LTC3805-5 Linear Technology, LTC3805-5 Datasheet - Page 7

• Manufacturer Part Number: LTC3805-5
• Description: Adjustable Frequency Current Mode Flyback DC/DC Controller
• Manufacturer: Linear Technology

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BLOCK DIAGRAM
11
1
8
3
SSFLT
OC
FB
GND
REFERENCE
I
SHUTDOWN
TH
800mV
CLAMPS
100mV
10μA
–
+
1.2V
+
–
SOFT-START RAMP
OVERCURRENT
COMPARATOR
ERROR
AMPLIFIER
2
I
TH
SOFT-START
FAULT
20mV
–
+
9
CURRENT
COMPARATOR
V
OSCILLATOR
CC
5
FS
SHUTDOWN
6
R
S
SYNC
4
RUN
Q
UNDERVOLTAGE
SWITCHING
LOGIC AND
LOCKOUT
BLANKING
CIRCUIT
CURRENT
SLOPE
COMP
RAMP
LTC3805-5
GATE
DRIVER
ISENSE
GATE
38055 BD
10
7
38055fa
7