ISL91127IR Datasheet (Renesas) - High Efficiency Buck-Boost Regulator

ISL91127IR, High Efficiency Buck-Boost Regulator

PIN # PIN NAMES DESCRIPTION 6, 7, 8, 9 PVIN Power input.

Range: 1.8V to 5.5V.

Connect 2x10μF capacitors to PGND.

4, 5 LX1 Inductor connection, input side 3 PGND Power ground for high switching current 1, 2 LX2 Inductor connection, output side 17, 18, 19, 20 VOUT Buck-boost regulator o

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 curren

ISL91127IR 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%