参数资料
型号: LT3751IFE#TRPBF
厂商: LINEAR TECHNOLOGY CORP
元件分类: 电源管理
英文描述: 1-CHANNEL POWER SUPPLY SUPPORT CKT, PDSO20
封装: 4.40 MM, LEAD FREE, PLASTIC, TSSOP-20
文件页数: 34/34页
文件大小: 403K
代理商: LT3751IFE#TRPBF
LT3751
9
3751fb
BLOCK DIAGRAM
+
FB
CSN
CSP
LVGATE
HVGATE
CLAMP
3751 BD
START-UP
ONE-SHOT
CHARGE
VCC
OTLO
MASTER
LATCH
S
Q
R
Q
ENABLE
GATE
DRIVER
ON
OFF
DONE
FAULT
100k
10μF
100k
S
Q
R
Q
VCC
12V
INTERNAL
UVLO
3.8V
VCC
+
+
+
55V
UVLO1
OVLO1
UVLO2
OVLO2
55V
RUVLO1
191k
RUVLO2
191k
ROVLO1
240k
ROVLO2
240k
1.22V
REFERENCE
UVLO/OVLO
COMPARATORS
RBG
1.33k
GND
RBG
TO VOUT
COMPARATOR
VOUT
COMPARATOR
+
DCM
ONE-SHOT
+
DCM
COMPARATOR
26kHz ONE-SHOT
CLOCK
S
R
Q
COUNTER
26kHz
ONE-SHOT
CLOCK
SWITCH
LATCH
0.98V
REFERENCE
DIFF. AMP
COMPARATOR
WITH
INTERNAL
60V CLAMPS
1.22V
REFERENCE
GATE DRIVE
CIRCUITRY
60V
RVOUT
60V
RDCM
+
+
+
RESET
CLK
COUNT
+–
TIMING AND PEAK
CURRENT CONTROL
+
26kHz
ONE-SHOT
CLOCK
MODE
CONTROL
DIE
TEMP
160C
1.22V
REFERENCE
60V
RVOUT
40.2k
RDCM
18.2k
M1
VCC
RSENSE
12mΩ
ERROR
AMP
A1
11mV TO 106mV
MODULATION
106mV
162mV
RVTRANS
40.2k
10μF
47μF
×2
D1
T1
1:10
PRIMAR
Y
SECONDAR
Y
+
VOUT
450V
COUT
RFBH
3.65M
RFBL
10k
VTRANS
12V
VTRANS
VCC
TO CHARGE
ONE-SHOT
VCC
VDRAIN
10nF
AUXILIARY
MAIN
FAULT
LATCH
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