128-Tap, Nonvolatile, Linear-Taper Digital
Potentiometer in 2mm x 2mm µDFN Package
TIMING-CONTROL-IC
OUTPUT SIGNAL
10kΩ
+3.3V
27kΩ
15kΩ
+5V
0.1μF
MAX4238
+3.3V
120kΩ
H
W
MAX5128
22kΩ
L
51kΩ
VCOM
36kΩ
0.1μF
Figure 5. VCOM Generator Circuit for LCD Panels
VIN = 0.8V
TO VOUT
LX
OUT
MAX1722
FB
BATT
GND
VOUT = 2V
TO 5.25V
H
W
MAX5128
L
Figure 6. DC-DC Converter Using a Grounded Potentiometer
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