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componentes Descripción
Lista de partido
MAX1748
Triple-Output TFT-LCD DC-DC Converters
Maxim Integrated
MAX1748 Datasheet PDF : 16 Pages
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Triple-Output TFT-LCD
DC-DC Converters
SUPN
V
SUPN
= 2.7V TO 13V
OSC
D4
C5
DRVN
D5
+
-
MAX1748
MAX8726
GND
FBN
-
V
REF
+
1.25V
REF
PGND
Figure 2. Negative Charge-Pump Block Diagram
R5
R6
V
NEG
C6
C
REF
0.22
μ
F
V
POS
= (R5 / R6) x V
REF
V
REF
= 1.25V
SUPP
V
SUPP
= 2.7V TO 13V
OSC
D2
C3
DRVP
D3
-
FBP
+
+
V
REF
-
1.25V
MAX1748
MAX8726
GND
PGND
Figure 3. Positive Charge-Pump Block Diagram
R3
R4
V
POS
C4
V
POS
= [1 + (R3 / R4)] x V
REF
V
REF
= 1.25V
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