EL7584

EL7584 Manufacturer

EL7584 Description

EL7584 Description

EL7584 Categories

EL7584 Datasheet (PDF)

EL7584 Price & Availability

EL7584 Features

EL7584 Features

• TFT-LCD display supply
  • Boost regulator
  • V_COMbuffer
  • V_ONcharge pump
  • V_OFFcharge pump
• 2V to 14V V_INsupply
• 5V BOOST
• 2V COM
• 5V ON
• -40V OFF
• V_BOOST= 15V @ 370mA
• High frequency, small inductor DC-DC boost circuit
• Over 90% efficient DC-DC boost converter capability
• Built-in power-up sequence with adjustable V_ONdelay
• Adjustable frequency
• Adjustable soft-start
• Adjustable outputs
• Over-temperature protection
• Small parts count

EL7584 Description

The EL7584 is a 4-channel DC/DC converter IC which is designed primarily for use in TFT-LCD applications. The boost converter has 2V to 14V input capability and provides 5V to 17V output, which powers the column drivers and provides up to 370mA at 15V. A pair of charge pump control circuits provide outputs to allow the external generation of V_ON and V_OFF supplies at 5V to 40V and 0V to -40V, respectively, each at up to 60mA for V_BOOST = 15V. The V_COM buffer provides up to 50mA continuous output current from 2V to 13V.

The EL7584 features adjustable switching frequency and on-chip power sequence to simplify start-up operation. A separate input is available to externally increase the default delay of the positive charge pump. An over-temperature feature is provided to allow the IC to be automatically protected from excessive power dissipation.

The EL7584 is available in a 24-pin TSSOP package and is specified for operation over the full -40°C to +85°C temperature range.

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