LTC4291IUF-1#PBF Analog Devices Integrated Circuit (Quad Flat No-Lead) In Stock
The LTC4291IUF-1#PBF is a 4-port IEEE 802.3at/af Power over Ethernet (PoE/PoE+) PSE controller in a compact 24-pin QFN package. It manages up to 4 PoE ports simultaneously, providing detection, classification, and power management for powered devices.
- Manufacturer
- Analog Devices
- Package
- Quad Flat No-Lead
- Pin Count
- 24
- Lifecycle
- ACTIVE
- Datasheet
- LTC4291IUF-1#PBF Datasheet PDF
- Category
- Integrated Circuit
- Price
- From $2.7900(MOQ 1)
- Temp Range
- -40.0°C to 85.0°C
- RoHS
- Compliant
- Lead Time
- 3–7 business days
- Shipping
- DHL Express · Worldwide
What are the key features of LTC4291IUF-1#PBF?
- 4-port IEEE 802.3at/af PoE/PoE+ PSE controller
- Supports detection, classification, and power delivery for up to 4 ports
- Integrated power management with programmable current limits
- 24-pin QFN package for compact PCB designs
- Operates over -40°C to 85°C industrial temperature range
What is LTC4291IUF-1#PBF used for?
The LTC4291IUF-1#PBF is designed for network switches, routers, and PoE midspan injectors requiring multi-port power delivery over Ethernet. It is widely used in industrial automation, IP security cameras, and VoIP equipment where centralized power management across 4 PoE ports simplifies system design and reduces BOM cost.
What are the specifications of LTC4291IUF-1#PBF?
| Pbfree Code | No |
| Manufacturer Package Code | 05-08-1697 |
| Date Of Intro | 2018-10-08 |
| YTEOL | 10 |
| JESD-30 Code | S-PQCC-N24 |
| JESD-609 Code | e3 |
| Package Body Material | PLASTIC/EPOXY |
| Package Equivalence Code | LCC24,.16SQ,20 |
| Package Shape | SQUARE |
| Package Style | CHIP CARRIER, HEAT SINK/SLUG, VERY THIN PROFILE |
| Peak Reflow Temperature (Cel) | 260 |
| Supply Voltage-Max | 57V |
| Supply Voltage-Min | 51V |
| Supply Voltage-Nom | 54V |
| Surface Mount | YES |
| Technology | CMOS |
| Terminal Finish | Matte Tin (Sn) |
| Terminal Form | NO LEAD |
| Terminal Pitch | 0.5mm |
| Terminal Position | QUAD |
| uPs/uCs/Peripheral ICs Type | PSE CONTROLLER |
| Package | Quad Flat No-Lead |
Compliance & Regulatory
| RoHS Status | Compliant |
| Lead-Free | Yes (Pb-Free) |
| Moisture Sensitivity Level | MSL 1 |
| ECCN | EAR99 |
| HTS Code | 8542.39.00.01 |
Where can I find the LTC4291IUF-1#PBF datasheet?
LTC4291IUF-1#PBF Datasheet DownloadOfficial datasheet from Analog Devices
What are equivalent replacements for LTC4291IUF-1#PBF?
Compatible alternatives and drop-in replacements for LTC4291IUF-1#PBF:
suggested
Frequently Asked Questions
How many PoE ports can LTC4291IUF-1#PBF manage simultaneously, and what IEEE standard does it support?
The LTC4291IUF-1#PBF supports up to 4 PoE ports simultaneously and is compliant with IEEE 802.3at (PoE+) and 802.3af (PoE), enabling up to 30 W per port delivery at 48 V nominal supply voltage.
What operating temperature range makes LTC4291IUF-1#PBF suitable for industrial network deployments?
The LTC4291IUF-1#PBF is rated for an industrial operating temperature range of -40°C to 85°C, making it suitable for outdoor enclosures, factory floor network equipment, and harsh-environment PoE switches.
Which package does LTC4291IUF-1#PBF use and how does it affect thermal management in a 4-port PSE design?
LTC4291IUF-1#PBF is housed in a 24-pin QFN (Quad Flat No-Lead) package with an exposed thermal pad, which improves heat dissipation and allows a compact board footprint — critical when integrating 4 PoE ports in a space-constrained switch design.
Is LTC4291IUF-1#PBF RoHS-compliant and what does the #PBF suffix indicate for procurement?
The #PBF suffix indicates a lead-free, RoHS-compliant finish. Procurement teams specifying green or REACH-compliant assemblies for European or Asian markets can safely select this variant without additional environmental compliance review.
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Why Buy from FindMyChip
About Analog Devices
Analog Devices (ADI) is a global leader in high-performance analog, mixed-signal, and digital signal processing integrated circuits used in virtually all types of electronic equipment.
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