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LT3640 Просмотр технического описания (PDF) - Linear Technology

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LT3640 Datasheet PDF : 24 Pages
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Block Diagram
2µA
EN/
UVLO 100k
5.5V
+
ENABLE
A4
LT3640
CIN
VIN
+A3
RQ
S
DRIVER
BST
Q1
SW
DBST
CBST
SS1
R2
VOUT1
FB1
R1
VREF
1.265V
2µA
+ gm1
+–
VC1
3
RAMP
GENERATOR
OSCILLATOR
+
–+
A8
3
A1
A2
A5
2µA
SS2
R4
VOUT2
FB2
R3
PGOOD
+ gm2
+–
+
VC2 A7
+
50mV
–+
A9
VREF
600mV
S
RQ
LOGIC
CIRCUIT
A6
2µA
CPOR
POR TIMER
RST1 RST2
2µA
WATCHDOG
TIMER
WDE WDI WDO
SW1
DA
L1
D1
VOUT1
COUT1
RT
SYNC
SW2
VIN2
CIN2
L2 VOUT2
COUT2
EN2
CWDT
3640 BD
3640f


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