
The MAX5949A/MAX5949B are hot-swap controllers that allow a circuit card to be safely hot plugged into a live backplane. The MAX5949A/MAX5949B operate from -20V to -80V and are well-suited for -48V power systems. These devices are pin and function compatible with the LT4250 and pin compatible with the LT1640.The MAX5949A/MAX5949B provide a controlled turn-on to circuit cards preventing glitches on the power-supply rail and damage to board connectors and components. The MAX5949A/MAX5949B provide undervoltage, overvoltage, and overcurrent protection. These devices ensure the input voltage is stable and within tolerance before applying power to the load.Both the MAX5949A and MAX5949B protect a system against overcurrent and short-circuit conditions by turning off the external MOSFET in the event of a fault condition. The MAX5949A/MAX5949B also provide protection against input voltage steps. During an input voltage step, the MAX5949A/MAX5949B limit the current drawn by the load to a safe level without turning off power to the load.Both devices feature an open-drain power-good status output (PWRGD-bar for the MAX5949A or PWRGD for the MAX5949B) that can be used to enable downstream converters.The MAX5949A/MAX5949B are available in an 8-pin SO package. Both devices are specified for the extended -40°C to +85°C temperature range.
YG GROUP (YUGUANG INTERNATIONAL(HK)CO.,LTD) supports reliable sourcing through quality controls and compliance documentation. Please confirm product requirements, applicable certifications and supporting documents before ordering.
MAX5949B is an authentic electronic component manufactured by Analog Devices, categorized under Power Management ICs. It is supplied in the standard manufacturer-specified package footprint, providing industry-standard mechanical dimensions and terminal configurations for board-level assembly. Full pinout configurations, physical footprint drawings, and rated operating tolerances are documented in the official MAX5949B datasheet above.
Electronic component spot-market pricing for MAX5949B fluctuates based on real-time global availability, production date codes, minimum order quantities (MOQ), and packaging formats (e.g., Reel, Tube, Tray). Using an RFQ ensures you receive accurate, real-time volume pricing tied to verified, traceable inventory rather than stale catalog estimates.
Lead times for MAX5949B depend on whether stock is dispatched from our central hub or regional franchise partners. Ready-to-ship inventory typically leaves the warehouse within 1–3 business days following quality inspection, while factory-direct or back-ordered allocations are confirmed with an estimated ship date upon RFQ reply.
Loading articles…
Loading articles…

Buying GRM155C80J106ME11D for a compact board? Compare effective capacitance, bias and packaging—not 10 µF alone. Send your rail requirements for an RFQ.
Read more →
Sourcing TPS53915RVER for a server rail? Map 12-A loads, bias supplies and PMBus functions before buying. Send your power-rail requirements for an RFQ.
Read more →
Replacing a relay with TPS1HB16AQPWPRQ1? Check inrush, A-version current limits and fault recovery before ordering. Send your 12-V load brief for an RFQ.
Read more →
Adding W5500 Ethernet to an MCU? Budget IPv4 sockets, SPI transfers and buffers before buying the network BOM. Send your board requirements for an RFQ.
Read more →Loading related products…
| Picture | Part Number | Manufacturer | PDF / RoHS | Stock | Action |
|---|---|---|---|---|---|
![]() | Analog Devices | 7,300 | |||
![]() | Analog Devices | 1,690 | |||
![]() | Analog Devices | 8,840 | |||
![]() | Analog Devices | 3,390 | |||
![]() | Analog Devices | 9,690 | |||
![]() | Analog Devices | 5,750 | |||
![]() | Analog Devices | 4,650 | |||
![]() | Analog Devices | 4,610 | |||
![]() | Analog Devices | 5,440 | |||
![]() | Analog Devices | 5,600 |