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PCF8536AT Fiches technique(PDF) 38 Page - NXP Semiconductors

No de pièce PCF8536AT
Description  Automotive 102 x 4 Chip-On-Glass LCD segment driver
PDF  103 Pages
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Fabricant  NXP [NXP Semiconductors]
Site Internet  http://www.nxp.com
Logo NXP - NXP Semiconductors

PCF8536AT Fiches technique(HTML) 38 Page - NXP Semiconductors

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PCA8530
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© NXP Semiconductors N.V. 2014. All rights reserved.
Product data sheet
Rev. 2 — 25 September 2014
38 of 103
NXP Semiconductors
PCA8530
Automotive 102 x 4 Chip-On-Glass LCD segment driver
It has to be considered that the driving capability of the charge pump is depending on the
resistance of the Indium Tin Oxide (ITO) tracks, see Figure 20 and Figure 19.
Conditions: VDD2 = 5.0 V, RITO(VSS2), RITO(VDD2), RITO(VLCDOUT) =50 , Tamb =27 C.
Charge pump configuration:
(1) VLCD =2  VDD2.
(2) VLCD =3  VDD2.
(3) VLCD =4  VDD2.
(4) VLCD =5  VDD2.
Iload is the overall current sink by the segment and backplane outputs depending on the display,
plus the on-chip VLCD current consumption.
Reading example: VLCD can be programmed to 10 V by using the charge pump configuration (2)
or (3). With configuration (2), VLCD can be programmed to 10 V for a current load up to about
780
A. With configuration (3), V
LCD can be programmed to 10 V for a current load up to about
940
A.
Remark: The charge pump configuration (4) has no benefit compared to configuration (3) and is
therefore not recommended when VDD2 =5.0 V.
Fig 18. Charge pump driving capability with VDD2 =5.0 V



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