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

Infineon Technologies IFX7805ABTSAKSA1

Name: IFX7805ABTSAKSA1
Brand: Infineon Technologies
SKU: IFX7805ABTSAKSA1
Price: 2.40 USD
Availability: InStock
Rating: 5 (2 reviews)

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Part No.:: IFX7805ABTSAKSA1

Manufacturer:: Infineon Technologies

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

Package:: TO-220-3

Datasheet:: IFX7805ABTSAKSA1.pdf

Description:: IC REG LINEAR 5V 1A TO220-3

Quantity:: RFQ Add To RFQ list

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Inventory:2,987

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Product details

Overview

IFX7805ABTSAKSA1 from Infineon Technologies is a monolithic 3-terminal positive linear voltage regulator delivering fixed 5 V output at up to 1.0 A, with input voltage range up to 35 V, thermal shutdown, short-circuit current limiting, and safe-area protection. It operates across −40 °C to +125 °C junction temperature and is packaged in PG-TO-220-3 for industrial power supply regulation.

For engineers reviewing the IFX7805ABTSAKSA1 datasheet, IFX7805ABTSAKSA1 pinout, IFX7805ABTSAKSA1 application, or IFX7805ABTSAKSA1 equivalent, key selection criteria include dropout voltage (2 V @ 1 A), output voltage accuracy (±3.8% over load/line/temp), thermal resistance (R_thJA = 41 K/W), and robust fault protections for local DC-DC regulation in non-automotive embedded systems.

Technical Context

The IFX7805ABTSAKSA1 implements an internal error amplifier, voltage reference, and bias network to regulate output against line and load variations. Its protection architecture integrates thermal shutdown triggered above +150 °C junction temperature, SOA-limited power dissipation, and foldback current limiting during short-circuit events.

It uses a fixed internal feedback network to maintain 5 V output without external resistors. The device requires minimum 0.33 µF input and 100 nF output capacitors for stability, and its dropout behavior is defined by internal pass transistor saturation characteristics-not low-dropout (LDO) topology.

Key Specifications

Parameter	Value and Actual Design Meaning
Output Voltage	5.00 V ±3.8% (4.80–5.20 V) over full load, line, and temperature range - ensures stable logic supply for microcontrollers and sensors.
Max Output Current	1.0 A continuous - supports moderate-power analog/digital loads without external boost circuitry.
Input Voltage Range	7.5 V to 35 V - accommodates wide-input unregulated rails including 12 V, 24 V, and 28 V industrial supplies.
Dropout Voltage	2.0 V @ 1 A - defines minimum headroom needed between input and output to sustain regulation.
Quiescent Current	3.5–6.0 mA - contributes directly to no-load power loss; stable across operating conditions.
Ripple Rejection	68–75 dB @ 120 Hz - suppresses rectified AC ripple from unregulated DC sources.
Thermal Resistance	R_thJA = 41 K/W (PG-TO-220-3, natural convection) - determines maximum power dissipation before thermal shutdown.

Pinout & Package

IFX7805ABTSAKSA1 is housed in PG-TO-220-3 package with exposed thermal tab internally connected to GND. Pin 1 (IN) accepts unregulated input, Pin 2 (GND) serves as ground reference and thermal path, Pin 3 (OUT) delivers regulated 5 V output.

Pin/Terminal	Circuit Role	Design Meaning
1 (IN)	Unregulated Input Supply	Accepts 7.5–35 V DC; requires ≥0.33 µF bypass capacitor to ground for stability and noise suppression.
2 (GND)	Ground Reference & Thermal Path	Internally tied to metal tab; must be soldered to PCB copper pour for thermal management and low-impedance return.
3 (OUT)	Regulated 5 V Output	Supplies load; requires ≥100 nF ceramic capacitor to ground to prevent oscillation under dynamic load steps.

Key Features

Feature	Design Value
Thermal Shutdown Protection	Activates at T_j ≥ +150 °C to prevent permanent damage during sustained overload or poor heatsinking.
Short-Circuit Current Limit	Clamps output to 0.5–1.2 A during hard shorts, limiting power dissipation and enabling safe recovery.
Safe-Area Compensation	Dynamically restricts internal power dissipation under high V_IN/I_OUT combinations to avoid second breakdown.
Wide Operating Temperature	Functional from −40 °C to +125 °C junction - suitable for industrial enclosures without active cooling.
RoHS-Compliant Green Product	Meets EU Directive 2011/65/EU - enables compliance in environmentally regulated end equipment.

Applications

Industrial PLC Power Rails

Embedded Controller Local Regulation

Use Scenario: Providing clean 5 V supply to I/O modules and communication interfaces inside programmable logic controllers operating in factory environments.

IC Role / Device Role / Timing Role: Primary linear regulator converting 24 V DC bus to stable 5 V for digital logic and analog signal conditioning circuits.

Use Value: Delivers 1 A with <15 mV load regulation and 68 dB ripple rejection-minimizing noise coupling into sensitive ADC references and UART lines.

Use Scenario: On-board regulation for ARM Cortex-M microcontrollers, EEPROM, and level-shifting buffers in edge-node sensor gateways.

IC Role / Device Role / Timing Role: Local point-of-load regulator eliminating long-trace IR drop and noise from centralized power supplies.

Use Value: Fixed 5 V output with ±3.8% tolerance and −40 °C to +125 °C operation ensures reliable boot and runtime performance across ambient extremes.

Test & Measurement Equipment

Motor Drive Control Boards

Use Scenario: Powering precision op-amps, DACs, and reference ICs in portable multimeters and signal generators.

IC Role / Device Role / Timing Role: Low-noise analog rail generator with 40 µV RMS output noise (10 Hz–100 kHz) and tight line regulation.

Use Value: Enables sub-millivolt measurement accuracy by suppressing supply-induced offset drift and ripple-induced harmonic distortion.

Use Scenario: Supplying gate drivers, optocouplers, and MCU peripherals on motor control boards exposed to vibration and thermal cycling.

IC Role / Device Role / Timing Role: Robust 5 V source tolerant of transient input surges and intermittent ground faults.

Use Value: Integrated short-circuit and thermal protection prevents latch-up or destruction during MOSFET shoot-through or heatsink detachment events.

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
LM7805CDT/NOPB (TI)	Same 5 V/1 A rating but higher quiescent current (5.5–8 mA), lower PSRR (70 dB), and R_thJA = 50 K/W in TO-220.	Lacks safe-area compensation; less robust under simultaneous high-V_IN/high-I_OUT stress.	Preferred where cost sensitivity outweighs thermal margin requirements in benign thermal environments.
ST L7805CV (STMicroelectronics)	Identical 5 V/1 A spec, but includes built-in reverse-voltage protection and slightly tighter output tolerance (±2%).	Reverse polarity immunity allows use in battery-backed or field-serviceable systems where input wiring errors may occur.	Select when input polarity reversal risk exists and RoHS-compliant footprint compatibility with TO-220 is required.

Compared with LM7805CDT/NOPB and ST L7805CV, IFX7805ABTSAKSA1 offers superior thermal resistance (41 vs. 50 K/W), integrated safe-area protection, and lower quiescent current-making it optimal for thermally constrained industrial designs requiring fault resilience without external protection circuitry.

Availability

IFX7805ABTSAKSA1 is available at Aetrix Electronics and suitable for industrial PLC power rails, embedded controller local regulation, and test & measurement equipment requiring stable component supply, long-term lifecycle support, and RoHS-compliant sourcing.

Supply support for IFX7805ABTSAKSA1 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 electronics, and industrial control ICs, with global manufacturing and quality certification to ISO/TS 16949 and ISO 9001.

The IFX7805 belongs to Infineon's standard linear regulator product line, designed for ruggedized industrial and commercial applications where reliability, thermal robustness, and integrated protection outweigh automotive qualification requirements.

FAQ

What is the minimum input voltage required for regulation?

The IFX7805ABTSAKSA1 requires a minimum input voltage of 7.5 V to maintain specified line regulation across its full operating range. This accounts for the 2.0 V dropout voltage plus output tolerance margin. Below 7.5 V, output voltage drops linearly with input and regulation is lost.

Can IFX7805ABTSAKSA1 be used without a heatsink?

Yes, but only at reduced output current. With R_thJA = 41 K/W and maximum junction temperature of +150 °C, continuous 1 A operation at 25 °C ambient requires ≤1.2 W power dissipation-achievable only if input voltage stays near 7.5 V. At 24 V input, a heatsink is mandatory to avoid thermal shutdown.

Does this regulator support reverse-polarity input protection?

No. The IFX7805ABTSAKSA1 lacks internal reverse-voltage protection. Applying negative voltage to the IN pin relative to GND can cause irreversible damage. External series diode or MOSFET-based protection must be added if reverse polarity is possible in the system.

Is IFX7805ABTSAKSA1 qualified for automotive applications?

No. Per Infineon's datasheet, IFX7805ABTSAKSA1 is not qualified to AEC-Q100 or manufactured per automotive process requirements. For automotive use, Infineon recommends TLx-series regulators (e.g., TLE4275) which include extended temperature range, enhanced ESD, and qualification testing.

IFX7805ABTSAKSA1 Specifications

Product attributes: Attribute value

Manufacturer:: Infineon Technologies

Series:: -

Package/Case:: TO-220-3

Packaging:: Tube

Product Status:: Obsolete

Output Configuration:: Positive

Output Type:: Fixed

Number of Regulators:: 1

Voltage - Input (Max):: 35V

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

Voltage - Output (Max):: -

Voltage Dropout (Max):: 2V @ 1A (Typ)

Current - Output:: 1A

Current - Quiescent (Iq):: 5 mA

Current - Supply (Max):: 6 mA

PSRR:: 75dB (120Hz)

Control Features:: -

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

Operating Temperature:: -40°C ~ 125°C

Grade:: -

Qualification:: -

Mounting Type:: Through Hole

Supplier Device Package:: PG-TO220-3

IFX7805ABTSAKSA1 FAQ

1.How can I place an order for IFX7805ABTSAKSA1 through Aetrix?

Please submit a Request for Quotation (RFQ) for IFX7805ABTSAKSA1 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 IFX7805ABTSAKSA1 reliable?

The price and inventory of IFX7805ABTSAKSA1 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for IFX7805ABTSAKSA1 is usually 5 days.

3.What payment methods are accepted for IFX7805ABTSAKSA1?

We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for IFX7805ABTSAKSA1 transactions.

Note: Certain payment methods may incur a processing fee.

4.How is shipping managed for IFX7805ABTSAKSA1?

IFX7805ABTSAKSA1 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.

Once your IFX7805ABTSAKSA1 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 IFX7805ABTSAKSA1?

For technical support, including IFX7805ABTSAKSA1 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your IFX7805ABTSAKSA1 requirements.

6.How does Aetrix verify that IFX7805ABTSAKSA1 is sourced from the original manufacturer or authorized distributors?

All IFX7805ABTSAKSA1 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 IFX7805ABTSAKSA1 meets industry standards.

7.What is the process for return or replacement of IFX7805ABTSAKSA1?

All IFX7805ABTSAKSA1 units undergo pre-shipment inspection (PSI). If there is an issue with IFX7805ABTSAKSA1, 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 IFX7805ABTSAKSA1 part is unused and in its original packaging.

Return procedure for IFX7805ABTSAKSA1:

1.Submit a request within 90 days.

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

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