MIC2589 Datasheet | Micrel Semiconductor

MIC2589/2595 Micrel MIC2589/MIC2595 Single-Channel, Negative High-Voltage Hot Swap Power Controllers/Sequencers General Description Features The MIC2589 and MIC2595 are single-channel, negative- Provides safe insertion and removal from live voltage hot swap controllers designed to address the need for - 48V (nominal) backplanes safe insertion and removal of circuit boards into “live” system - Operates from - 19V to - 80V backplanes, while using few external ponents. The - Fast responding circuit breaker (<1µs) to short circuit MIC2589/89R and the MIC2595/95R are each available in conditions 14-pin SOIC packaging and work in conjunction with an - User-programmable overcurrent detector response time external N-Channel MOSFET for which the gate drive is - Electronic circuit breaker function: controlled to provide inrush current limiting and output volt Output latch OFF (MIC2589/95) or age slew-rate control. Overcurrent fault protection is also Output auto-retry (MIC2589R/95R) provided for which the overcurrent threshold and the - Active current regulation precisely controls inrush overcurrent duration are programmable. Very fast fault recurrents sponse is provided to ensure that system power supplies - Regulated maximum output currents into faults maintain regulation even during output short circuits. This - Programmable undervoltage and overvoltage lockouts family offers two responses to a circuit breaker fault condition: (MIC2589/89R) the MIC2589 and MIC2595 latch the circuit breaker’s output - Programmable UVLO hysteresis (MIC2595/95R) off if the overcurrent threshold interval is exceeded while the - Staggered ‘Power-Good’ outputs provide load MIC2589R and MIC2595R automatically attempt to restart at sequencing a fixed duty cycle after a current limit fault. A primary - Fault reporting: Power-Good signal and two secondary (delayed and stag Active-HIGH (MIC25XX-1) and Active-LOW gered) Power-Good signals are provided to indicate that the (MIC25XX-2) Power-Good...