Microchip | MIC2085-JYQS

The MIC2085-JYQS is a single channel positive voltage hot swap controllers designed to allow the safe insertion of boards into live system backplanes.

The MIC2085 and MIC2086 are available in 16-pin and 20-pin QSOP packages, respectively. Using a few external components and by controlling the gate drive of an external N-Channel MOSFET device, the MIC2085/86 provide inrush current limiting and output voltage slew rate control in harsh, critical power supply environments. Additionally, a circuit breaker function will latch the output MOSFET off if the current limit threshold is exceeded for a programmed period of time. The devices’ array of features provide a simplified yet robust solution for many network applications in meeting the power supply regulation requirements and affords protection of critical downstream devices and components.

Key Features:

• MIC2085: Pin for pin functional equivalent to the LTC1642.
• 2.3 V to 16.5 V supply voltage operation.
• Surge voltage protection to 33 V.
• Operating temperature range –40°C to 85°C.
• Active current regulation limits inrush current independent of load capacitance.
• Programmable inrush current limiting.
• Analog foldback current limiting.
• Electronic circuit breaker.
• Dual-level overcurrent fault sensing.
• Fast response to short circuit conditions (< 1 µs).
• Programmable output undervoltage detection.
• Undervoltage lockout protection.
• Power-on reset (MIC2085/86) and power-good (MIC2086) status outputs.
• /FAULT status output.
• Driver for SCR crowbar on overvoltage.

Applications:

• RAID systems.
• Cellular base stations.
• LAN servers.
• WAN servers.
• InfiniBand™ Systems.
• Industrial high side switching.