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EL7640 Datasheet (EL7640 - EL7642) FT-LCD DC/DC

Manufacturer: Intersil (now Renesas)

Overview

® EL7640, EL7641, EL7642 Data Sheet September 26, 2005 FN7415.1 TFT-LCD DC/DC with Integrated Amplifiers The EL7640, EL7641, and EL7642 integrate a high performance boost regulator with 2 LDO controllers for VON and VOFF, a VON-slice circuit with adjustable delay and either one (EL7640), three (EL7641), or five amplifiers (EL7642) for VCOM and VGAMMA applications.

The boost converter in the EL7640, EL7641, and EL7642 is a current mode PWM type integrating an 18V N-channel MOSFET.

Operating at 1.2MHz, this boost can operate in either P-mode for superior transient response, or in PI-mode for tighter output regulation.

Key Features

  • Current mode boost regulator - Fast transient response - 1% accurate output voltage - 18V/3A integrated FET - >90% efficiency.
  • 2.6V to 5.5V VIN supply.
  • 2 LDO controllers for VON and VOFF - 2% output regulation - VON-slice circuit.
  • High speed amplifiers - 150mA short-circuit output current - 12V/µs slew rate - 12MHz -3dB bandwidth - Rail-to-rail inputs and outputs.
  • Built-in power sequencing.
  • Internal soft-start.
  • Multiple overload pro.