ISL9228IRZ

ISL9228IRZ is a 4-channel Power Management and Supply Controller IC from Intersil, specifically designed for battery-charger applications. It integrates highly optimized battery charging and system-power-management capabilities into a single IC, making it the ideal choice for portable designs. The ISL9228IRZ integrates four linear-regulator channels and a single switching-regulator channel, with built-in safety features that protect the battery and eliminate external components.

The ISL9228IRZ features linear regulation with 0.2Ω output- series resistance and up to 1A current-limit capability. It supports a wide range of input voltages from 2.5V to 16V, making it ideal for charging from a broad variety of sources, including USB and wall adapters. The four independent linear regulator channels provide excellent line and load regulation, achieving a ± 2% output voltage accuracy for both input and output voltages.

ISL9228IRZ also features a buck-regulator channel, integrated power MOSFETs and low MOSFET RONs. This makes it ideal for high efficiency power management applications and offers the flexibility to configure multiple output voltages via an I2C interface. It can supply up to two buck-regulator channels at 0.6V to 3.6V and four linear-regulator channels at 0.6V to 5.5V.

ISL9228IRZ also includes safety features that protect a battery in the event of an over-voltage, over-current or short-circuit condition. It also includes an over-temperature protection that prevents excessive heating by automatically reducing the current in overload conditions.

In summary, ISL9228IRZ is a complete and optimized solution for multi-channel power management and supply control for portable applications. It integrates linear and buck-regulators, a wide input voltage range and an extensive selection of safety features. Combined with its high output current capability, integrated power MOSFETs and low-MOSFET RONs, the ISL9228IRZ is the ideal choice for battery charger and power management applications.