M5480 datasheet(5/6 Pages) STMICROELECTRONICS

Nome de Peças	M5480

Descrição Electrónicos	LED DISPLAY DRIVER

PDF	6 Pages

Scroll/Zoom	100%

Fabricante Electrônico	STMICROELECTRONICS [STMicroelectronics]

Página de início	http://www.st.com

Logo

5 / 6 page

+V C

+VC

VOUT +VD

The worst case condition for the device is when

roughly half of the maximum number of segments

are activated.

It must be checked that the total power dissipation

does not exceed the absolute maximum ratings of

the device.

In critical cases more resistors can be used in

conjunction with groups of segments.

In this case the current variation in the single

resistor is reduced and Ptot limited.

In this configuration the drop on the serial con-

nected diodes is quite stable if the diodes are

properly chosen.

The total power dissipation of the IC depends, in a

first approximation, only on the number of seg-

ments activated.

In this configuration VOUT + VDis constant. The total

power dissipation of the IC depends only on the

number of segments activated.

M5480

5/6

M5480 Folha de dados(PDF) 5 Page - STMicroelectronics