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SMH4042S-BLN Datasheet(PDF) 1 Page - Summit Microelectronics, Inc.

No. de pieza SMH4042S-BLN
Descripción Electrónicos  Hot Swap??Controller
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Fabricante Electrónico  SUMMIT [Summit Microelectronics, Inc.]
Página de inicio  http://www.summitmicro.com
Logo SUMMIT - Summit Microelectronics, Inc.

SMH4042S-BLN Datasheet(HTML) 1 Page - Summit Microelectronics, Inc.

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SUMMIT MICROELECTRONICS, Inc.
300 Orchard City Drive, Suite 131
Campbell, CA 95008
Telephone 408-378-6461
Fax 408-378-6586
www.summitmicro.com
1
Characteristics subject to change without notice
© SUMMIT MICROELECTRONICS, Inc. 1999
2037 8.0 8/8/00
SUMMIT
MICROELECTRONICS, Inc.
SMH4042
FEATURES
Full Voltage Control for Hot Swap Applications
CompactPCI High Availability Compatible
-
On-board 15V High Side Driver Generation
Allows use of Low On-resistance N-Channel FETS
-
Undervoltage Lockout
-
Electronic Circuit Breakers
-
Card Insertion Detection
-
Host VCC Detection
-
Card Voltage Sequencing
Flexible Reset Control
-
Low Voltage Resets
-
Host Reset Filtering
-
Soft Reset
Adjustable Power-on Slew Rate
Supports Mixed Voltage Cards
Integrated 4K Bit 2-Wire E2PROM Memory
-
Data Download™ Mode [Simplifies
Downloading of Configuration Memory into
Interface ASIC or MCU]
APPLICATIONS
CompactPCI Hot Swap Control
VME Live Insertion Control
Hot Swap™ Controller
DESCRIPTION
The SMH4042 is a fully integrated hot swap controller that
provides complete 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, card power is ramped by two high-side driver
outputs that are slew-rate limited at 250V/s.
The SMH4042 continuously monitors the host supplies,
the add-in card supplies and the add-in card current. If the
SMH4042 detects the current is higher than the pro-
grammed value it will shut down the MOSFETs and issue
a fault status back to the host.
The on board E2PROM can be used as configuration
memory for the individual card or as general purpose
memory. The proprietary DataDownload mode provides
a more direct interface to the E2PROM, simplifying access
by the add-in card’s controller or ASIC.
FUNCTIONAL BLOCK DIAGRAM
ASSOCIATE
MEMBER
VGATE3
VGATE5
BD_SEL1#
SGNL_VLD#
HEALTHY#
VCC5
HST_3V_MON
PCI_RST#
CARD_3V_MON
CARD_5V_MON
+
-
LOCAL_PCI_RST#
LOCAL_PCI_RST
DRVREN#
+
-
+
-
EEPROM
Memory
Array
A2
SCL
SDA
A1
A0
BD_SEL2#
+
-
-
-
PWR_EN
FAULT#
1Vref
1.25V
Slew Rate
Control
Charge
Pump
Ref
Voltage
Control
Circuitry
50mV
50mV
CBI_3
CBI_5
2037 ILL2.2


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