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

Infineon Technologies TLE4484G

Name: TLE4484G
Brand: Infineon Technologies
SKU: TLE4484G
Price: 2.40 USD
Availability: InStock
Rating: 5 (2 reviews)

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Part No.:: TLE4484G

Manufacturer:: Infineon Technologies

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

Package:: TO-261-4, TO-261AA

Datasheet:: TLE4484G.pdf

Description:: IC REG LINEAR 5V/15V SOT223-4

Quantity:: RFQ Add To RFQ list

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Inventory:3,185

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Product details

Overview

TLE4484G from Infineon Technologies is a dual-output monolithic voltage regulator IC providing regulated 5 V (up to 25 mA) and 15 V (up to 30 mA) outputs in a single P-SOT223-4-2 package. It operates across an input voltage range of 6.5–45 V, features ±2.5% output voltage accuracy at 25 °C, integrated overtemperature and short-circuit protection, and is designed for automotive microcontroller and MOSFET driver power supply applications.

For engineers reviewing the TLE4484G datasheet, TLE4484G pinout, TLE4484G application, or TLE4484G equivalent, key selection criteria include dual-rail output capability, high-input-voltage tolerance (45 V), low quiescent current (≤1 mA under full load), thermal shutdown threshold (150 °C), and SOT223-4 package compatibility with industrial and automotive PCB layouts.

Technical Context

The TLE4484G integrates two independent linear regulator channels-Q5 (5 V) and Q15 (15 V)-each with dedicated reference (1.25 V), overcurrent protection, and buffer stages. Both outputs share a common ground but are electrically isolated via Infineon's DOPL bipolar process, enabling simultaneous regulation without cross-talk.

It employs internal polysilicon resistors for high-voltage accuracy and uses a single thermal shutdown circuit that disables both outputs when junction temperature exceeds 150 °C. Input-to-output dropout remains ≤1.5 V across full load and temperature range, supporting operation down to VI = 6.5 V for Q5 and VI = 16.5 V for Q15.

Key Specifications

Parameter	Value and Actual Design Meaning
Output voltages	5.00 V ±2.5% (Q5); 15.0 V ±4% (Q15) - enables direct powering of MCU logic and gate drivers without external feedback
Max input voltage	45 V - supports 24 V automotive systems with load dump margin
Output current	25 mA (Q5), 30 mA (Q15) - sufficient for low-power MCUs and discrete MOSFET drivers
Quiescent current	≤1 mA at full load - minimizes standby power in always-on vehicle modules
Dropout voltage	≤1.5 V at rated load - allows regulation from 16.5 V input for 15 V rail
Thermal shutdown	150 °C (min) - protects against sustained overload in enclosed environments
PSRR	≥50 dB (20 Hz–20 kHz) - suppresses ripple from noisy battery/supply lines

Pinout & Package

Packaged in P-SOT223-4-2: thermally enhanced surface-mount package with exposed pad (AEP), 4-pin configuration, footprint compatible with standard SOT223 land pattern and optimized for PCB heat dissipation.

Pin/Terminal	Circuit Role	Design Meaning
1 (I)	Input voltage supply	Accepts 6.5–45 V; requires local 10 µF ceramic bypass capacitor directly at pin
2 (Q5)	5 V regulated output	Supplies microcontrollers and logic; requires 22 nF ceramic output capacitor
3 (Q15)	15 V regulated output	Drives external MOSFET gates; requires 1 µF ceramic output capacitor with ESR ≤2 Ω
4 (GND)	Common ground reference	Shared return path for both regulators; connects to thermal pad for heat sinking

Key Features

Feature	Design Value
Dual independent regulation	Simultaneous 5 V/15 V rails eliminate need for cascaded regulators or external DC-DC stages
High-accuracy polysilicon references	±2.5% V_Q5 and ±4% V_Q15 tolerance over -40 °C to +125 °C ensures stable MCU clocking and gate drive
Integrated protection	Short-circuit, overcurrent, and thermal shutdown protect both outputs without external components
Low-noise linear regulation	50 dB PSRR and <2.0 Ω output capacitor ESR support clean analog and timing circuits
Automotive-grade thermal design	R_th,j-a = 165 K/W (no heatsink) enables operation up to 125 °C ambient in engine bay modules

Applications

Body Control Module (BCM)

Engine Control Unit (ECU) Power Supply

Use Scenario: Centralized power management for door locks, lighting, and sensors in 12/24 V vehicles.

IC Role / Device Role / Timing Role: Dual-rail regulator supplying 5 V to microcontroller and 15 V to high-side driver ICs.

Use Value: Eliminates separate LDOs, reduces BOM count by two devices, and maintains rail stability during cold cranking (6.5 V min).

Use Scenario: Powering safety-critical engine control logic and ignition driver stages.

IC Role / Device Role / Timing Role: Primary 5 V source for MCU core and 15 V bias for IGBT/MOSFET gate drivers.

Use Value: Thermal shutdown prevents latch-up during prolonged overloads; 45 V max input withstands ISO 7637-2 pulse 5a.

Transmission Control Unit (TCU)

Electric Power Steering (EPS) Sensor Interface

Use Scenario: Regulating power for transmission solenoid controllers and CAN transceivers.

IC Role / Device Role / Timing Role: Provides isolated 5 V for CAN PHY and 15 V for solenoid driver bias.

Use Value: Independent overcurrent protection per rail avoids system-wide shutdown during solenoid fault events.

Use Scenario: Powering torque and position sensor signal conditioning circuits.

IC Role / Device Role / Timing Role: Supplies ultra-low-noise 5 V reference and stable 15 V excitation for bridge sensors.

Use Value: ≥50 dB PSRR ensures <100 µV ripple on 5 V rail, preserving 12-bit ADC accuracy.

Equivalent & Alternatives

The following parts are listed as comparable options for similar dual-output linear regulator applications.

Alternative Part	Technical Difference	Application Difference	Selection Advice
TLV7675015	Single-chip dual-LDO with 500 mA/300 mA outputs; lower IQ (25 µA), but max input 24 V	Not suitable for 45 V automotive load dump; better for low-power infotainment modules	Select if system input never exceeds 24 V and higher output current is required
TPS7H1101A-SP	Radiation-hardened 5 V LDO only; no 15 V rail; 60 V absolute max input; space-grade qualification	Used in satellite power systems where dual rail is implemented via discrete second stage	Select only for aerospace applications requiring TID > 100 krad(Si) and no dual-rail integration needed

Compared with TLV7675015 and TPS7H1101A-SP, the TLE4484G uniquely delivers automotive-grade dual-rail regulation up to 45 V in one package, with built-in thermal and short-circuit protection per output-making it irreplaceable for cost-sensitive, space-constrained engine and chassis control units.

Availability

TLE4484G is available at Aetrix Electronics and suitable for automotive body control modules, engine control units, and electric power steering systems requiring stable component supply across extended temperature and voltage ranges.

Supply support for TLE4484G 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 quality certification to AEC-Q100 and ISO/TS 16949.

The TLE4484G belongs to Infineon's TLE automotive linear regulator product line, engineered specifically for robust dual-rail power delivery in harsh-temperature engine compartment and chassis applications.

FAQ

What is the minimum input voltage required for stable 5 V and 15 V regulation?

The TLE4484G requires ≥6.5 V input to regulate the 5 V output and ≥16.5 V to regulate the 15 V output across the full operating temperature range (-40 °C to +125 °C). Below these thresholds, the respective output drops out of regulation while remaining protected.

Can the 5 V and 15 V outputs be used simultaneously at full rated current?

Yes-the device is characterized for simultaneous 25 mA on Q5 and 30 mA on Q15. Total power dissipation must remain within thermal limits: at 45 V input and full load, junction temperature rise is ~110 °C (R_th,j-a = 165 K/W), staying below the 150 °C shutdown threshold with minimal PCB copper.

Is external compensation required for stability with ceramic output capacitors?

No-both outputs are internally compensated for use with ceramic capacitors: 22 nF (Q5) and 1 µF (Q15), each with specified ESR limits (≤2.0 Ω and ≤4.0 Ω respectively). Adding series resistance or tantalum caps degrades transient response and is not recommended.

Does the TLE4484G support reverse-battery protection?

No-reverse-polarity protection is not integrated. The absolute minimum input voltage is -0.3 V; applying reverse battery voltage will damage the IC. External protection (e.g., series Schottky diode or ideal diode controller) must be added in systems subject to battery reversal.

TLE4484G Specifications

Product attributes: Attribute value

Manufacturer:: Infineon Technologies

Series:: -

Package/Case:: TO-261-4, TO-261AA

Packaging:: Tape & Reel (TR)

Product Status:: Obsolete

Output Configuration:: Positive

Output Type:: Fixed

Number of Regulators:: 2

Voltage - Input (Max):: 45V

Voltage - Output (Min/Fixed):: 5V, 15V

Voltage - Output (Max):: -

Voltage Dropout (Max):: 1.5V @ 25mA, 1.5V @ 30mA

Current - Output:: 25mA, 30mA

Current - Quiescent (Iq):: 550 µA

Current - Supply (Max):: 1 mA

PSRR:: 50dB (20Hz ~ 20kHz), 50dB (20Hz ~ 20kHz)

Control Features:: -

Protection Features:: Over Current, Over Temperature, Short Circuit

Operating Temperature:: -40°C ~ 150°C

Grade:: -

Qualification:: -

Mounting Type:: Surface Mount

Supplier Device Package:: PG-SOT223-4

TLE4484G FAQ

1.How can I place an order for TLE4484G through Aetrix?

Please submit a Request for Quotation (RFQ) for TLE4484G 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 TLE4484G reliable?

The price and inventory of TLE4484G are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for TLE4484G is usually 5 days.

3.What payment methods are accepted for TLE4484G?

We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for TLE4484G transactions.

Note: Certain payment methods may incur a processing fee.

4.How is shipping managed for TLE4484G?

TLE4484G orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.

Once your TLE4484G 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 TLE4484G?

For technical support, including TLE4484G datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your TLE4484G requirements.

6.How does Aetrix verify that TLE4484G is sourced from the original manufacturer or authorized distributors?

All TLE4484G 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 TLE4484G meets industry standards.

7.What is the process for return or replacement of TLE4484G?

All TLE4484G units undergo pre-shipment inspection (PSI). If there is an issue with TLE4484G, 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 TLE4484G part is unused and in its original packaging.

Return procedure for TLE4484G:

1.Submit a request within 90 days.

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

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