參數(shù)資料
型號: PCF2119X
廠商: NXP Semiconductors N.V.
英文描述: LCD controllers/drivers
中文描述: LCD控制器/驅(qū)動器
文件頁數(shù): 45/68頁
文件大小: 346K
代理商: PCF2119X
2003 Jan 30
45
Philips Semiconductors
Product specification
LCD controllers/drivers
PCF2119X
16.2
Charge pump characteristics
Typical graphs of the total power consumption of the
PCF2119x using the internal charge pump are illustrated
in Figs.34 to 36.
The graphs were obtained under the following conditions:
T
amb
= 25
°
C
V
DD1
= V
DD2
= V
DD3
= 2.2 V (min.), 2.7 V (typ.) and 4 V
(max.)
Normal mode
f
osc
= internal oscillator
Mux 1 : 18
Typical current load for I
LCD
= 10
μ
A.
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.
handbook, full pagewidth
0
0
50
100
150
200
250
300
350
2.75
3.5
4.25
5
5.75
6.5
7.25
Vop (V)
(
μ
A)
(1)
(2)
(3)
MGW573
Fig.34 Typical charge pump characteristics for V
DD
= 2.2 V.
(1) 2
×
multiplication factor.
(2) 3
×
multiplication factor.
(3) 4
×
multiplication factor.
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