IFX91041EJ V33 Infineon Integrated Circuit (Small Outline Packages) In Stock
Infineon IFX91041EJ V33 is a step-down DC/DC switching regulator with 45 V input tolerance, 1.8 A output current, and a fixed 3.3 V output in an 8-pin DSO-8 package. Designed for automotive and industrial power supply designs requiring robust voltage conversion. Available from stock with worldwide shipping.
- Manufacturer
- Infineon
- Package
- Small Outline Packages
- Pin Count
- 9
- Lifecycle
- ACTIVE
- Datasheet
- IFX91041EJ V33 Datasheet PDF
- Category
- Integrated Circuit
- RoHS
- Compliant
- Lead Time
- 3–7 business days
- Shipping
- DHL Express · Worldwide
What are the key features of IFX91041EJ V33?
- Wide 45 V input voltage range enabling direct operation from 12 V and 24 V automotive or industrial bus rails including load-dump conditions
- Fixed 3.3 V output regulated within 3.17 V to 3.43 V at up to 1.8 A for powering microcontrollers and digital logic
- Compact 8-pin DSO-8 package integrating the switching controller and power transistor for minimal external component count and reduced PCB area
What is IFX91041EJ V33 used for?
IFX91041EJ V33 is designed for automotive ECU power stages, industrial sensor nodes, and factory automation equipment where a rugged step-down regulator must supply 3.3 V from 12 V or 24 V rails at up to 1.8 A. The high 45 V input rating accommodates load-dump transients and start-stop events common in 12 V vehicle electrical systems. Its integrated switch and compact DSO-8 package reduce PCB area and simplify thermal management in space-limited designs.
Compliance & Regulatory
| RoHS Status | Compliant |
| Lead-Free | Yes (Pb-Free) |
Where can I find the IFX91041EJ V33 datasheet?
IFX91041EJ V33 Datasheet DownloadOfficial datasheet from Infineon
What are equivalent replacements for IFX91041EJ V33?
Compatible alternatives and drop-in replacements for IFX91041EJ V33:
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Frequently Asked Questions
Which automotive power supply designs can IFX91041EJ V33 support from a 12 V or 24 V bus?
IFX91041EJ V33 accepts input voltages up to 45 V, making it suitable for 12 V and 24 V automotive rails including those with load-dump transients. It delivers a fixed 3.3 V output at up to 1.8 A, sufficient to power microcontrollers, sensor interfaces, and digital logic in ECUs and body control modules.
How does the IFX91041EJ V33 maintain its output within 3.17 V to 3.43 V under varying load conditions?
The IFX91041EJ V33 uses internal feedback control to regulate its output within 3.17 V to 3.43 V across the full 1.8 A load range. The integrated switching controller adjusts duty cycle dynamically, maintaining tight output accuracy essential for 3.3 V rail-powered microcontrollers and FPGAs in automotive and industrial environments.
For an industrial sensor node, how does IFX91041EJ V33's DSO-8 package simplify PCB layout versus discrete regulator designs?
IFX91041EJ V33 integrates the switching controller and power transistor in an 8-pin DSO-8 package, eliminating the need for a separate driver IC and reducing external component count significantly. The 45 V input rating handles industrial rail transients, while the 1.8 A output can power multiple sensor ICs simultaneously from a single compact regulator footprint.
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