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

Infineon Technologies TLE4274GSV25HTSA2

Name: TLE4274GSV25HTSA2
Brand: Infineon Technologies
SKU: TLE4274GSV25HTSA2
Price: 2.40 USD
Availability: InStock
Rating: 5 (2 reviews)

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Part No.:: TLE4274GSV25HTSA2

Manufacturer:: Infineon Technologies

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

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

Datasheet:: TLE4274GSV25HTSA2.pdf

Description:: IC REG LIN 2.5V 400MA SOT223-4

Quantity:: RFQ Add To RFQ list

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Inventory:3,375

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Product details

Overview

TLE4274GSV25HTSA2 from Infineon Technologies is a fixed-output linear voltage regulator delivering 2.5 V ±4% at up to 400 mA, designed for automotive power supply rails in SOT223-4 package. It operates from 4.7 V to 40 V input, features reverse-polarity and short-circuit protection, and maintains regulation over −40 °C to +150 °C junction temperature-used in engine control unit sensor interfaces.

For engineers reviewing the TLE4274GSV25HTSA2 datasheet, TLE4274GSV25HTSA2 pinout, TLE4274GSV25HTSA2 application, or TLE4274GSV25HTSA2 equivalent, key selection criteria include dropout voltage (1.0–2.0 V at 300 mA), quiescent current (8–30 µA to 30 mA across load), thermal resistance (R_thJA = 100 K/W), RoHS compliance, and AEC-Q100 qualification for automotive deployment.

Technical Context

The TLE4274GSV25HTSA2 uses a bandgap reference and error amplifier to regulate output against load and line variations, with saturation control preventing series transistor oversaturation. Protection circuits actively monitor temperature, reverse polarity, and overload conditions, triggering shutdown before damage occurs.

Its internal architecture integrates a buffered control stage driving a PNP pass transistor, with dedicated GND pins (pins 2 and 4) thermally coupled to the heatsink in PG-SOT223-4. Stability requires C_Q ≥ 10 µF (ESR ≤ 2.5 Ω) and C_I ≥ 100 nF placed directly at input and output pins.

Key Specifications

Parameter	Value and Actual Design Meaning
Output Voltage	2.5 V ±4% - stable rail for 2.5 V logic or analog sensors under full automotive temp range
Max Output Current	400 mA - supports multiple low-power ECUs or sensor clusters without external boost
Input Voltage Range	4.7 V to 40 V - accommodates cold-crank (4.7 V) and load-dump (40 V) transients
Dropout Voltage	1.0–2.0 V at 300 mA - enables operation down to ~3.5 V input while maintaining 2.5 V output
Quiescent Current	8–30 µA to 30 mA - ultra-low standby draw for always-on modules; scales with load
Thermal Resistance	R_thJA = 100 K/W - requires ≥1 cm² copper pour on pin 4 for full 400 mA at 150 °C
PSRR	60 dB at 100 Hz - suppresses alternator ripple and switching noise on supply lines

Pinout & Package

PG-SOT223-4 package with exposed thermal pad connected to pin 4 (GND); pins 2 and 4 are internally tied to heatsink for enhanced thermal dissipation.

Pin/Terminal	Circuit Role	Design Meaning
1 (I)	Input	Primary VIN connection; must be decoupled with ≥100 nF ceramic capacitor directly at pin
2 (GND)	Ground	Signal and thermal ground reference; electrically tied to heatsink in SOT223-4
3 (Q)	Output	Regulated 2.5 V output; requires ≥10 µF output capacitor (ESR ≤ 2.5 Ω) for stability
4 (GND)	Ground / Heatsink	Dedicated thermal ground pin; soldered to large copper area for R_thJA = 100 K/W

Key Features

Feature	Design Value
Reverse-polarity protection	Withstands −42 V input without damage-eliminates need for external series diode in battery-reversed scenarios
Short-circuit proof operation	Current-limited to ~600 mA during fault; recovers automatically after fault removal
AEC-Q100 qualified	Validated for Grade 1 (−40 °C to +125 °C ambient) and extended junction range (−40 °C to +150 °C)
Green product (RoHS compliant)	Lead-free, halogen-free construction meeting EU Directive 2011/65/EU and JESD204B
Low-temperature drift	dV_Q/dT = −0.5 mV/K - ensures <±15 mV output shift over full −40 °C to +150 °C operating range

Applications

Engine Control Unit Sensor Supply

Automotive Camera Module Bias Rail

Use Scenario: Powering analog front-end circuits of knock or oxygen sensors in ECU subsystems.

IC Role / Device Role / Timing Role: Primary 2.5 V bias regulator supplying precision ADC references and op-amp rails.

Use Value: Maintains ±4% output accuracy and <15 mV drift across −40 °C to +150 °C, enabling consistent sensor calibration.

Use Scenario: Providing clean 2.5 V power to CMOS image sensor analog blocks in rear-view cameras.

IC Role / Device Role / Timing Role: Low-noise post-regulator downstream of DC/DC converter, rejecting switching ripple via 60 dB PSRR.

Use Value: Enables <60 dB SNR in image capture by suppressing high-frequency noise from upstream converters.

Body Control Module Microcontroller Core

Automotive Radar Transceiver Bias

Use Scenario: Supplying 2.5 V core voltage to 32-bit microcontrollers in door module or lighting controllers.

IC Role / Device Role / Timing Role: Load-switched LDO enabling controlled power-up sequencing and low-quiescent sleep mode.

Use Value: Draws only 8 µA in light-load standby-extending battery life in always-on vehicle networks.

Use Scenario: Delivering stable 2.5 V to RF front-end bias circuits in 77 GHz radar transceivers.

IC Role / Device Role / Timing Role: Local point-of-load regulator isolating sensitive RF circuitry from noisy main supply rails.

Use Value: Limits thermal rise to <25 K/W junction-to-case, ensuring stable RF gain and phase performance at 125 °C ambient.

Equivalent & Alternatives

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

Alternative Part	Technical Difference	Application Difference	Selection Advice
TLV73325PDBVR	Lower IQ (4 µA typ), lower max current (300 mA), smaller SOT-23-5 package	Lacks AEC-Q100 qualification and reverse-polarity protection	Preferred for non-automotive portable systems where size and ultra-low IQ dominate
NCV4274AST25T3G	Same 2.5 V output, AEC-Q100 Grade 1, but TO-252-3 package (R_thJA = 70 K/W)	Higher thermal performance but larger footprint; no dual-GND pin configuration	Chosen when higher continuous current (>400 mA) or improved thermal margin is required in space-tolerant layouts

Compared with TLV73325PDBVR and NCV4274AST25T3G, the TLE4274GSV25HTSA2 uniquely combines dual-GND thermal management in SOT223-4, reverse-polarity tolerance, and guaranteed 400 mA delivery across full automotive temperature range-making it optimal for compact, ruggedized ECU subassemblies.

Availability

TLE4274GSV25HTSA2 is available at Aetrix Electronics and suitable for engine control units, body control modules, and ADAS camera systems requiring stable component supply under AEC-Q100-compliant automotive production schedules.

Supply support for TLE4274GSV25HTSA2 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 qualification infrastructure.

The TLE4274 series belongs to Infineon's automotive linear regulator product line, engineered specifically for robust, low-noise power delivery in harsh-temperature engine bay and chassis environments.

FAQ

What is the maximum allowable input voltage for continuous operation?

The TLE4274GSV25HTSA2 supports continuous input voltages from 4.7 V to 40 V. Absolute maximum rating is 45 V, but operation above 40 V-even briefly-risks permanent damage due to internal power dissipation limits and thermal runaway. Load-dump transients must be clamped externally if exceeding 40 V.

Can this regulator be used without an output capacitor?

No. The TLE4274GSV25HTSA2 requires a minimum 10 µF output capacitor with ESR ≤ 2.5 Ω for closed-loop stability across −40 °C to +150 °C. Omitting C_Q causes oscillation, output overshoot, and potential damage during load transients-verified in Figure 4 and Table 4 of the datasheet.

How does the dual-GND pin configuration improve thermal performance?

Pins 2 and 4 are both GND and internally connected to the die's thermal pad in PG-SOT223-4. This dual-path layout reduces thermal resistance by distributing heat across two solder joints and enables direct attachment to large copper pours, achieving R_thJA = 100 K/W (vs. ~140 K/W with single-GND SOT223 variants).

Is the 2.5 V output trimmed at production or adjustable externally?

The 2.5 V output is factory-trimmed using laser adjustment of internal resistive dividers and is not user-adjustable. No external feedback network is supported-the device is strictly a fixed-output regulator. Output tolerance remains ±4% across full load, line, and temperature ranges per Table 4.

TLE4274GSV25HTSA2 Specifications

Product attributes: Attribute value

Manufacturer:: Infineon Technologies

Series:: OPTIREG™

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

Packaging:: Tape & Reel (TR)

Product Status:: Active

Output Configuration:: Positive

Output Type:: Fixed

Number of Regulators:: 1

Voltage - Input (Max):: 40V

Voltage - Output (Min/Fixed):: 2.5V

Voltage - Output (Max):: -

Voltage Dropout (Max):: 2V @ 300mA

Current - Output:: 400mA

Current - Quiescent (Iq):: 220 µA

Current - Supply (Max):: 30 mA

PSRR:: 60dB (100Hz)

Control Features:: -

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

Operating Temperature:: -40°C ~ 150°C (TJ)

Grade:: Automotive

Qualification:: AEC-Q100

Mounting Type:: Surface Mount

Supplier Device Package:: PG-SOT223-4

TLE4274GSV25HTSA2 FAQ

1.How can I place an order for TLE4274GSV25HTSA2 through Aetrix?

Please submit a Request for Quotation (RFQ) for TLE4274GSV25HTSA2 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 TLE4274GSV25HTSA2 reliable?

The price and inventory of TLE4274GSV25HTSA2 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for TLE4274GSV25HTSA2 is usually 5 days.

3.What payment methods are accepted for TLE4274GSV25HTSA2?

We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for TLE4274GSV25HTSA2 transactions.

Note: Certain payment methods may incur a processing fee.

4.How is shipping managed for TLE4274GSV25HTSA2?

TLE4274GSV25HTSA2 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.

Once your TLE4274GSV25HTSA2 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 TLE4274GSV25HTSA2?

For technical support, including TLE4274GSV25HTSA2 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your TLE4274GSV25HTSA2 requirements.

6.How does Aetrix verify that TLE4274GSV25HTSA2 is sourced from the original manufacturer or authorized distributors?

All TLE4274GSV25HTSA2 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 TLE4274GSV25HTSA2 meets industry standards.

7.What is the process for return or replacement of TLE4274GSV25HTSA2?

All TLE4274GSV25HTSA2 units undergo pre-shipment inspection (PSI). If there is an issue with TLE4274GSV25HTSA2, 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 TLE4274GSV25HTSA2 part is unused and in its original packaging.

Return procedure for TLE4274GSV25HTSA2:

1.Submit a request within 90 days.

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

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