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LT3752 датащи(PDF) 17 Page - Analog Devices

номер детали LT3752
подробное описание детали  Active Clamp Synchronous Forward Controllers with Internal Housekeeping Controller
PDF  52 Pages
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производитель  AD [Analog Devices]
домашняя страница  http://www.analog.com
Logo AD - Analog Devices

LT3752 датащи(HTML) 17 Page - Analog Devices

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LT3752/LT3752-1
17
Rev. C
For more information www.analog.com
TIMING DIAGRAMS
Figure 3. LT3752 Start-Up and Shutdown Timing Diagram
SYSTEM INPUT (MIN)
+VHYST
1.25V
0V
0V
0V
0V
0V
0V
0V
0Hz
7V (REG)
150mV
1.25V
4.75V UVLO(+)
PGOOD(+)
(96% OF FULL-SCALE VHK)
COMPLETED SOFT-STOP
SHUTDOWN:
0.6V < UVLO_VSEC < 1.25V
AND SS1 < 150mV
SS1
SOFT
STARTS
fOSC AND
DVSEC
SS2
SOFT
STARTS
COMP
SS1
SOFT
STOPS
fOSC,DVSEC
AND COMP
OPTIONAL
BOOTSTRAP
DIODE
FROM VHK
SYSTEM INPUT (MIN)
SYSTEM INPUT
(LT3752 VIN PIN)
UVLO_VSEC
(RESISTOR DIVIDER
FROM SYSTEM INPUT)
VHK
(HOUSEKEEPING
SUPPLY OUTPUT)
SS1
COMP
SS2
fOSC
(SWITCHING
FREQUENCY)
INTVCC
TRIGGER
SOFT STOP
COMP
SWITCHING
THRESHOLD
1.25V
FULL-SCALE fOSC
3752 F03
AOUT, OUT, SOUT
SWITCHING
HOUT
SWITCHING
FULL-SCALE fOSC/4.6



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