L9610C - L9611C
APPLICATION CIRCUIT
Figure 4.
Note : All node voltages are referred to ground pin (GND)
The currents flowing in the arrow direction are assumed positive
without CBS : CP = 1nF
without CBS : CBS must be at least 10 times higher than the gate capacitance : CP = 100 pF.
CONTROLLING A 120W HALOGEN LAMP WITH
THE L9610C/11C DIMMER
The L9610C/11C Lamp Dimmer is used to control
the brightness of vehicle headlamps using H4 type
lamps (see fig. 5). With switch S1 open the full sup-
ply voltage is applied to the lamps : closing the
switch it is a possible to reduce the average lamp
voltage as desired :
VL = VS
R3
R2 + R3
If pin 5 is connected to ground the average lamp
voltage is constant, even for supply voltages in ex-
cess of 13 V.
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