Datasheet

4/1/2010 - 3 -
48
2
6
1
5
3
1.0 uF
25V
Vcc
(source)
Vcc
1 kHz
PWM Out
Vcc In
MMBT2222A
10K
MMSD4148
20K
Bi - Level
Switch
Vref In
(2.5V)
+
_
+
_
+
_
+
_
Analog
Dim Out
Vcc
Vcc
0.1
LM324DG
20K
MMSD
4148
0.1
0.1
0.1
10nF
68nF
10nF
5K
15K
4.3K
1nF
10K
30K
10K
10
100K
10V
Dim
Adj
P2
Bi-level
or PWM
1 - 10V
Analog
Temp
Compensation
TBD
Dimming Option Control
Card Schematic (Rev 3)
Common
1
2
3
5
6
11K
External
100K Pot
1K
Analog
Dimming
MC1455D
Dim
Select
Con1 (to P1)
P1
JMP1
R1
R2
R3
R4
U1
U2D
D1
D2
D3
Q1
R5
R6
R7
R8
R9
R10
R11
R12
R13
R14
TH1
R15
C1
C2
C3
C4
C5
C6
C7
C8
C9
150K
R16
10K
Q2
2N7002KT1G
Notes:
1. Pots R1 and R9 are Vishay/Spectrol 43P
type 20 turn cermet trimmers (Mouser
part # 594-43P203 and 594-43P104)
2. All caps are SMD ceramic, 25V min.
3. TH1 is PTC thermistor - LS = 5mm
4. All semiconductors are ON Semi parts
U2A
U2B
U2C
TP1
TP2
TP3
TP4
JMP2
JMP3