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LT3752 데이터시트(PDF) 17 Page - Analog Devices

부품명 LT3752
상세설명  Active Clamp Synchronous Forward Controllers with Internal Housekeeping Controller
PDF  52 Pages
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제조업체  AD [Analog Devices]
홈페이지  http://www.analog.com
Logo AD - Analog Devices

LT3752 데이터시트(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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