Send an Inquiry

To receive a quote for your project, please fill in the following information, and we’ll get back to you promptly.

Submit Inventory List

Please fill in the following information, and we’ll get back to you promptly.

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

Infineon Technologies TLE4274GSV33HTMA1

Name: TLE4274GSV33HTMA1
Brand: Infineon Technologies
SKU: TLE4274GSV33HTMA1
Price: 2.40 USD
Availability: InStock
Rating: 5 (2 reviews)

Compare

Part No.:: TLE4274GSV33HTMA1

Manufacturer:: Infineon Technologies

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

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

Datasheet:: TLE4274GSV33HTMA1.pdf

Description:: IC REG LIN 3.3V 400MA SOT223-4

Quantity:: RFQ Add To RFQ list

Payment:

Shipping:

Inventory:3,310

Please send an inquiry. Send us your inquiry, and we will respond immediately.

Product details

Overview

TLE4274GSV33HTMA1 from Infineon Technologies is a 3.3 V ±4% fixed-output linear voltage regulator in PG-SOT223-4 package, delivering up to 400 mA output current with input voltage range of 4.7–40 V. It features short-circuit and reverse-polarity protection, thermal shutdown, and AEC-Q100 qualification for automotive use in engine control units and body electronics.

For engineers reviewing the TLE4274GSV33HTMA1 datasheet, TLE4274GSV33HTMA1 pinout, TLE4274GSV33HTMA1 application, or TLE4274GSV33HTMA1 equivalent, key selection criteria include dropout voltage (0.7–1.2 V at 300 mA), quiescent current (8–30 µA to 30 mA across load), ESR-stable output capacitance (≥10 µF, ≤2.5 Ω), and junction temperature range (−40 °C to +150 °C).

Technical Context

The TLE4274GSV33HTMA1 uses a bandgap-referenced control amplifier driving a series pass transistor with saturation control to prevent oversaturation under high load. Internal protection circuits monitor temperature, output current, and polarity to trigger shutdown or current limiting.

It operates as a low-dropout linear regulator with fixed 3.3 V output, requiring only two external capacitors: 100 nF ceramic at input and ≥10 µF electrolytic/tantalum at output (ESR ≤ 2.5 Ω). Stability is guaranteed across −40 °C to +150 °C without additional compensation components.

Key Specifications

Parameter	Value and Actual Design Meaning
Output Voltage	3.3 V ±4% (3.17–3.44 V); stable across 5–400 mA load and 4.7–40 V input
Max Output Current	400 mA continuous; internally current-limited to 600 mA peak during fault
Dropout Voltage	0.7–1.2 V at 300 mA; enables operation with minimal headroom from 4.7 V input
Quiescent Current	8–30 µA at light load (1 mA), rising to 20–30 mA at full 400 mA output
Thermal Protection	Automatic shutdown at T_j ≥ 150 °C; restarts after cooldown
Input Voltage Range	−42 V to +45 V absolute max; functional range 4.7–40 V for regulated 3.3 V output
PSRR	60 dB at 100 Hz; suppresses ripple from upstream switching supplies

Pinout & Package

PG-SOT223-4 package: 4-pin thermally enhanced surface-mount package with exposed thermal pad (pin 4 connected to GND). Pin 1 = Input (I), pins 2 & 4 = GND (internally tied), pin 3 = Output (Q).

Pin/Terminal	Circuit Role	Design Meaning
1 (I)	Input	Connect directly to input rail via 100 nF ceramic capacitor; blocks high-frequency noise
2, 4 (GND)	Ground / Thermal Pad	Common return path and primary heat sink interface; requires PCB copper area ≥1 cm²
3 (Q)	Output	Delivers regulated 3.3 V; requires ≥10 µF output capacitor with ESR ≤ 2.5 Ω for stability

Key Features

Feature	Design Value
AEC-Q100 Qualified	Rated for automotive Grade 1 (−40 °C to +125 °C ambient) and extended junction range (−40 °C to +150 °C)
Reverse Polarity Protection	Withstands −42 V input without damage or latch-up; no external diode required
Short-Circuit Proof Operation	Current-limited to ~600 mA during output short; auto-recovers when fault clears
Low Quiescent Current	As low as 8 µA at 1 mA load-critical for always-on automotive modules
RoHS Compliant & Halogen-Free	Meets EU Directive 2011/65/EU and JEDEC JS709; green product designation confirmed

Applications

Engine Control Unit (ECU) Power Rail

Automotive Body Control Module (BCM)

Use Scenario: Supplies 3.3 V to microcontroller peripherals (CAN transceivers, ADCs, EEPROM) in gasoline/diesel ECUs operating under wide battery voltage swings (6–16 V nominal, up to 40 V load dump).

IC Role / Device Role / Timing Role: Primary post-regulator providing clean, protected 3.3 V from unregulated 12 V vehicle battery.

Use Value: Enables reliable MCU operation during cold cranking (down to 4.7 V input) and load dump (up to 40 V), with built-in reverse polarity tolerance eliminating need for external protection diodes.

Use Scenario: Powers door module MCUs, window lift drivers, and LED interior lighting controllers in BCM subassemblies.

IC Role / Device Role / Timing Role: Local point-of-load regulator converting battery voltage to stable 3.3 V for logic-level interfaces and sensor signal conditioning.

Use Value: Delivers 400 mA with <30 µA quiescent current in sleep mode-reducing parasitic drain while maintaining fast wake-up response.

Automotive Camera Module Supply

ADAS Radar Sensor Biasing

Use Scenario: Provides 3.3 V bias to CMOS image sensors and ISP processors in rear-view or surround-view cameras exposed to under-hood temperatures.

IC Role / Device Role / Timing Role: High-temperature-stable LDO supplying regulated power to imaging chain components.

Use Value: Maintains output regulation within ±4% across −40 °C to +150 °C junction temperature, ensuring consistent sensor gain and timing accuracy.

Use Scenario: Supplies 3.3 V to RF front-end ICs and microcontrollers in 77 GHz radar modules mounted near engine compartments.

IC Role / Device Role / Timing Role: Low-noise, PSRR-optimized regulator isolating sensitive analog/RF circuitry from noisy 12 V supply rails.

Use Value: 60 dB PSRR at 100 Hz suppresses switching noise from DC/DC converters feeding the radar subsystem, reducing phase noise and false detection risk.

Equivalent & Alternatives

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

Alternative Part	Technical Difference	Application Difference	Selection Advice
TLV73333PDBVR	Lower I_Q (4 µA typ), lower max current (300 mA), smaller SOT-23-5 package, no reverse polarity protection	Not AEC-Q100 qualified; suitable for non-automotive industrial or consumer designs with tighter space constraints	Select if board space is critical and reverse polarity risk is mitigated externally
TPS7B6733QPWPRQ1	Higher PSRR (70 dB @ 100 Hz), wider input range (4.5–40 V), same 400 mA rating, integrated enable pin	Includes active-high EN pin for system-level power sequencing; preferred for new ADAS designs requiring precise startup control	Choose when enable functionality and higher noise immunity are required in next-gen automotive systems

Compared with TLV73333PDBVR and TPS7B6733QPWPRQ1, the TLE4274GSV33HTMA1 uniquely combines reverse polarity tolerance, AEC-Q100 Grade 1 qualification, and proven thermal robustness in SOT223-making it optimal for cost-sensitive, high-reliability legacy and mid-tier automotive platforms where external protection is omitted.

Availability

TLE4274GSV33HTMA1 is available at Aetrix Electronics and suitable for engine control units, body control modules, camera modules, and radar sensor assemblies requiring stable component supply across automotive production lifecycles.

Supply support for TLE4274GSV33HTMA1 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, and industrial control ICs, with global manufacturing and automotive qualification infrastructure.

The TLE4274 family targets automotive power supply applications requiring high reliability, wide input range, and integrated protection-designed specifically for ECU, BCM, and sensor module power rails in harsh environments.

FAQ

What is the minimum input voltage required for regulation?

The TLE4274GSV33HTMA1 requires a minimum input voltage of 4.7 V to maintain 3.3 V output regulation at full 400 mA load. Below this, output voltage drops linearly with input. At lighter loads (e.g., 5 mA), regulation holds down to ~4.0 V due to lower dropout, but 4.7 V is the guaranteed functional threshold per datasheet Table 3.

Can this regulator be used without an output capacitor?

No. An output capacitor ≥10 µF with ESR ≤2.5 Ω is mandatory for loop stability across the full −40 °C to +150 °C operating range. Omitting it causes oscillation and potential output overvoltage failure. Ceramic capacitors alone are insufficient due to low ESR; aluminum or tantalum types meeting the ESR spec must be used.

Is thermal derating required on standard FR4 PCB?

Yes. With 1 cm² copper area at pin 4 (GND pad), R_thJA is 100 K/W. At 400 mA and 12 V input, power dissipation is ~3.5 W, causing ~350 K rise above ambient-exceeding 150 °C junction limit. Derate output current to ~200 mA maximum unless using larger copper area, internal layers, or forced air cooling.

Does the device support parallel operation for higher current?

No. The TLE4274GSV33HTMA1 lacks current-sharing capability or master/slave control. Parallel connection causes unequal current distribution due to output voltage tolerances (±4%), leading to thermal runaway in one unit. For >400 mA, select a single higher-current regulator or redesign with a switching pre-regulator.

TLE4274GSV33HTMA1 Specifications

Product attributes: Attribute value

Manufacturer:: Infineon Technologies

Series:: -

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):: 3.3V

Voltage - Output (Max):: -

Voltage Dropout (Max):: 1.2V @ 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

TLE4274GSV33HTMA1 FAQ

1.How can I place an order for TLE4274GSV33HTMA1 through Aetrix?

Please submit a Request for Quotation (RFQ) for TLE4274GSV33HTMA1 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 TLE4274GSV33HTMA1 reliable?

The price and inventory of TLE4274GSV33HTMA1 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for TLE4274GSV33HTMA1 is usually 5 days.

3.What payment methods are accepted for TLE4274GSV33HTMA1?

We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for TLE4274GSV33HTMA1 transactions.

Note: Certain payment methods may incur a processing fee.

4.How is shipping managed for TLE4274GSV33HTMA1?

TLE4274GSV33HTMA1 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.

Once your TLE4274GSV33HTMA1 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 TLE4274GSV33HTMA1?

For technical support, including TLE4274GSV33HTMA1 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your TLE4274GSV33HTMA1 requirements.

6.How does Aetrix verify that TLE4274GSV33HTMA1 is sourced from the original manufacturer or authorized distributors?

All TLE4274GSV33HTMA1 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 TLE4274GSV33HTMA1 meets industry standards.

7.What is the process for return or replacement of TLE4274GSV33HTMA1?

All TLE4274GSV33HTMA1 units undergo pre-shipment inspection (PSI). If there is an issue with TLE4274GSV33HTMA1, 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 TLE4274GSV33HTMA1 part is unused and in its original packaging.

Return procedure for TLE4274GSV33HTMA1:

1.Submit a request within 90 days.

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

Tech Hub

2026-08-27 Latch Circuit: SR and D Latches, Truth Tables, Timing, and Applications

Latch circuits retain one bit through feedback. This technical reference covers SR and D latches, truth tables, transparency, timing limits, latch-versus-flip-flop behavior, applications and common log…

2026-08-21 What Is an LED Driver? Types, Circuits, Dimming, and Selection

An engineering guide to LED driver operation, constant-current and constant-voltage outputs, linear and switching topologies, dimming, IC selection, calculations, replacement compatibility, and fault c…

2026-08-18 Operational Amplifier (Op Amp): Basics, Configurations, Feedback and Applications

Operational amplifier guide covering op amp basics, feedback, ideal vs real op amps, common configurations, buffer circuits, offset, bias current, gain-bandwidth, slew rate, rail-to-rail limits and sel…

2026-08-14 Jumper Cables: How to Use, Connect and Choose Them Safely

Jumper cables guide covering safe connection order, red and black clamp placement, final ground connection, cable gauge, length, clamp quality, copper vs CCA cables, jump starter comparison and battery…

2026-08-11 LDO Regulator: Dropout Voltage, Noise, PSRR and Power Dissipation

LDO regulator guide covering low dropout voltage, power dissipation, thermal design, PSRR, output noise, capacitor stability, adjustable LDO circuits, LDO vs buck converter and datasheet selection chec…

2026-08-06 Conditional Access Module: CAM, CI/CI+ and DVB Security

Conditional Access Module guide covering CAM meaning, CI/CI+ interface, smart card authorization, DVB security workflow, TV and set-top box compatibility, internal electronics, ESD protection, connecto…

2026-08-03 Electronic Component Obsolescence: EOL Risks, Replacement Options and Last-Time Buy Strategy

Guide to electronic component obsolescence covering EOL risk, PCN/PDN notices, last-time buy planning, replacement options, form-fit-function validation, counterfeit risk and BOM lifecycle management.

2026-07-29 18650 Battery: Voltage, Capacity, Charging and Pack Design

18650 battery guide covering lithium-ion cell basics, 3.6V/3.7V voltage, 4.2V charging, mAh and Wh capacity, protected cells, chargers, BMS, series-parallel packs, holders, welding and sourcing checks.…

2026-07-27 Hall Effect Sensor: Working Principle, Types, Circuits and Applications

Hall effect sensor guide covering working principle, linear and digital sensors, Arduino circuits, current sensing, speed detection, automotive applications, A3144 examples, signal filtering and datash…

2026-07-20 Product Change Notification (PCN) in Electronic Components: Meaning and Supply Chain Response

Product Change Notification guide for electronic components, covering PCN meaning, PCN vs PDN/EOL, common change types, risk levels, form-fit-function review, engineering validation, BOM control, LTB/L…