SMH4044 Datasheet | Summit Microelectronics

Features ! IPMI Implementation " IPMB Interface " Software Controlled Power-Up/-Down " Status Reporting: 5V, 3.3V, V1, V2, Healthy, Signal Valid, Reset " 2k-Bit E2PROM Memory ! Full Voltage Control for Hot Swap Applications " Detect, Monitors and Controls up to 4 independent supplies ! 14V High Side Driver Generation Allows use of Low On Resistance N-Channel FETs ! Under-Voltage Lockout Preliminary ! Electronic Circuit Breakers " Programmable Over-current Levels ! Card Insertion Detection ! Card Voltage Sequencing ! Flexible Reset Control " Low Voltage Resets " Host Reset Filtering " Soft Reset ! Adjustable Power On Slew Rate SIMPLIFIED APPLICATION DRAWING pact PCI Backplane 12V 5V 4.7kΩ 0.33µF 10Ω 330kΩ DRVREN# 45 0.1µF 5V 1N4148 42 IPMB_SDA IPMB_SCL GAO GA1 GA2 26 27 7 11 12 20 16 15 6 18 19 SDA SCL A0 VCC 44 CBI_5 41 VGATE5 40 CARD_5V_MON 12V A1 A2 SGNL_VLD# BD_SEL1# BD_SEL2# MONITOR1 LOCAL_PCI_RST CBI_3 36 VGATE3 34 CARD_3V_MON 33 29 MONITOR 2 30 GND HST_ HEALTHY# 3V_MON 35 3.3V 3.3V 2057 SAD-A Simplified Application Drawing - Triple Voltage Hot Swap (12V, 5V, 3.3V) ©SUMMIT MICROELECTRONICS, Inc., 2001 - 300 Orchard City Dr., Suite 131 - Campbell, CA 95008 - Phone 408-378-6461 - FAX 408-378-6586 - .summitmicro. Characteristics subject to change without notice 2057 1.x 8/16/01 .. Preliminary The internal 256 × 8 E2PROM can be used as configuration memory for the individual card or as general purpose memory. Programming of configuration, control and calibration values by the user can be simplified with the interface adapter and Windows GUI software obtainable from Summit Microelectronics. DESCRIPTION The SMH4044 is a fully integrated hot swap controller that provides plete power control for add-in cards ranging in use for basic hot swap systems to high availability systems. It detects proper insertion of the card and senses valid supply voltage levels at the backplane. Utilizing external low on-resistance N-channel MOSFETs,...