MIC2582-MYM Microchip

MIC2582/3 Single-Channel Hot Swap Controllers Features General Description MIC2582: Pin-for-Pin Functional Equivalent to the The MIC2582 and MIC2583 are single-channel LTC1422 positive voltage hot swap controllers designed to allow the safe insertion of boards into live system 2.3V to 13.2V Supply Voltage Operation backplanes. The MIC2582 and MIC2583 are available Surge Voltage Protection up to 20V in 8-lead SOIC and 16-lead QSOP packages, Current Regulation Limits Inrush Current respectively. Using a few external components and by Regardless of Load Capacitance controlling the gate drive of an external N-Channel Programmable Inrush Current Limiting MOSFET device, the MIC2582/3 provide inrush current Electronic Circuit Breaker limiting and output voltage slew rate control in harsh, critical power supply environments. Additionally, a Optional Dual-Level Overcurrent Threshold circuit breaker function will latch the output MOSFET Detects Excessive Load Faults off if the current-limit threshold is exceeded for a Fast Response to Short-Circuit Conditions (<1 s) determined period. The MIC2583R option includes an Programmable Output Undervoltage Detection auto-restart function upon detecting an overcurrent Undervoltage Lockout (UVLO) Protection condition. Auto-Restart Function (MIC2583R) Power-on-Reset (POR) Status Output Power Good (PG) Status Output (MIC2583 and MIC2583R) /FAULT Status Output (MIC2583 and MIC2583R) Applications RAID Systems Base Stations PC Board Hot Swap Insertion and Removal +12V Backplanes Network Switches Package Types MIC2582 MIC2583/MIC2583R 8-Lead SOIC (M) 16-Lead QSOP (QS) (Top View) (Top View) /POR 1 16 VCC /POR 1 8 VCC PWRGD 2 15 SENSE ON 2 7 SENSE ON 3 14 GATE CPOR 3 6 GATE CPOR 4 13 DIS GND 4 5 FB CFILTER 5 12 FB NC 6 11 /FAULT GND 7 10 NC GND 8 9 NC 2021 Microchip Technology Inc. DS20006573A-page 1MIC2582/3 Typical Application Circuit R SENSE Q1 BACKPLANE PCB EDGE 0.006 Si7892DP CONNECTOR CONNECTOR Long Pin 2% V 12 (PowerPAK SOIC-8) IN V OUT 12V 12V 6A R1 34 3.3 **D1 (18V) C C1 LOAD 16 15 500 F 1F VCC SENSE 14 R5 GATE Short Pin 93.1k 3 ON C2 1% R2 0.01F V V LOGIC LOGIC 76.8k 1% 13 DOWNSTREAM R4 R3 DIS R7 R8 CONTROLLER MIC2583/83R 47k 9.76k 47k 47k 1% 2 PWRGD EN Power-Good Output /FAULT 11 1 /FAULT /POR /RESET Signal Power-On Reset Output Medium 12 FB (or Short) Pin CPOR GND CFILTER R6 4 7, 8 5 12.4k C3 C4 1% 0.1F 8200pF Long Pin GND *Undervoltage (Input) = 10.5V */POR Delay = 50ms *Undervoltage (Output) and *Circuit Breaker Response Time = 1.5ms Power-Good (Output) = 11.0V **D1 is BZX84C18 *START-UP Delay = 12ms *(See Functional Description and Applications Information) Functional Block Diagram MIC2583/83R 15(7) SENSE 14(6) Charge + 16(8) GATE Pump VCC 9V 21V 50mV 500 13 + DIS Circuit Breaker UVLO Trips V CC 100mV 2.2V or UVLO 6.5A I TIMER 11 /FAULT 5 CFILTER + V REF Logic 6.5A 1(1) /POR 7,8(4) GND 12(5) FB 2 + Glitch PWRGD Filter V REF V CC 2.5A I CPOR 4 (3) 3(2) CPOR + ON Glitch 0.3V Filter V REF + 1.24V V Reference REF Pin numbers for MIC2582 are in parenthesis ( ) where applicable DS20006573A-page 2 2021 Microchip Technology Inc. +