SC4250LISTRT vs ISL61862GCRZ
| Part Number |
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| Category | PMIC - Hot Swap Controllers | PMIC - Hot Swap Controllers |
| Manufacturer | Semtech Corporation | Intersil |
| Description | IC HOT SWAP CTRLR -48V 8SO | IC USB PWR CTRLR 3A 8DFN |
| Package | Tape & Reel (TR) | 8-VDFN Exposed Pad |
| Series | - | - |
| Type | Hot Swap Controller | Hot Swap Controller |
| Features | Auto Retry, Fault Timeout | Fault Timeout, Latched Fault, Thermal Limit, Turn On Voltage, UVLO |
| Voltage - Supply | 10V ~ 80V | 2.5 V ~ 5.5 V |
| Operating Temperature | -40°C ~ 125°C | 0°C ~ 70°C |
| Mounting Type | Surface Mount | Surface Mount |
| Package / Case | 8-SOIC (0.154\", 3.90mm Width) | 8-VDFN Exposed Pad |
| Supplier Device Package | 8-SO | 8-DFN (3x3) |
| Current - Supply | 3 mA | 57µA |
| Applications | -48V | USB |
| Current - Output (Max) | - | 3A |
| Number of Channels | 1 | 2 |
| Internal Switch(s) | No | Yes |
| Programmable Features | OVP, Slew, UVLO | - |
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1. How does a PMIC hot-swap controller work?
A hot-swap controller protects system components by limiting inrush current during insertion. It monitors parameters such as current and voltage and triggers protection mechanisms such as overcurrent protection or disconnection of power when they exceed the safe range.
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2. What is the difference between a hot-swap controller and a power switch?
Hot-swap controllers actively manage current and voltage changes during the plug-in process, while ordinary power switches only have simple on-off functions and cannot provide protection and control functions.
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3. How do hot-swap controllers prevent inrush current?
Through internal current limiting circuits, hot-swap controllers control the rate of current increase at the moment of insertion to avoid damage to the system due to instantaneous inrush current. At the same time, the settable soft start function helps to load the voltage smoothly.
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4. Can the current limit value of the hot-swap controller be adjusted?
Yes, many hot-swap controllers allow users to adjust the current limit value through external resistors or programming interfaces to adapt to different load requirements and circuit conditions.
