, integrated short-circuit foldback, and 40 V input capability - making it the only option qualified for direct engine compartment deployment with full transient immunity.

Availability

TLE4284DV26 is available at Aetrix Electronics and suitable for automotive powertrain control, ADAS sensor modules, body electronics, and industrial motor drives requiring stable component supply across extended temperature and voltage ranges.

Supply support for TLE4284DV26 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 TLE4284 belongs to Infineon's TLE family of automotive-grade linear regulators, engineered specifically for high-reliability power supply in engine control, transmission, and chassis systems under extreme thermal and electrical stress.

FAQ

What is the minimum input voltage required for regulation at 2.6 V output?

The minimum input voltage is V_Q + V_DR, where V_DR depends on load current: 1.30 V at 1.0 A → VI ≥ 3.9 V. At lighter loads (100 mA), V_DR drops to 1.00 V → VI ≥ 3.6 V. Input must also exceed absolute minimum VI of –0.3 V per datasheet.

Can the TLE4284DV26 be used without an external heatsink?

Yes, for loads ≤300 mA with R_thJA = 144 K/W (standard FR4 footprint), junction temperature remains within spec at 25 °C ambient. Above 300 mA or in elevated ambient, a 300 mm² copper pour (R_thJA = 78 K/W) or larger heatsink is required to maintain T_j ≤ 150 °C.

Is the ADJ pin internally biased, and what is its leakage current?

The ADJ pin draws 75–120 µA (typical 100 µA) at 10 mA output, with ±5 µA variation over line/load conditions. It is not internally biased - external resistor divider must sink this current to set V_Q = V_REF × (1 + R1/R2), where V_REF = 1.25 V.

Does the TLE4284DV26 require an input capacitor, and what value is recommended?

Yes - a minimum 1 µF X7R ceramic capacitor placed ≤5 mm from Pin 3 (I) is required to prevent oscillation and improve transient response. For high-ripple environments (e.g., alternator-fed systems), a 10 µF tantalum or polymer capacitor in parallel is recommended to enhance stability and PSRR.

TLE4284DV26 Specifications

Product attributes: Attribute value

Manufacturer:: Infineon Technologies

Series:: -

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

Packaging:: Bulk

Product Status:: Active

Output Configuration:: Positive

Output Type:: Fixed

Number of Regulators:: 1

Voltage - Input (Max):: 40V

Voltage - Output (Min/Fixed):: 2.6V

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 (TJ)

Grade:: Automotive

Qualification:: AEC-Q100

Mounting Type:: Surface Mount

Supplier Device Package:: PG-TO252-3-11

TLE4284DV26 FAQ

1.How can I place an order for TLE4284DV26 through Aetrix?

Please submit a Request for Quotation (RFQ) for TLE4284DV26 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 TLE4284DV26 reliable?

The price and inventory of TLE4284DV26 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for TLE4284DV26 is usually 5 days.

3.What payment methods are accepted for TLE4284DV26?

We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for TLE4284DV26 transactions.

Note: Certain payment methods may incur a processing fee.

4.How is shipping managed for TLE4284DV26?

TLE4284DV26 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.

Once your TLE4284DV26 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 TLE4284DV26?

For technical support, including TLE4284DV26 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your TLE4284DV26 requirements.

6.How does Aetrix verify that TLE4284DV26 is sourced from the original manufacturer or authorized distributors?

All TLE4284DV26 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 TLE4284DV26 meets industry standards.

7.What is the process for return or replacement of TLE4284DV26?

All TLE4284DV26 units undergo pre-shipment inspection (PSI). If there is an issue with TLE4284DV26, 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 TLE4284DV26 part is unused and in its original packaging.

Return procedure for TLE4284DV26:

1.Submit a request within 90 days.

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

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