PCA8538UG(2014) View Datasheet(PDF) - NXP Semiconductors.

Part Name

Description

MFG CO.

PCA8538UG
(Rev.:2014)

Automotive 102 x 9 Chip-On-Glass LCD segment driver

NXP Semiconductors. 

NXP Semiconductors

PCA8538

Automotive 102 x 9 Chip-On-Glass LCD segment driver



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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), VLCD 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

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.

PCA8538

Product data sheet

All information provided in this document is subject to legal disclaimers.

Rev. 4 — 26 September 2014

© NXP Semiconductors N.V. 2014. All rights reserved.

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