ISL69222IRAZ

ISL69222IRAZ is a DC-DC buck regulator controller IC from Intersil (now Renesas). It provides the control logic to regulate a higher input rail down to a CPU/GPU core voltage by driving external MOSFETs in a buck converter. The device handles output feedback, soft-start, enable/disable, and fault/status signaling, with a programmable switching frequency suitable for VRM designs. Typical features include protection (overcurrent, over/undervoltage) and diagnostic outputs to monitor system health. Applications are VRMs for computer motherboards, embedded processors, and other multi-phase/low-to-mid power regulators. The suffix IRaz denotes a specific package/variant; for exact electrical specs, pinout, and application notes, refer to the Renesas/ISL69222 datasheet.

- Pin count: 32 pins (ISL69222IRAZ in a 32‑pin package, e.g., TQFP/LQFP variant).
- Function: Dual‑channel, multiphase buck regulator controller for VRMs; provides two PWM control channels with gate‑drive outputs, current/voltage feedback, oscillator/frequency control, soft‑start, enable/PG, and protection features for CPU/GPU voltage regulation.

- Manufacturer: Renesas Electronics Corporation (the Intersil lineage; Intersil was acquired by Renesas, and ISL69222 originates from Intersil).
- What kind of company: A Japanese multinational semiconductor company, one of the world’s largest suppliers of analog and power-management ICs, microcontrollers, and related devices for automotive, industrial, and consumer markets.

ISL69222IRAZ is a multi‑phase synchronous buck regulator controller for digital power delivery. Typical applications include:
- Desktop/server CPU core VRMs
- GPU/SoC and FPGA/ASIC power rails
- Memory subsystem voltage regulation
- Notebook and embedded compute platforms
- Telecom and data-center networking equipment power modules

It comes in a 28‑lead QFN package (4.0 x 4.0 mm), RoHS compliant.