PCF2119AU/2DA/2 NXP [NXP Semiconductors], PCF2119AU/2DA/2 Datasheet - Page 54

• Manufacturer Part Number: PCF2119AU/2DA/2
• Description: LCD controllers/drivers
• Manufacturer: NXP [NXP Semiconductors]

NXP Semiconductors
PCF2119X_5
Product data sheet
16.6 Charge pump characteristics
Typical graphs of the total power consumption of the PCF2119x using the internal charge
pump are illustrated in
The graphs were obtained under the following conditions:
For each multiplication factor there is a separate line. The line ends where it is not
possible to get a higher voltage under its conditions (a higher multiplication factor is
needed to get higher voltages).
Connecting different displays may result in different current consumption. This affects the
efficiency and the optimum multiplication factor to be used to generate a certain output
voltage.
Fig 41. Typical charge pump characteristics (a), V
•
•
•
•
•
•
T
V
Normal mode
f
multiplex drive mode 1:18
Typical current load for I
osc
amb
DD1
(1) 2
(2) 3
(3) 4
( A)
I
DD
= internal oscillator
400
300
200
100
= 25 C
= V
0
1.25
multiplication factor.
multiplication factor.
multiplication factor.
DD2
= V
DD3
Rev. 05 — 13 August 2009
Figure
= 2.2 V (minimum), 2.7 V (typical) and 4.0 V (maximum)
2.75
LCD
41,
= 10 A.
Figure 42
(1)
4.25
and
Figure
DD
= 2.2 V
43.
5.75
(2)
LCD controllers/drivers
V
(3)
LCD
PCF2119x
(V)
© NXP B.V. 2009. All rights reserved.
mgw573
7.25
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