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LT3756 Datasheet(PDF) 12 Page - Analog Devices

Part # LT3756
Description  60VIN/120VOUT Dual LED Controller with Exponential PWM and Scalable Dimming
PDF  31 Pages
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Manufacturer  AD [Analog Devices]
Direct Link  http://www.analog.com
Logo AD - Analog Devices

LT3756 Datasheet(HTML) 12 Page - Analog Devices

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LT8355-1
12
Rev. A
For more information www.analog.com
BLOCK DIAGRAM
R
R
100kHz TO 2MHz
OSCILLATOR
PWMTG1
4R
LOG
SCALE
ADC
0.4V
R
=
S
Q
COUNT
OVRFW
1.6V
PWM1
PWM1
ISP1
ISP1 – 8.5V
VC1
CTRL1
ISN1
ISP1
670mV
25mV
OC1
C/10-1
1.2V
FBOK1
FB1
0.3V
1.26V
FBOC1
FBOV1
GATE1
SENSEP1
R
S
Q
SLOPE COMP
PWMTG2
[4R, 512R]
SET BY DAC
LOG
SCALE
ADC
0.4V
R
=
S
Q
COUNT
OVRFW
1.6V
PWM2
PWM2
VC2
CTRL2
ISN2
ISP2
IADJ2
ADC
OC2
C/10-2
1.2V
FBOK2
FB2
0.3V
1.26V
FBOC2
FBOV2
GATE2
SENSEP2
R
S
Q
SLOPE COMP
GND
VREF
1V
RT
SOFT START
FAULT LOGIC
VIN
EN/UVLO
INTVCC
VIN
1.25V
SHDN
SENSEN1
SENSEN2
FSW1/1000
2V REF
2.4µA
FAULT2
FVOV2
OC2
FVOC2
C/10-2
FB2>1.14V
FAULT1
FVOV1
OC1
FVOC1
C/10-1
FB1>1.14V
ISP2
ISP2 – 8.5V
670mV
25mV
22
28
27
26
4
3
2
6
7
1
10
29
5
17
11
21
13
9
8
20
19
18
25
24
23
12
15
14
16
RSENSE1
RILED1
RSENSE2
RILED2
ISP1
ISP2
0.5V
0.48V
1.5V
1.5V
8355-1 BD
+–
+–
5mV
+–
+–
+
–



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