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ISL97702 - Boost

Description

CONDITION MIN TYP MAX SUPPLY VDD Supply Operating Voltage Range 2.3 5.5 IDIS Supply Current when Disabled LOGIC INPUTS NEN, NSYNC, SEL NEN = VDD 0.1 3 Rup Pull-up Resistor Enabled, Input at GND 150 250 350 IIL Leakage Current when Dis

Features

  • Up to 87% efficiency.
  • 2.3V to 5.5V input.
  • Up to 28V output.
  • 50mA at 18V.
  • Integrated boost Schottky diode.
  • Input voltage disconnect switch.
  • Dual output voltage selectable.
  • Synchronization input.
  • Chip enable.
  • 10 Ld 3x3 DFN package.
  • Pb-free plus anneal available (RoHS compliant).

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Full PDF Text Transcription

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ISL97702 NROETCROEMCMOEMNMDEENDDREEDPFLOARCENMEWENDTEPSAIGRNTS ISL97519A Boost with Dual Reference Outputs DATASHEET FN7462 Rev 0.00 October 13, 2005 The ISL97702 represents a high efficiency, boost converter with integrated boost FET, boost diode and input disconnect FET. A dual feedback circuit allows simple switching between two pre-defined output voltages using a single logic input. With an input voltage of 2.3V to 5.5V the ISL97702 has an output capability of up to 50mA at 18V using integrated 500mA switches. Efficiencies are up to 87%. The integrated protection FET is used to disconnect the boost inductor from the input supply whenever an output fault condition is detected, or when the device is disabled.
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