DATASHEET
EL7583 FN7335
Rev 5.00
May 12, 2006 3-Channel DC/DC Converter 3-Channel DC/DC Converter Features The EL7583 is a 3-channel DC/DC converter IC which is
designed primarily for use in TFT-LCD applications. It
features a PWM boost converter with 2.7V to 14V input
capability and 5V to 17V output, which powers the column
drivers and provides up to 470mA @ 12V, 370mA @ 15V
from 5V supply. A pair of charge pump control circuits
provide regulated outputs of VON and VOFF supplies at 8V
to 40V and -5V to -40V, respectively, each at up to 60mA. TFT-LCD display supply
-Boost regulator
-VON charge pump
-VOFF charge pump The EL7583 features adjustable switching frequency,
adjustable soft start, and a separate output VON enable
control to allow selection of supply start-up sequence. An
over-temperature feature is provided to allow the IC to be
automatically protected from excessive power dissipation.
The EL7583 is available in a standard 20 Ld TSSOP
package and the Pb-free 20 Ld HTSSOP package. Both are
specified for operation over the full -40В°C to +85В°C
temperature range. Ordering Information
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