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ISL78228 - Dual 800mA Low Quiescent Current 2.25MHz High Efficiency Synchronous Buck Regulator

Description

FB1 The feedback network of the Channel 1 regulator.

FB1 is the negative input to the transconductance error amplifier.

voltage is set by an external resistor divider connected to FB1.

Features

  • include internal digital soft-start, enable for power sequence, overcurrent protection, and thermal shutdown. The ISL78228 is offered in a 3mmx3mm 10 Ld DFN package with 1mm maximum height. The complete converter occupies less than 1.8cm2 area. The ISL78228 is AEC-Q100 qualified and is rated for the automotive temperature range (-40°C to +105°C). Features.
  • Internal current mode compensation.
  • 100% maximum duty cycle for lowest dropout.
  • Selectable forced PWM mode and PF.

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Datasheet preview – ISL78228

Datasheet Details

Part number ISL78228
Manufacturer Renesas Electronics
File Size 1.82 MB
Description Dual 800mA Low Quiescent Current 2.25MHz High Efficiency Synchronous Buck Regulator
Datasheet download datasheet ISL78228 Datasheet
Additional preview pages of the ISL78228 datasheet.

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Full PDF Text Transcription

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DATASHEET ISL78228 Dual 800mA Low Quiescent Current 2.25MHz High Efficiency Synchronous Buck Regulator FN7849 Rev 4.00 February 26, 2016 The ISL78228 is a high efficiency, dual synchronous step-down DC/DC regulator that can deliver up to 800mA continuous output current per channel. The supply voltage range of 2.75V to 5.5V allows for the use of a 3.3V or 5V input. The current mode control architecture enables very low duty cycle operation at high frequency with fast transient response and excellent loop stability. The ISL78228 operates above the AM radio band as well as the 2.25MHz switching frequency, allowing for the use of small, low cost inductors and capacitors. Each channel is optimized for generating an output voltage as low as 0.6V.
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