LT3755 LINER [Linear Technology], LT3755 Datasheet - Page 9

• Manufacturer Part Number: LT3755
• Description: 40VIN, 75VOUT LED Controller
• Manufacturer: LINER [Linear Technology]

BLOCK DIAGRAM
SHDN/UVLO
ISN
ISP
CTRL
V
REF
2V
1.22V
2μA
+
–
1.1V
SHORT-CIRCUIT
150mV
–
+
DETECT
A7
–
+
+
+
–
A3
A6
BUFFER
CTRL
+
–
A10
SHDN
1.25V
5k
140μA
SCILMB
FB
Q2
50k
+
–
+
–
g
A1
m
EAMP
A5
LOGIC
g
FAULT
TSD
m
VC
10μA AT
FB = 1.25V
10μA AT
A1
+
= A1
1.3V
10μA
SSCLAMP
10μA
–
COMPARATOR
–
+
SCILMB
SS
1.25V
OVFB
VC
+
–
COMPARATOR
+
+
–
A2
PWM
PROG
FREQ
50KHz TO 1MHz
OSCILLATOR
GENERATOR
PWMOUT
RAMP
RT
PWM
1.25V
SYNC
R
OPTION FOR
LT3755-1
1.2V
S
LT3755/LT3755-1
FB
–
+
A8
Q
LDO
–
+
I
DRIVER
SENSE
A4
V
+
–
7V
IN
OPENLED
OPTION
FOR
LT3755
INTV
SENSE
GATE
GND
37551 BD
CC
37551fa
9