Datasheet

Evaluates: MAX4990
MAX4990 Evaluation Kit
6 _______________________________________________________________________________________
MAX4990
ICM7556
U1
V
A
14
VA
GND
N.C.
13
V
B
12
VB
FEL
VBATT
N.C.
11
CS
10
N.C.
9
LX
8
D1
SLEW
NOTES:
f
SW
FREQUENCY RANGE = 30kHz TO 110kHz
f
EL
FREQUENCY RANGE = 0.1kHz TO 3.6kHz
LAMP FREQUENCY = f
EL
/4 = 25Hz TO 900Hz
1
EN
2
JU2
DIM
3
EL
4
SW
5
V
DD
6
GND
7
CS
VDD2
FSW
GND
GND
VDD
GND
VR3
500kΩ
R5
13.3kΩ
1%
U2
R2
374kΩ
1%
C6
3300pF
250V
R3
1MΩ
JU4
R1
100kΩ
R4
374kΩ
1%
C2
1000pF
25V
C1
1µF
25V
VR1
2MΩ
JU1
2
1
3
JU3
2
1
3
3
2
1
VDD2
VR2
2MΩ
3
2
1
FEL
FSW
JU5
JU6
VDD1
JU7
VBATT
JU8
C3
68pF
50V
FSW
VDD2
VBATT
C4
0.1µF
16V
C5
1µF
25V
C7
15000pF
50V
V+
14
DISCHARGE2
13
THRESHLD2
12
CTRLVOLT2
11
RESET2
10
VDD1
OUTPUT2
9
TRIGGER2
8
DISCHARGE1
1
THRESHLD1
2
CTRLVOLT1
3
RESET1
4
OUT1
5
TRIGGER1
6
GND
7
L1
220µH
FEL
C8
10µF
25V
CS
3
1
VDD
R7
324kΩ
1%
R6
40.2kΩ
1%
VC1
7pF TO 50pF
3
1
2
HIGH VOLTAGE (160V DC MAX)
HIGH VOLTAGE (160V DC MAX)
HIGH VOLTAGE (160V DC MAX)
HIGH VOLTAGE (160V DC MAX)
Figure 1. MAX4990 EV Kit Schematic