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ISL91127IR - 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.
  • Output current: up to 2A (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 and undervol.

📥 Download Datasheet

Datasheet Details

Part number ISL91127IR
Manufacturer Renesas
File Size 1.01 MB
Description High Efficiency Buck-Boost Regulator
Datasheet download datasheet ISL91127IR Datasheet

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Full PDF Text Transcription

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DATASHEET ISL91127IR High Efficiency Buck-Boost Regulator with 4.5A Switches FN8859 Rev 1.01 Aug 26, 2022 The ISL91127IR is a high-current buck-boost switching regulator for systems using new battery chemistries. It uses 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 ISL91127IR is capable of delivering at least 2A continuous output current (VOUT = 3.3V) over 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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