L9610C STMicroelectronics, L9610C Datasheet - Page 12

• Manufacturer Part Number: L9610C
• Description: Switching Converters, Regulators & Controllers Power MOS Controller
• Manufacturer: STMicroelectronics

Specifications of L9610C

• Mounting Style: SMD/SMT
• Package / Case: SO-16
• Lead Free Status / Rohs Status: Lead free / RoHS Compliant

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Figure 7.
The sensing resistor R
In normal conditions (V
resistor must be 50 mV. The current limiter intervenes attwice the nominal current, I
The timing capacitor C
twice the duration of the current limitation at power-on.
The optimal value of the oscillator frequency, taking tolerances into account, must be slightly
higher than the frequency at which lamp flicker is noticable (min 60 Hz).
The switching times are a compromise between possible EMI and switching power losses.
The recommended value for C
Application circuit with controlling a 120 W halogen lamp
S
t
CC
(V
and timing capacitor C
ct
= 14 V, maximum brightness) the voltage drop across the sense
= 3.5 V) must be chosen so that the delay before intervention is
s
R
is 47 pF.
C
S
t
=
=
------------------------------------------------------ -
2Inom @V
2
-------------------------------------------------
×
limitation time
(
t
V
K
should be dimensioned according to :
Si
T
S
=
14V
)
nom
L9610
.