Electronic Components Datasheet Search
  English  ▼
ALLDATASHEET.COM

X  

SMH4812 Datasheet(PDF) 10 Page - Summit Microelectronics, Inc.

Part # SMH4812
Description  Distributed Power Hot-Swap Controller
Download  19 Pages
Scroll/Zoom Zoom In 100%  Zoom Out
Manufacturer  SUMMIT [Summit Microelectronics, Inc.]
Direct Link  http://www.summitmicro.com
Logo SUMMIT - Summit Microelectronics, Inc.

SMH4812 Datasheet(HTML) 10 Page - Summit Microelectronics, Inc.

Back Button SMH4812 Datasheet HTML 6Page - Summit Microelectronics, Inc. SMH4812 Datasheet HTML 7Page - Summit Microelectronics, Inc. SMH4812 Datasheet HTML 8Page - Summit Microelectronics, Inc. SMH4812 Datasheet HTML 9Page - Summit Microelectronics, Inc. SMH4812 Datasheet HTML 10Page - Summit Microelectronics, Inc. SMH4812 Datasheet HTML 11Page - Summit Microelectronics, Inc. SMH4812 Datasheet HTML 12Page - Summit Microelectronics, Inc. SMH4812 Datasheet HTML 13Page - Summit Microelectronics, Inc. SMH4812 Datasheet HTML 14Page - Summit Microelectronics, Inc. Next Button
Zoom Inzoom in Zoom Outzoom out
 10 / 19 page
background image
10
SMH4812
2055 4.0 12/22/00
SUMMIT MICROELECTRONICS, Inc.
Preliminary
Current Regulation
The current regulation mode is an optional feature that
provides a means to regulate current through the MOS-
FET for a programmable period of time. See Figures 5a
and 5b. If enabled the device will start the internal timer
when the voltage at CBSENSE exceeds 50mV (A & G, H).
Also, it attempts to limit the voltage at CBSENSE to 60mV
by regulating the VGATE output (B & C vs. I). The circuit
breaker will trip if the over-current condition remains after
the time-out (D, E, F; & J, K, L). However, if CBSENSE
drops below 50mV before the timer ends, the timer is reset
and VGATE resumes normal operation. If the Quick-Trip
level is exceeded then the device will bypass the current
regulation timer and shut down immediately. The Current
Regulation feature is disabled in the default configuration.
Non-Volatile Fault Latch
The SMH4812 also provides an optional nonvolatile fault
latch (NVFL) circuit breaker feature. The nonvolatile fault
latch essentially provides a programmable fuse on the
circuit breaker. When enabled the nonvolatile fault latch
will be set whenever the circuit breaker trips. Once set, it
cannot be reset by cycling power.
NOTE: THE DEVICE REMAINS PERMANENTLY DISABLED
UNTIL IT IS REPROGRAMMED AT THE FACTORY
.
As long as the NVFL is set, the FAULT# output will be
driven active. The Non-Volatile Fault Latch feature is
disabled in the default configuration.
Resetting FAULT#
When the circuit breaker trips the VGATE output is turned
off and FAULT# is driven low. In the default condition the
breaker resets automatically after a time of tCYC. In the
latched condition cycling power to the board or toggling the
EN/TS input will also reset the circuit breaker. If the over
current condition still exists after the MOSFET switches
back on, the circuit breaker will re-trip.
Figure 5.a. Current Regulation & Shutdown
Figure 5.b. Current Regulation & Shutdown
VGATE
0V
0V
FAULT#
CBSENSE
50mV
12V
1
0
A
D
C
B
E
F
2055 Fig05a
VGATE
0V
0V
FAULT#
CBSENSE
50mV
12V
1
0
G
J
H
K
I
L
2055 Fig05b


Similar Part No. - SMH4812

ManufacturerPart #DatasheetDescription
logo
Summit Microelectronics...
SMH4812 SUMMIT-SMH4812_09 Datasheet
428Kb / 18P
   Distributed Power Hot-Swap Controller
More results

Similar Description - SMH4812

ManufacturerPart #DatasheetDescription
logo
Summit Microelectronics...
SMH4803 SUMMIT-SMH4803 Datasheet
178Kb / 22P
   Distributed Power Hot-Swap Controller
SMH4812 SUMMIT-SMH4812_09 Datasheet
428Kb / 18P
   Distributed Power Hot-Swap Controller
SMH4811 SUMMIT-SMH4811 Datasheet
358Kb / 16P
   DISTRIBUTED POWER HOT SWAP CONTROLLER
logo
List of Unclassifed Man...
SMT4004 ETC-SMT4004 Datasheet
480Kb / 23P
   Distributed Power Hot-Swap Controller
logo
Summit Microelectronics...
SMH4803A SUMMIT-SMH4803A Datasheet
430Kb / 19P
   Distributed Power Hot Swap Controller
SMH4042A SUMMIT-SMH4042A Datasheet
1Mb / 28P
   Distributed Power Hot-Swap Controller for CompactPCI
SMH4811A SUMMIT-SMH4811A_09 Datasheet
936Kb / 15P
   Programmable Distributed Power Hot-Swap Controller for High-Availability Systems
logo
Linear Technology
LTC1642 LINER-LTC1642 Datasheet
147Kb / 12P
   Hot Swap Controller
LTC4218 LINER-LTC4218_15 Datasheet
318Kb / 18P
   Hot Swap Controller
LTC1421-2.5 LINER-LTC1421-2.5_15 Datasheet
334Kb / 24P
   Hot Swap Controller
More results


Html Pages

1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19


Datasheet Download

Go To PDF Page


Link URL




Privacy Policy
ALLDATASHEET.COM
Does ALLDATASHEET help your business so far?  [ DONATE ] 

About Alldatasheet   |   Advertisement   |   Datasheet Upload   |   Contact us   |   Privacy Policy   |   Link Exchange   |   Manufacturer List
All Rights Reserved©Alldatasheet.com


Mirror Sites
English : Alldatasheet.com  |   English : Alldatasheet.net  |   Chinese : Alldatasheetcn.com  |   German : Alldatasheetde.com  |   Japanese : Alldatasheet.jp
Russian : Alldatasheetru.com  |   Korean : Alldatasheet.co.kr  |   Spanish : Alldatasheet.es  |   French : Alldatasheet.fr  |   Italian : Alldatasheetit.com
Portuguese : Alldatasheetpt.com  |   Polish : Alldatasheet.pl  |   Vietnamese : Alldatasheet.vn
Indian : Alldatasheet.in  |   Mexican : Alldatasheet.com.mx  |   British : Alldatasheet.co.uk  |   New Zealand : Alldatasheet.co.nz
Family Site : ic2ic.com  |   icmetro.com