PCA8538UG(2014) 查看數據表（PDF） - NXP Semiconductors.

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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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(1) V[8:0] must be set so that VLCD > VDD2.

(2) Automatic limitation for VLCD > 12 V.

Fig 15. VLCD programming of PCA8538 (assuming VT[8:0] = 0h)

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Remarks:

1. It is important that V[8:0] is set to such a value that the resultant VLCD, including the

temperature compensation VT[8:0], is higher than VDD2.

2. Programmable range of V[8:0] is from 0h to 1FFh. This would allow achieving a VLCD

above 12 V but 12 V is the built-in automatic limit.

8.10.3.2 VLCD driving capability

Figure 16 illustrates the main factor determining how much current the charge pump can

deliver.

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Fig 16. Charge pump model (used to characterize the driving strength)

The output resistance of the charge pump is specified in Table 32.

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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