Features: •TFT-LCD display supply-Boost regulator-VON charge pump-VOFF charge pump•2.7V to 14V VIN supply•5V < VBOOST < 17V•5V < VON < 40V•-40V < VOFF < 0V•VBOOST = 12V @ 470mA•VBOOST = 15V @ 370mA•High frequency, small inductor DC/...
EL7583: Features: •TFT-LCD display supply-Boost regulator-VON charge pump-VOFF charge pump•2.7V to 14V VIN supply•5V < VBOOST < 17V•5V < VON < 40V•-40V < VOFF &l...
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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 rovides 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.
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 20-pin TSSOP package and is specified for operation over the full -40°C to +85°C temperature range.