S6510
Internal Block Diagram
-
2.5V Ref
40uA Ref
Under Voltage Lock Out
ErrorAmplifier
+ Feedback
0.4V
OVP
1
2
-
+
8
7
INV
COMP
MULT
CS
Vcc
uvlo
-
18V
+
-
+
Vref
Vth(st)
A
Static
OVP
-
2.3V
OUT
GND
IDET
+
Dynamic
0. 5V
Vref
+
-
Self Starter
OVP
Vm2
40uA
10uA
S
Drive Output
GainK
Vmo
Vm1-(Vm2-Vref)
uvlo
K=
Vm1
3
4
6
5
2V
Vs
Multiplier
Q
Vmo
R
+
2Vbe
40k
+
-
-
5pF
Vz
CurrentSense
Comparator
ZeroCurrent
Detector
2.0V
1.5V
PIN Collection
Pin Number
1
Pin Name
Cs
Pin Function Description
Soft start time capacitor connection pin. The pin charge time to Vref determines
The preheating time of lamp.
Timing capacitor connection pin. The timing capacitor is charged and discharged
To generate the sawtooth waveform that determines the oscillator frequency in
the internal oscillator.
2
3
CT
Rs
Soft start resistor connection pin. The soft start resistor value determines the
initial soft start frequency for preheating.
Input to the protection circuit. If the pin voltage is lower than Vref, the output oh
The output driver1,2 is inhibited.
Ground of the control Section.
4
5
Ldet
GND
Gate drive output. A push pull output stage is able to drive the Power MOSFET
With peak current of 400mA.
6
OUT2
Gate drive output. A push pull output stage is able to drive the Power MOSFET
With peak current of 400mA.
7
8
OUT1
Vcc
Supply Voltage of output driver and control circuits.
KSI-8012-001
2
AUK [ AUK CORP ]
