LTC4236CUFD-2#PBF Analog Devices Integrated Circuit (Quad Flat No-Lead) In Stock
Analog Devices LTC4236CUFD-2#PBF is a single-channel hot swap controller supporting up to 18 V with adjustable current limiting, packaged in a compact 28-pin QFN with exposed pad for high-density designs. It enables safe board insertion and removal in live systems with integrated FET drive and fault protection. Available from stock worldwide with fast shipping.
- Manufacturer
- Analog Devices
- Package
- Quad Flat No-Lead
- Pin Count
- 28
- Lifecycle
- ACTIVE
- Datasheet
- LTC4236CUFD-2#PBF Datasheet PDF
- Category
- Integrated Circuit
- Price
- From $5.8300(MOQ 1)
- Temp Range
- ?°C to 70.0°C
- RoHS
- Compliant
- Lead Time
- 3–7 business days
- Shipping
- DHL Express · Worldwide
What are the key features of LTC4236CUFD-2#PBF?
- Supports hot swap operation up to 18 V with adjustable inrush current limit to protect backplane power rails during live board insertion
- 28-pin QFN EP package with exposed thermal pad minimizes PCB footprint while enabling thermal dissipation for sustained load current
- Integrated MOSFET gate drive and adjustable overcurrent threshold eliminate need for separate gate driver ICs in hot swap circuits
What is LTC4236CUFD-2#PBF used for?
The LTC4236CUFD-2#PBF is used in server backplanes, industrial plug-in module systems, and telecom line cards where boards must be inserted and removed while the system remains powered. Its adjustable current limiting prevents inrush spikes from disrupting shared 12 V or 18 V supply rails during hot insertion, protecting both the card and the backplane. Power system designers also use it in ATCA and CompactPCI chassis to manage per-slot power sequencing and fault isolation without interrupting adjacent boards.
What are the specifications of LTC4236CUFD-2#PBF?
| Pbfree Code | No |
| Manufacturer Package Code | 05-08-1712 |
| YTEOL | 10 |
| Adjustable Threshold | YES |
| Analog IC - Other Type | HOT SWAP CONTROLLER |
| JESD-30 Code | R-PQCC-N28 |
| JESD-609 Code | e3 |
| Number of Channels | 1 |
| Number of Functions | 1 |
| Package Body Material | PLASTIC/EPOXY |
| Package Equivalence Code | LCC28,.16X.2,20 |
| Package Shape | RECTANGULAR |
| Package Style | CHIP CARRIER, HEAT SINK/SLUG, VERY THIN PROFILE |
| Supply Current-Max (Isup) | 4mA |
| Supply Voltage-Max (Vsup) | 18V |
| Supply Voltage-Min (Vsup) | 2.9V |
| Supply Voltage-Nom (Vsup) | 12V |
| Surface Mount | YES |
| Technology | CMOS |
| Temperature Grade | COMMERCIAL |
| Terminal Finish | Matte Tin (Sn) |
| Terminal Form | NO LEAD |
| Terminal Pitch | 0.5mm |
| Terminal Position | QUAD |
| 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 |
| Country of Origin | Malaysia |
Where can I find the LTC4236CUFD-2#PBF datasheet?
LTC4236CUFD-2#PBF Datasheet DownloadOfficial datasheet from Analog Devices
What are equivalent replacements for LTC4236CUFD-2#PBF?
No known alternates. Submit an RFQ and our team can suggest alternatives.
Frequently Asked Questions
What maximum bus voltage can LTC4236CUFD-2#PBF protect during hot swap insertion, and how is the inrush limit set?
The LTC4236CUFD-2#PBF supports hot swap protection on bus voltages up to 18 V. The inrush current limit is set by an external sense resistor placed in the power path; selecting a resistor value between 1 mΩ and 50 mΩ programs the current limit threshold, typically between 1 A and 20 A, to match the board's bulk capacitance charging requirements without tripping the backplane breaker.
Why choose a 28-pin QFN package for LTC4236CUFD-2#PBF in a dense server slot controller versus a larger SOIC package?
The 28-pin QFN EP package of LTC4236CUFD-2#PBF occupies a PCB footprint of approximately 4 mm x 5 mm with an exposed thermal pad that conducts heat to the PCB ground plane, enabling sustained load currents without a heatsink. Compared to a 28-pin SOIC package at roughly 10 mm x 18 mm, the QFN saves over 60% of board area, which is critical in 1U server blades where multiple hot swap controllers must be placed near each backplane slot.
How does LTC4236CUFD-2#PBF handle an overcurrent fault during live board insertion in a 12 V ATCA chassis?
When load current exceeds the programmed threshold, the LTC4236CUFD-2#PBF responds within microseconds by ramping down the external N-channel MOSFET gate voltage to limit current to the set value. If the fault persists beyond a programmable timer period, typically 1 ms to 100 ms set by an external capacitor, the controller turns the FET fully off and latches the fault, isolating the faulted board from the 12 V rail and protecting adjacent slots in the ATCA chassis.
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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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