HD66710 Datasheet, PDF (44/73 Pages) Hitachi Semiconductor – (Dot Matrix Liquid Crystal Display Controller/Driver)

HD66710
Power Supply for Liquid Crystal Display Drive
1) When an external power supply is used
2) When an internal booster is used
V_CC
V_CC
R
V1
R
V2
R0
V3
R
V4
R
V5
VR
V_EE
(Boosting twice)
V_CC
(Boosting three times)
V_CC
NTC-type
thermistor
GND _{1 µF+}
Vci
V_CC
V1
GND
V2
C1
C2
V3
V5OUT2 ^V4
V5OUT3 ^V5
R ^NTC-type
R thermistor
Vci
V_CC
R
V1
GND
R
V2
R0
R
GND _{1 µF+}
C1
C2
R0
V3
R
R
V5OUT2 ^V4
R
1 µF ₊
V5OUT3 ^V5
1 µF ₊
GND
1 µF ₊
GND
Notes: 1. Boosting output voltage should not exceed the power supply voltage (2) (13V max.)
in the absolute maximum ratings. Especially, voltage of over 4.3V should not be input
to the reference voltage (Vci) when boosting three times.
2. Vci input terminal is used for reference voltage and power supply for the internal booster.
Input current into the Vci pin needs three times or more of load current through the
bleeder resistor for LCD. So, when it adjusts LCD driving voltage (Vlcd), input voltage
should be controlled with transistor to supply LCD load current.
3. Please notice connection (+/–) when it uses capacitors with poler.
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