The EL7640, EL7641, and EL7642 integrate a high performance boost regulator with 2 LDO controllers for V_ON and V_OFF, a V_ON-slice circuit with adjustable delay and either one (EL7640), three (EL7641), or five amplifiers (EL7642) for V_COM and V_GAMMA 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.

Using external low-cost transistors, the LDO controllers provide tight regulation for V_ON, V_OFF, as well as providing start-up sequence control and fault protection. The amplifiers are ideal for V_COM and V_GAMMA applications, with 150mA peak output current drive, 12MHz bandwidth, and 12V/ìs slew rate. All inputs and outputs are rail-to-rail.

Available in the 32 Ld thin QFN (5mm x 5mm) Pb-free packages, the EL7640, EL7641, and EL7642 are specified for operation over the -40°C to +85°C temperature range.

• Current mode boost regulator
  • Fast transient response
  • 1% accurate output voltage
  • 18V/3A integrated FET
  • >90% efficiency
• 2.6V to 5.5V V_IN supply
• 2 LDO controllers for V_ON and V_OFF
  • 2% output regulation
  • V_ON-slice circuit
• High speed amplifiers
  • 150mA short-circuit output current
  • 12V/ìs slew rate
  • 12MHz -3dB bandwidth
  • Rail-to-rail inputs and outputs
• Built-in power sequencing
• Internal soft-start
• Multiple overload protection
• Thermal shutdown
• 32 Ld 5x5 thin QFN package
• Pb-Free plus anneal available (RoHS compliant)

• TFT-LCD panels
• LCD monitors
• Notebooks
• LCD-TVs