pcf2119x-2 NXP Semiconductors, pcf2119x-2 Datasheet - Page 42

• Manufacturer Part Number: pcf2119x-2
• Description: Controllers/drivers
• Manufacturer: NXP Semiconductors

Philips Semiconductors
28. August 2000
LCD controllers/drivers
16.2
In Fig. 32 - 34 typical graphs of the total power consumption of the PCF2119-2 using the internal charge pump are
given. They are obtained under the following conditions :
For each multiplication factor there is a separate line. A 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 consumptions. This affects the efficiency and the
optimal multiplication factor to be used to generate a certain output voltage.
Charge pump characteristic
ambient temperature 25C
V
normal mode
Fosc = internal oscillator
MUX 1:18
typical load current I
DD1
= V
DD2
2 x
3 x
4 x
= V
2.75
DD3
Fig.32 Typical charge pump characteristic for V
VLCD
= 2.2 (min), 2.7 (typ), 4V (max)
= 10 uA
3.5
4.25
42
Vop [V]
5
DD
= 2.2 V.
5.75
6.5
PCF2119x-2
Product specification