LT3756-2_15 Datasheet, PDF (9/24 Pages) Linear Technology – 100VIN, 100VOUT LED Controller

Block Diagram
LT3756/LT3756-1/LT3756-2
SHDN/UVLO – A6
1.22V ⁺
2.1µA
FB
SHDN
1.25V
+ ^A5
–^gm
VC
–
+
1.3V
OVFB
COMPARATOR
10µA AT
FB = 1.25V
PWMOUT PWM
1.25V
– ^LDO
+^A8
V_IN
7.15V INTV_CC
SHORT-CIRCUIT
DETECT ₊
–+ ^150mV
–^A10
ISN
SCILMB
g_m
+ ^EAMP
ISP
5k
–^A1
CTRL
CTRL
+ ^BUFFER
1.1V +–A3
Q2
V_REF
–
+^A7
2V
50k
140µA
FAULT
LOGIC
170k
T_LIM
165°C
10µA
10µA AT
A1⁺ = A1^–
SCILMB
+
–^A2 _PWM
COMPARATOR
VC
SSCLAMP
RAMP
GENERATOR
10µA
1.25V
100kHz TO 1MHz
OSCILLATOR
+
+– _FREQ
PROG
RQ
S
DRIVER
I_SENSE
A4
–
1.2V
FB ⁺
GATE
SENSE
GND
OPENLED
(LT3756
AND
LT3756-2)
SS
RT SYNC (LT3756-1 ONLY)
375612 BD
375612fb