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STCS1APHR
P1-P3
P4-P6
P7-P9
P10-P12
P13-P15
P16-P18
P19-P19
STCS1A
Timing
7/19
5 Timing
Figure 3.
PWM and ou
tput curr
ent timin
g
PWM
10%
90%
T
D
Trise
T
D
Tfall
Current
PWM
10%
90%
T
D
Trise
T
D
Tfall
Current
Figure 4.
Block dia
gram
High Voltag
e
45 V
Preregulato
r
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 Voltag
e 3.3 V
H.V.
45 V
100 mV
Comp
Logic
V
CC
EN
PWM
GND
Slope
Control
SLOPE
High Voltag
e
45 V
Preregulato
r
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 Voltag
e 3.3 V
H.V.
45 V
100 mV
100 mV
Comp
Logic
V
CC
EN
PWM
PWM
GND
GND
Slope
Control
SLOPE
Typical perfor
mance charact
eristics
STCS1A
8/19
6
T
ypical perf
ormance c
haracteristics
Figure 5.
I
DRAIN
vs V
CC
, T
A
= 25°C
Figure 6.
I
DRAIN
vs R
SET
Figure 7.
I
DRAIN
vs T
emperature
Figure 8.
V
DROP
(including V
FB
)
vs
temperature
Figure 9.
I
CC
vs T
emperature
Figure 10.
I
CC
vs V
CC
STCS1A
Typical performance charac
teristics
9/19
Figure 11.
T
rise
/T
fall
vs C
SLOPE
Figure 12.
T
urn-on time
C
SLOPE
= floating
Figure 13.
Dimming operation: Rise
Fi
gure 14.
Dimming operation: F
all
C
SLOPE
= 1nF
C
SLOPE
= 1nF
P1-P3
P4-P6
P7-P9
P10-P12
P13-P15
P16-P18
P19-P19
STCS1APHR
Mfr. #:
Buy STCS1APHR
Manufacturer:
STMicroelectronics
Description:
LED Lighting Drivers 1.5 A Max Const LED Driver
Lifecycle:
New from this manufacturer.
Delivery:
DHL
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Ups
TNT
EMS
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