Datasheet

ILD4035
350 mA Step Down LED Driver
Electrical Characteristics
Data Sheet 15 Revision 2.0, 2011-08-17
5.2 Switching Characteristics
All parameters at T
A
= 25 °C, unless otherwise specified.
V
S
= 12 V, 3 LEDs, R
sense
= 303 mΩ (I
LED
= 375 mA), L = 100 μH, V
EN
= 3 V, V
fLED
= 3 V
5.3 Digital Signals
All parameters at T
A
= 25 °C, unless otherwise specified.
Table 5 Switching Characteristics
Parameter Symbol Values Unit Note / Test Condition
Min. Typ. Max.
Switching frequency
f
Switch
–120–kHz
Maximum switching frequency
f
Switch max
– – 500 kHz for any coil value
Mean current sense threshold voltage
V
sense
–114–mV
Sense threshold hysteresis
V
sensehys
– ±7.5 – %
Residual voltage at collector of power
transistor
V
switch on
– 1.1 – V output switch turned on
Output current accuracy
I
outacc
– ±3– %
Table 6 Digital Control Parameter at Pin EN/PWM
Parameter Symbol Values Unit Note / Test Condition
Min. Typ. Max.
Input voltage for power on
V
On
2.5 3 40 V full LED current
Input voltage for power off
V
Off
-0.3 – 0.4 V
Min. power on puls duration
t
On
10 – µs