LTC4231IUD-1#PBF Analog Devices Integrated Circuit (Quad Flat No-Lead) In Stock
The LTC4231IUD-1#PBF is a micropower hot swap controller with latch-off protection from Analog Devices in a 12-pin QFN package. It supports a 2.7 V to 36 V input range with adjustable current limiting and automatic latch-off on overcurrent faults. Available from stock with worldwide shipping.
- Manufacturer
- Analog Devices
- Package
- Quad Flat No-Lead
- Pin Count
- 12
- Lifecycle
- ACTIVE
- Datasheet
- LTC4231IUD-1#PBF Datasheet PDF
- Category
- Integrated Circuit
- Price
- From $3.6100(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 LTC4231IUD-1#PBF?
- Wide 2.7 V to 36 V input operating range enabling use in 5 V, 12 V, 24 V, and 28 V bus systems
- Automatic latch-off protection on overcurrent events, preventing repetitive retry damage to loads and boards
- Micropower quiescent current in a compact 12-pin QFN (3 mm x 3 mm) package for space-constrained hot-swap slots
What is LTC4231IUD-1#PBF used for?
The LTC4231IUD-1#PBF is used in hot-swap and inrush current management applications where circuit boards must be safely inserted and removed from live backplanes in telecom, datacom, and industrial systems. Its latch-off protection is particularly valuable in 12 V to 28 V server and storage backplane designs where overcurrent events must not cause repeated board resets. The device also serves redundant power supply sequencing and board-level protection in test equipment and embedded computing platforms.
What are the specifications of LTC4231IUD-1#PBF?
| Pbfree Code | No |
| Manufacturer Package Code | 05-08-1855 |
| YTEOL | 10 |
| Analog IC - Other Type | SWITCHING CONTROLLER |
| Input Voltage-Max | 36V |
| Input Voltage-Min | 2.7V |
| Input Voltage-Nom | 7V |
| JESD-30 Code | S-PQCC-N12 |
| JESD-609 Code | e3 |
| Number of Functions | 1 |
| Package Body Material | PLASTIC/EPOXY |
| Package Shape | SQUARE |
| Package Style | CHIP CARRIER, HEAT SINK/SLUG, VERY THIN PROFILE |
| Surface Mount | YES |
| Technology | CMOS |
| Temperature Grade | INDUSTRIAL |
| 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 LTC4231IUD-1#PBF datasheet?
LTC4231IUD-1#PBF Datasheet DownloadOfficial datasheet from Analog Devices
What are equivalent replacements for LTC4231IUD-1#PBF?
No known alternates. Submit an RFQ and our team can suggest alternatives.
Frequently Asked Questions
What input voltage range does the LTC4231IUD-1#PBF support and which bus voltages is it compatible with?
The LTC4231IUD-1#PBF operates across a 2.7 V to 36 V input voltage range, making it compatible with 5 V, 12 V, 24 V, and 28 V bus standards commonly found in server backplanes, industrial control racks, and telecom chassis. This wide range allows a single controller to address multiple supply rail architectures without design changes, simplifying bill-of-materials across product families.
How does the LTC4231IUD-1#PBF's latch-off protection prevent damage during a sustained overcurrent fault?
When the LTC4231IUD-1#PBF detects a sustained overcurrent condition exceeding the programmed 50 mV threshold across the sense resistor, it latches the gate drive off and requires a manual reset or power cycle to restore operation. This latch-off behavior, as opposed to auto-retry, prevents repeated large inrush currents from thermally stressing the external N-channel MOSFET and downstream components during hard fault conditions, protecting both the board and the backplane power supply.
For a 12 V telecom backplane design, how does the 12-pin QFN package of LTC4231IUD-1#PBF affect PCB layout?
The LTC4231IUD-1#PBF uses a 12-pin QFN package with a 3 mm x 3 mm body and 0.65 mm pin pitch, consuming very little board area compared to SO-8 or DIP alternatives. The exposed thermal pad on the bottom aids heat dissipation in high-current 12 V telecom hot-swap slots supporting up to 36 V bus, and the compact footprint leaves room for the external sense resistor, MOSFET, and decoupling capacitors within a tight slot card layout.
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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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| Qty. | Unit Price | Ext. Price |
|---|---|---|
| 1+ | $6.8400 | $6.84 |
| 2+ | $6.0000 | $12.00 |
| 5+ | $4.4460 | $22.23 |
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