Rainbow Electronics MAX1779 - Manual (Page 16)

MAX1779
Low-Power Triple-Output TFT LCD DC-DC
Converter
16 ______________________________________________________________________________________
V
IN
= +3.3V
C
IN
10
µ
F
R
RDY
100k
C11
0.1
µ
F
IN SHDN RDY
C
INTG
2200pF
C5
0.1
µ
F
DRVN
C9
0.22
µ
F
C6
0.47
µ
F
R5
320k
V
NEG
-8V, 5mA
C10
2.2
µ
F
R6
49.9k
C
REF
0.22
µ
F
PGND REF FBN
GND
TGND
FBP
DRVP SUPP SUPN
FB LX
R1
150k
R
COMP 24k
C
COMP 470pF
R2 50k
V
MAIN
= +5.0V
C
OUT
22
µ
F
C3
0.1
µ
F
C3 0.47
µ
F
VPOS +12V, 5mA C8 2.2
µ
F
C8
430k
R4 49.9k
C7
0.22
µ
F
MAX1779
INTG
33
µ
H
Figure 5. Typical Operating Circuit (L = 33µH)