LT3756-1 LINER [Linear Technology], LT3756-1 Datasheet - Page 10

• Manufacturer Part Number: LT3756-1
• Description: 60VIN LED Controller with Internal PWM Generator
• Manufacturer: LINER [Linear Technology]

LT3761
R
block Diagram
10
I
LED
LED
V
PWM
CTRL
ISP
ISN
FB
V
EN/UVLO
REF
C
1.22V
2.3µA
2.02V
CLAMP
–
+
100mV
F2(I
1V
A6
–
+
F1(I
DIM/SS
A7
×1/4
DIM/SS
SHDN
)
BUFFER
A3
CTRL
REFERENCE
BANDGAP
1.25V
)
185µA
CC EAMP
CV EAMP
FAULT
1.5mA
–
+
+
–
g
g
ISP > ISN + 0.6V
m
m
0.8V + F3(I
A1
A5
T > 165°C
DIM/SS
0.8V
)
10µA
10µA AT
A1
10µA AT
FB = 1.25V
FAULT
LOGIC
FAULT
–
+
–
+
+
= A1
–
1.3V
FB
R
I
DETECT
S
DIM_SS
COMPARATOR
–
+
Q
DIM/SS
OVFB
1V
CURRENT MODE
COMPARATOR
PWMINT
12µA
+
+
–
+
–
A2
PROG
FREQ
100kHz TO 1MHz
OSCILLATOR
GENERATOR
PWMOUT
RAMP
RT
ISN
1.25V
25mV
1.2V
PWM LATCH
ISP
FB
PWMINT
R
–
+
S
A8
LDO
+
–
–
+
Q
I
SENSE
DRIVER
OPENLED
LOGIC
A4
+
–
+
–
V
7.85V
IN
OPENLED
105mV
INTV
SENSE
GATE
GND
CC
3761 BD
I
SWITCH
R
SNS
3761f