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SC1154CSW датащи(PDF) 7 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) 7 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
7
ELECTRICAL CHARACTERISTICS (cont.)
Unless specified: 0 < T
J < 125°C, VIN12V = 12V
PARAMETER
SYMBOL
CONDITIONS
MIN
TYP
MAX
UNITS
HIGH-SIDE OUTPUT DRIVER (cont.)
Output Resistance
Rsrc
HIGHDR’
T
J = 125°C
V
BOOT - VBOOTLO = 6.5V,
V
HIGHDR = 6V
45
Ω
Rsink
HIGHDR
T
J = 125°C
V
BOOT - VBOOTLO = 6.5V,
V
HIGHDR = 0.5V
5
LOW-SIDE OUTPUT DRIVER
Peak Outout Current
Isrc
LOWDR’
Isink
LOWDR
duty cycle < 2%, tpw < 100us,
T
J = 125°C
V
DRV = 6.5V, VLOWDR = 1.5V
(src), or V
LOWDR = 5V (sink)
(Note 1)
2
A
Output Resistance
Rsrc
LOWDR’
T
J = 125°C
V
DRV = 6.5V, VLOWDR = 6V
45
Ω
Rsink
LOWDR
T
J = 125°C
V
DRV = 6.5V, VLOWDR = 0.5V
5
HYSTERETIC COMPARATORS
(1)
Propagation Delay Time
from
VSENSE to HIGHDR or
LOWDR (excluding
deadtime)
t
HCPROP
10mV overdrive,
1.3V < Vref < 3.5V
150
250
ns
OUTPUT DRIVERS
HIGHDR rise/fall time
tr
HIGHDR
,tfHIGHDR
Cl = 9nF,
V
BOOT = 6.5v,
V
BOOTLO = grounded,
T
J = 125 °C
60
ns
LOWDR rise/fall time
tr
LOWDR ,
tf
LOWDR
Cl = 9nF,
V
DRV = 6.5v,
T
J = 125 °C
60
ns
OVERCURRENT PROTECTION
(1)
Comparator Propagation
Delay Time
t
OCPROP
1µs
Deglitch Time
t
OCDGL
13
µs
OVERVOLTAGE PROTECTION
Comparator Propagation
Delay Time
t
OVPROP
1µs
Deglitch Time
t
OVDGL
13
µs



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