LTC4252-2IMS8 Analog Devices Integrated Circuit (Small Outline Packages) In Stock
Analog Devices LTC4252-2IMS8 is a single-channel negative-voltage Hot Swap controller that manages board insertion and removal in live backplane systems safely. It controls an external N-channel MOSFET to limit inrush current on negative supply rails typically between -36V and -72V. Available from stock with worldwide shipping.
- Manufacturer
- Analog Devices
- Package
- Small Outline Packages
- Pin Count
- 8
- Lifecycle
- ACTIVE UNCONFIRMED
- Datasheet
- LTC4252-2IMS8 Datasheet PDF
- Category
- Integrated Circuit
- 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 LTC4252-2IMS8?
- Negative-voltage Hot Swap control for safe board insertion on -48V telecom backplane rails without system disruption
- External N-channel MOSFET gate drive with programmable inrush current limiting via a single sense resistor
- Single-channel architecture in a compact MSOP-8 package minimizing board area in dense line cards
- Adjustable overcurrent and short-circuit protection preserving backplane integrity during fault conditions
- Industrial temperature range operation ensuring reliable performance in telecom and data-center environments
What is LTC4252-2IMS8 used for?
The LTC4252-2IMS8 is designed for telecom line cards and central office equipment operating on -48V DC power distribution buses, where safe hot-plug insertion is mandatory without interrupting other boards sharing the rail. It manages inrush current during card insertion by slowing the rise time of the supply voltage through external MOSFET gate control, protecting both the card and the backplane connectors. Network switches, router blades, and DSL line cards benefit from its single-channel negative-voltage architecture in space-constrained MSOP-8 footprints.
What are the specifications of LTC4252-2IMS8?
| YTEOL | 2 |
| Adjustable Threshold | NO |
| Analog IC - Other Type | HOT SWAP CONTROLLER |
| JESD-30 Code | S-PDSO-G8 |
| JESD-609 Code | e0 |
| Number of Channels | 1 |
| Number of Functions | 1 |
| Package Body Material | PLASTIC/EPOXY |
| Package Shape | SQUARE |
| Package Style | SMALL OUTLINE, THIN PROFILE, SHRINK PITCH |
| Qualification Status | Not Qualified |
| Supply Voltage-Max (Vsup) | 14.5V |
| Supply Voltage-Min (Vsup) | 11.5V |
| Supply Voltage-Nom (Vsup) | 13V |
| Surface Mount | YES |
| Technology | CMOS |
| Temperature Grade | INDUSTRIAL |
| Terminal Finish | Tin/Lead (Sn/Pb) |
| Terminal Form | GULL WING |
| Terminal Pitch | 0.65mm |
| Terminal Position | DUAL |
| Package | Small Outline Packages |
Compliance & Regulatory
| RoHS Status | Compliant |
| Lead-Free | Yes (Pb-Free) |
| Moisture Sensitivity Level | MSL 1 |
| ECCN | EAR99 |
| HTS Code | 8542.39.00.60 |
Where can I find the LTC4252-2IMS8 datasheet?
LTC4252-2IMS8 Datasheet DownloadOfficial datasheet from Analog Devices
What are equivalent replacements for LTC4252-2IMS8?
No known alternates. Submit an RFQ and our team can suggest alternatives.
Frequently Asked Questions
Which supply voltage range does LTC4252-2IMS8 target, and why is that range significant for telecom applications?
LTC4252-2IMS8 is designed for negative supply rails spanning approximately -36V to -72V, covering the standard -48V telecom distribution bus used in central office and data-center power systems. Managing hot-plug events at these voltages without a dedicated controller risks damaging backplane connectors and adjacent line cards sharing the same rail.
How does the external MOSFET sense resistor set the inrush current limit in LTC4252-2IMS8 designs?
A sense resistor placed in series with the drain of the external N-channel MOSFET generates a voltage drop that the LTC4252-2IMS8 monitors to clamp inrush current. Selecting a 10 mΩ resistor, for example, limits peak current to approximately 50A before the controller reduces gate drive, protecting downstream capacitors from excessive charge current during board insertion.
When is LTC4252-2IMS8 preferable to a positive-voltage Hot Swap controller like LTC4251 in a system design?
LTC4252-2IMS8 is the correct choice whenever the board is powered from a negative supply rail such as -48V, because it drives an N-channel MOSFET in the high-side position of a negative rail—a topology that positive-voltage controllers cannot handle. Using LTC4252-2IMS8 avoids the level-shifting complications of adapting a positive-rail Hot Swap controller to a -48V bus.
How compact is the MSOP-8 package of LTC4252-2IMS8, and does it affect thermal performance?
The MSOP-8 (JEDEC MO-187) measures approximately 3 mm × 3 mm with 0.65 mm pin pitch, occupying roughly 9 mm² of board area. Since LTC4252-2IMS8 drives an external MOSFET for power handling rather than dissipating power itself, the small package does not create a thermal bottleneck under normal operating conditions up to 125°C ambient.
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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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