Features and Benefits
- Allows Safe Board Insertion and Removal from a Live PCI Slot
- Controls 3.3V, 5V, –12V, 12V and 3.3V Auxiliary Supplies
- Independent 3.3V Auxiliary Supply Hot Swap™ Controller
- Adjustable Foldback Current Limit with Circuit Breaker
- Adjustable Supply Voltage Power-Up Rate
- High Side Drive for External N-Channel FETs
- –12V and 12V On-Chip Switches
- Fault and Power Good Outputs
The LTC4241 is a Hot Swap controller that allows a board to be safely inserted and removed from a live PCI-bus slot. It has a primary controller that controls the four PCI supplies and an independent auxiliary controller to controlthe 3.3V auxiliary supply. External N-channel transistors are used to control the 3.3V, 5V and 3.3V auxiliary supplies while on-chip switches control the –12V and 12V supplies. The 3.3V, 5V and 3.3V auxiliary supplies can be ramped upat an adjustable rate. Electronic circuit breakers protect all five supplies against overcurrent faults. The foldback current limit feature reduces current spikes and power dissipation when shorts occur. The PWRGD output of the primary controller indicates when all four PCI supplies are within tolerance. The FAULT output indicates an overcurrent condition for any of the five supplies.
The LTC4241 is available in the 20-pin narrow SSOP package.
- PCI-Based Servers
- Computer Systems
Product Lifecycle Recommended for New Designs
This product has been released to the market. The data sheet contains all final specifications and operating conditions. For new designs, ADI recommends utilization of these products.
ADI has always placed the highest emphasis on delivering products that meet the maximum levels of quality and reliability. We achieve this by incorporating quality and reliability checks in every scope of product and process design, and in the manufacturing process as well. "Zero defects" for shipped products is always our goal.
Sample & Buy
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