EL7640 Datasheet (Intersil Corporation) - (EL7640

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

Input Supply Range Undervoltage Lockout Threshold Undervoltage Lockout Threshold Quiescent Current Quiescent Current - Switching Fault Delay Time Reference Voltage VIN rising VIN falling LX not switching LX switching CDEL = 220nF TA = 25°C 2.6 2.4 2.2 2.5 2.3 5.5 2.6 2.4 2.5 5 52 10 V V V mA mA

® 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

EL7640 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 sh