PCF2119AU NXP [NXP Semiconductors], PCF2119AU Datasheet - Page 57

• Manufacturer Part Number: PCF2119AU
• Description: LCD controllers/drivers Single-chip LCD controller and driver
• Manufacturer: NXP [NXP Semiconductors]

NXP Semiconductors
PCF2119X
Product data sheet
16.6 Charge pump characteristics
Table 37.
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.
Original mode
character mode
display on
V
any mode
Fig 42. Typical charge pump characteristics (a), V
•
•
•
•
•
•
LCD
T
V
Normal mode
f
multiplex drive mode 1:18
Typical current load for I
osc
generator operating
amb
DD1
(1) 2 × multiplication factor.
(2) 3 × multiplication factor.
(3) 4 × multiplication factor.
(μA)
I
DD
= internal oscillator
400
300
200
100
= 25 °C
= V
0
1.25
Reducing current consumption
DD2
All information provided in this document is subject to legal disclaimers.
= V
DD3
Rev. 7 — 15 November 2010
Figure
= 2.2 V (minimum), 2.7 V (typical) and 4.0 V (maximum)
2.75
LCD
42,
= 10 μA.
Figure 43
(1)
4.25
and
Alternative mode
icon mode (control bit IM)
display off (control bit D)
direct mode
power-down mode (pin PD)
Figure
DD
= 2.2 V
44.
5.75
(2)
LCD controllers/drivers
V
(3)
LCD
PCF2119x
(V)
© NXP B.V. 2010. All rights reserved.
mgw573
7.25
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