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

Datasheet Summary

Description

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

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.

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Datasheet preview – EL7640

Datasheet Details

Part number EL7640
Manufacturer Intersil Corporation
File Size 517.16 KB
Description (EL7640 - EL7642) FT-LCD DC/DC
Datasheet download datasheet EL7640 Datasheet
Additional preview pages of the EL7640 datasheet.

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Full PDF Text Transcription

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® 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. Using external low-cost transistors, the LDO controllers provide tight regulation for VON, VOFF, as well as providing start-up sequence control and fault protection.
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