The MIC2085-JBQS and MIC2086 are single channel positive voltage hot swap controllers designed to allow the safe insertion of boards into live system backplanes. The MIC2085and 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.
Feature
- MIC2085: Pin for pin functional equivalent to the LTC1642
- 2.3V to 16.5V supply voltage operation
- Surge voltage protection to 33V
- 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 (<1µs)
- 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 overvoltageSingle Channel Hot Swap Controllers
