PCF8531 datasheet(37/51 Pages) NXP

37 / 51 page

PCF8531

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Product data sheet

Rev. 05 — 10 August 2010

37 of 51

NXP Semiconductors

PCF8531

34 x 128 pixel matrix driver

VDD1 =2V; 4 × voltage multiplier; Tamb =27 °C; TC = 0;

BS = 100; no VLCD load.

VDD1 = 1.8 V; VDD2 and VDD3 = 2.6 V; Tamb =27 °C;

fosc =34kHz; no VLCD load.

Fig 23. Supply current as a function of supply

voltage 2 and supply voltage 3

Fig 24. Supply current as a function of LCD supply

voltage; different multiplication factors

400

200

100

300

mgs477

IDD

(

μA)

VDD2 and VDD3 (V)

4 V

VLCD = 9 V

7.5 V

246

400

200

100

300

mgs478

IDD

(

μA)

VLCD (V)

VLCD = 7.5 V; VDD1 to VDD3 = 2.7 V; Tamb =27 °C;

no VLCD load.

VDD1 = 1.8 V; VDD2 and VDD3 = 2.5 V; external VLCD;

Tamb =27 °C; TC = 0; BS = 100; no VLCD load.

Fig 25. LCD supply voltage as a function of

temperature

Fig 26. Supply current as a function of LCD supply

voltage

−50

100

mgs479

TC0

TC1

TC6

VLCD

(V)

T (

°C)

TC7

246

mgs480

(

μA)

VLCD (V)

IDD

IDD(LCD)

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