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STCS1A Datasheet(PDF) 7 Page - STMicroelectronics

Part # STCS1A
Description  1.5 A max constant current LED driver
PDF  19 Pages
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Manufacturer  STMICROELECTRONICS [STMicroelectronics]
Direct Link  http://www.st.com
Logo STMICROELECTRONICS - STMicroelectronics

STCS1A Datasheet(HTML) 7 Page - STMicroelectronics

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STCS1A
Timing
7/19
5
Timing
Figure 3.
PWM and output current timing
PWM
10%
90%
T
D
Trise
T
D
Tfall
Current
PWM
10%
90%
T
D
Trise
T
D
Tfall
Current
Figure 4.
Block diagram
High Voltage
45 V
Preregulator
3.3 V
Enable
Input
PWM
Input
Bandgap
1.23 V
+
-
+
-
Driver
Disc
comp
DISC
DRAIN
FB
75 mV
Enable,
PWM &
Slope controll
Logic
Shutdown
all blocks
Thermal
Shutdown
Low Voltage 3.3 V
H.V.
45 V
100 mV
Comp
Logic
V
CC
EN
PWM
GND
Slope
Control
SLOPE
High Voltage
45 V
Preregulator
3.3 V
Enable
Input
PWM
Input
Bandgap
1.23 V
Bandgap
1.23 V
+
-
+
-
+
-
+
-
Driver
Disc
comp
DISC
DRAIN
FB
75 mV
Enable,
PWM &
Slope controll
Logic
Shutdown
all blocks
Thermal
Shutdown
Thermal
Shutdown
Low Voltage 3.3 V
H.V.
45 V
100 mV
100 mV
Comp
Logic
V
CC
EN
PWM
PWM
GND
GND
Slope
Control
SLOPE



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