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SC1154CSW датащи(PDF) 8 Page - Semtech Corporation

номер детали SC1154CSW
подробное описание детали  PROGRAMMABLE SYNCHRONOUS DC/DC HYSTERETIC CONTROLLER FOR ADVANCED PROCESSORS
PDF  18 Pages
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производитель  SEMTECH [Semtech Corporation]
домашняя страница  http://www.semtech.com
Logo SEMTECH - Semtech Corporation

SC1154CSW датащи(HTML) 8 Page - Semtech Corporation

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SC1154
PROGRAMMABLE SYNCHRONOUS
DC/DC HYSTERETIC CONTROLLER
FOR ADVANCED PROCESSORS
© 2000 SEMTECH CORP.
652 MITCHELL ROAD NEWBURY PARK CA 91320
PRELIMINARY - March 1, 2000
8
ELECTRICAL CHARACTERISTICS (cont.)
Unless specified: 0 < T
J < 125° C, VIN12V = 12V
PARAMETER
SYMBOL
CONDITIONS
MIN
TYP
MAX
UNITS
HIGH-SIDE Vds SENSING
(1)
Response Time
t
VDSRESP
V
HISENSE = 12v,
V
IOUTLO
pulsed from 12v to 11.9v,
100ns rise and fall times
2µs
V
HISENSE = 4.5v,
V
IOUTLO
pulsed from 4.5v to 4.4v,
100ns rise and fall times
3µs
V
HISENSE = 3v,
V
IOUTLO
pulsed from 3.0v to 2.9v,
100ns rise and fall times
3µs
Short Circuit Protection
Rising Edge Delay
t
VDSRED
LOSENSE grounded
300
500
ns
Sample/Hold Switch turn-
on/turn-off Delay
t
SWXDLY
3v < V
HISENSE < 11v
V
LOSENSE = VHISENSE
30
100
ns
POWER GOOD
Comparator Propagation
Delay
t
PWRGD
1µs
SOFTSTART
Comparator Propagation
Delay
t
SLST
overdrive = 10mv
560
900
ns
DEADTIME
Driver Nonoverlap Time
t
NUL
30
100
ns
Note 1: Guaranteed, but not tested



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