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ISL6405

Intersil Corporation
Part Number ISL6405
Manufacturer Intersil Corporation
Description Dual Output LNB Supply and Control Voltage Regulator
Published Apr 7, 2005
Detailed Description ® Data Sheet July 2004 ISL6405 FN9026.2 Dual Output LNB Supply and Control Voltage Regulator with I2C Interface for A...
Datasheet PDF File ISL6405 PDF File

ISL6405
ISL6405

Overview
® Data Sheet July 2004 ISL6405 FN9026.
2 Dual Output LNB Supply and Control Voltage Regulator with I2C Interface for Advanced Satellite Set-Top Box Designs The ISL6405 is a highly integrated voltage regulator and interface IC, specifically designed for supplying power and control signals from advanced satellite set-top box (STB) modules to the low noise blocks (LNBs) of two antenna ports.
The device is comprised of two independent currentmode boost PWMs and two low-noise linear regulators along with the circuitry required for 22kHz tone generation, modulation and I2C device interface.
The device makes the total LNB supply design simple, efficient and compact with low external component count.
Two independent current-mode boost converters provide the linear regulators with input voltages that are set to the final output voltages, plus typically 1.
2V to insure minimum power dissipation across each linear regulator.
This maintains constant voltage drops across each linear pass element w...


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