Datasheet

STLED25 Electrical characteristics
Doc ID 022323 Rev 3 9/30
Symbol Parameter Test conditions Min. Typ. Max. Unit
I
RIPPLE
LED peak-to-peak current
ripple
(1) (2)
V
IN
= 2.5 V; I
LED
= 20 mA at
all channels,
EN13
PWM
= EN45
PWM
500 µA
V
IN
= 2.5 V; I
LED
= 20 mA at
all channels,
EN13
PWM
= EN45
PWM
4000
PWM
LIN
PWM linearity
(1) (2)
1/255 PWM, 300 Hz, 20 mA
on all drivers, V
IN
= 2.5 V
(3)
10 %
25/255 PWM, 300 Hz, 20
mA on all drivers, V
IN
= 2.5 V
(3)
2%
I
LED_LEAK
LED driver leakage in OFF
state
V
OUT
= 7.5 V 0.5 µA
I
LED_MAX
LED driver max current 25 mA
Line_tr Line transient response
(1)
VIN
TR
=+/-350mV,10µs step 30 %
f
DIM
PWM dimming frequency 100 800 Hz
D
DIM
Duty cycle of PWM dimming 0.39 100 %
Logic inputs
R
EN
Internal pull-down resistor 100 kΩ
V
IL
EN low-level input voltage
V
IN
= 2.7 V to 4.5 V 0.68
V
V
IN
= 2.3 V to 5.5 V 0.55
V
IH
EN high-level input voltage
V
IN
= 2.7 V to 4.5 V 1.07
V
V
IN
= 2.3 V to 5.5 V 1.14
I
LK-I
EN input leakage current
V
EN
= V
IN
= 4.2 V, 100 k
internal pulldowns
42 µA
Power switches
R
DSON
P-channel on resistance 880
mΩ
N-channel on resistance 450
I
LKG-LX
LX leakage current V
IN
=V
LX
=4.8V; V
EN
=0 1 µA
1. Not tested in production
2. 10% value reduction at V
IN
= 2.3 V
3. The PWM linearity is measured on the mean value of the output current in PWM mode in the 100 ms window. The
frequency of the PWM is 300 Hz
Table 6. Electrical characteristics (continued)