LK043T1DG02 View Datasheet(PDF) - Sharp Electronics

Part Name

Description

Manufacturer

LK043T1DG02

TFT-LCD Module

Sharp Electronics 

LCY-W-06901 Page 8 of 21

【Note 5】

An example of rush current measurement

◎Measurement conditions

・Power supply voltage VCC ： 3.3V AVDD ： 5.0V

VCC

LCD Module Side

Icc

Measurement part

0.1uF

・Disp signal

・Other input signals

： OFF ⇒ ON

： GND

AVDD

IAVDD

・Measurement system ： refer to right Fig.

4.7uF

・rush current measurement timing ： refer to following Fig.

2.2uF

VCC

AVDD

2.3V

Measurement 1

0.3V

Measurement 2

4.8V

Rising Time

0.01ms

0.3V

Measurement 3

Rising Time

Vsync

0.5ms

①

②

DISP

◎Measurement Example

Measurement 1

Y：20mA/Div., 2V/Div., X：0.003ms/Div.

VCC

Rising Time

Icc

0.01ms

Peak Current

about 100mA

ICC

Measurement 2

Measurement 3

Y：20mA/Div., 2V/Div., X：0.08ms/Div. Y：50mA/Div., 5V/Div., X：4ms/Div.

IAVDD

AVDD

IAVDD

Rising Time

0.5ms

Peak Current

about 80mA

Vsync

Disp

①

②

IAVDD

Peak Current

about 100mA

These rush current won’t flow stationary,

these will flow at the timing shown in Measurement 3.

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