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STCS2ASPR

P1-P3P4-P6P7-P9P10-P12P13-P15P16-P18
STCS2A Timing
7/18
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
SOURCE
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
FB
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
SOURCE
75 mV
Enable,
PWM &
Slope controll
Logic
Shutdown
all blocks
Thermal
Shutdown
Thermal
Shutdown
Low Voltage 3.3 V
H.V.
45 V
100 mV100 mV
Comp
Logic
V
CC
EN
PWMPWM
GNDGND
Slope
Control
FB
SLOPE
Typical performance characteristics STCS2A
8/18
6 Typical performance characteristics
Figure 5. I
DRAIN
vs V
CC
, T
A
= 25°C Figure 6. I
DRAIN
vs R
SET
Figure 7. I
DRAIN
vs temperature Figure 8. V
DROP
(including V
FB
) vs
temperature
Figure 9. I
CC
vs temperature Figure 10. I
CC
vs V
CC
1
10
100
1000
0.1 1 10 100
I
DRAIN
[mA]
R
FB
[Ω]
1
10
100
1000
0.1 1 10 100
I
DRAIN
[mA]
R
FB
[Ω]
STCS2A Typical performance characteristics
9/18
Figure 11. T
rise
/T
fall
vs C
SLOPE
Figure 12. Turn-on time
Figure 13. Dimming operation: Rise Figure 14. Dimming operation: Fall
C
SLOPE
= 1 nF
C
SLOPE
= 1 nF
P1-P3P4-P6P7-P9P10-P12P13-P15P16-P18

STCS2ASPR

Mfr. #:
Buy STCS2ASPR
Manufacturer:
STMicroelectronics
Description:
LED Lighting Drivers 2 A Max Const LED Driver
Lifecycle:
New from this manufacturer.
Delivery:
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