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MAX1997 Datasheet(PDF) 13 Page - Maxim Integrated Products

Part # MAX1997
Description  Quintuple/Triple-Output TFT LCD Power Supplies with Fault Protection and VCOM Buffer
PDF  31 Pages
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Manufacturer  MAXIM [Maxim Integrated Products]
Direct Link  https://www.maximintegrated.com/en.html
Logo MAXIM - Maxim Integrated Products

MAX1997 Datasheet(HTML) 13 Page - Maxim Integrated Products

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Quintuple/Triple-Output TFT LCD Power Supplies
with Fault Protection and VCOM Buffer
______________________________________________________________________________________
13
Figure 1. Standard Application Circuit
VIN
2.7V TO 5.5V
L1
3.0
µH
P1
R2
51.1k
Ω
C2
10
µF
6.3V
R1
10
Ω
Q1
VLOGIC
2.5V
C7
1000pF
C8
100pF
C1
0.47
µF
R5
150k
Ω
R3
150k
Ω
R88
12.4k
Ω
R99
12.4k
Ω
R77
510
Ω
R4
43.2k
Ω
C12
1
µF
C13
10
µF
C18
0.1
µF
ANALOG GROUND
(GND)
POWER GROUND
(PGND)
GATE
OCN
LX
FB
OCP
IN
SHDN
FREQ
DRV1
FB1
20
23
25
27
26
29
32
D1
VMAIN
9V
LX
31
3
4
R15
6.8k
Ω
R18
6.8k
Ω
R11
118k
Ω
R12
20k
Ω
R10
2.2k
Ω
R7
7.68k
Ω
R9
1M
Ω
R8
1.21k
Ω
R6
100k
Ω
R16
150k
Ω
R17
24.3k
Ω
R21
39k
Ω
R20
20k
Ω
R14
20k
Ω
R13
20k
Ω
R19
301k
Ω
R22
39k
Ω
R23
39k
Ω
D5
DRVP
FBP
Q3
LX
22
21
D3
D4
DRV2
FB2
Q2
VG_OFF
-7V
VG_ON
20V
19
18
ONDC
30
PFLT
28
ON2
ONP
ONN
FBNB
OUTB
FBPB
VDDB
16
17
14
15
8
7
6
DRVA
11
N1
TGNDA
TGNDB
24
1
DRVN
FBN
LX
Q4
D2
9
10
C27
1000pF
VSOURCE
9V
CT
REF
GND
REF
D6
REF
5
12
13
VVCOM
PGND
2
VGAMMA
8.6V
C17
0.22
µF
C16
0.1
µF
C20
0.47
µF
C26
1
µF
C19
0.1
µF
C24
0.1
µF
C25
0.1
µF
C22
0.1
µF
C14
2.2
µF
C15
1
µF
C11
0.47
µF
C9
0.01
µF
C4
4.7
µF
10V
C5
4.7
µF
10V
C6
4.7
µF
10V
C23
0.1
µF
MAX1997
R24
150k
Ω
C28
1000pF



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