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SS6577CSTR датащи(PDF) 4 Page - Silicon Standard Corp.

номер детали SS6577CSTR
подробное описание детали  External NMOS Step-Down PWM Controller
PDF  14 Pages
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производитель  SSC [Silicon Standard Corp.]
домашняя страница  http://www.siliconstandard.com
Logo SSC - Silicon Standard Corp.

SS6577CSTR датащи(HTML) 4 Page - Silicon Standard Corp.

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SS6577
Rev.1.02 3/26/2004
ELECTRICAL CHARACTERISTICS (Continued)
PARAMETER
TEST CONDITIONS
MIN.
TYP.
MAX.
UNIT
DRI Rise Time
CLOAD = 3000PF
50
75
ns
DRI Fall Time
CLOAD = 3000PF
50
75
ns
BOOST Voltage
VIN=8V, IBOOST=5mA, SW=0V
4.9
5.3
5.7
V
Maximum Duty Cycle
90
94
%
Soft Start Time
5
7.5
ms
Run Current Source
VITH/RUN=0V, VFB=0V
1.0
2.3
4.0
µA
Run Pullup Current
VITH/RUN=1V
100
190
250
µA
Note 1:
Absolute Maximum Ratings are those values beyond which the life of a device may be impaired.
Note 2:
Dynamic supply current is higher due to the gate charge being delivered at the switching frequency.
TYPICAL PERFORMANCE CHARACTERISTICS
1
10
100
1000
10000
70
75
80
85
90
95
100
VIN=6V
Load Current (mA)
VIN=12V
VIN=19V
VOUT=3.3V
Fig. 1 Efficiency vs Load Current (VOUT=3.3V)
Load Current (mA)
Fig. 2 Efficiency vs Load Current (VOUT=5.0V)
1
10
100
1000
10000
70
75
80
85
90
95
100
VOUT=5V
VIN=6V
VIN=12V
VIN=19V



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