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ISL91127 - High Efficiency Buck-Boost Regulator

Description

Power input.

Range: 1.8V to 5.5V.

Connect 2x10μF capacitors to PGND.

Features

  • Accepts input voltages above or below regulated output voltage.
  • Automatic and seamless transitions between Buck and Boost modes.
  • Input voltage range: 1.8V to 5.5V.
  • Continuous output current: up to 2.1A (PVIN = 2.5V, VOUT = 3.3V).
  • High efficiency: up to 96%.
  • 30µA quiescent current maximizes light-load efficiency.
  • 2.5MHz switching frequency minimizes external component size.
  • Fully protected for short-circuit, over-temperature.

📥 Download Datasheet

Datasheet preview – ISL91127

Datasheet Details

Part number ISL91127
Manufacturer Renesas
File Size 1.50 MB
Description High Efficiency Buck-Boost Regulator
Datasheet download datasheet ISL91127 Datasheet
Additional preview pages of the ISL91127 datasheet.

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Full PDF Text Transcription

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DATASHEET ISL91127 High Efficiency Buck-Boost Regulator with 4.5A Switches FN8418 Rev 5.01 Aug 26, 2022 The ISL91127 is a high-current, buck-boost switching regulator for systems using new battery chemistries. It uses the Renesas proprietary buck-boost algorithm to maintain voltage regulation while providing excellent efficiency and very low output voltage ripple when the input voltage is close to the output voltage. The ISL91127 can deliver at least 2.1A continuous output current (VOUT = 3.3V) across a battery voltage range of 2.5V to 4.35V. This maximizes the energy utilization of advanced, single-cell Li-ion battery chemistries that have significant capacity left at voltages below the system voltage.
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