ISL91128 Datasheet (Renesas) - High Efficiency Buck-Boost Regulator

ISL91128, High Efficiency Buck-Boost Regulator

PIN # PIN NAMES DESCRIPTION A1, A2, A3 PVIN Power input.

Range: 1.8V to 5.5V.

Connect 2x10μF capacitors to PGND.

B1, B2, B3 LX1 Inductor connection, input side C1, C2 PGND Power ground for high switching current D1, D2, D3 LX2 Inductor connection, output side E1, E2, E3 C4 C3 VOUT SD

DATASHEET ISL91128 High Efficiency Buck-Boost Regulator with 4.5A Switches and I2C Interface FN8732 Rev.3.00 May 3, 2018 The ISL91128 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 device also includes a selectable Bypass mode for low p

ISL91128 Features

* that can be accessed using an I2C bus interface. With a programmable output voltage range of 1.9V to 5.0V, the ISL91128 is ideal for applications requiring dynamically changing supply voltages. A programmable slew rate can be selected to provide smooth transitions between output voltage settings. Th