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ISL95812IRZ

Name: ISL95812IRZ
Rating: 4.7 (12 reviews)

IC REG CTRLR INTEL 1OUT 32QFN

メーカー
Mfr。パート #ISL95812IRZ
パッケージ QFN-EP-32
データシート
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仕様

Package	Tube
Series	Robust Ripple Regulator™ (R3)
ProductStatus	Active
Applications	Controller, Intel VR12.5, VR12.6, VR12.6+
Voltage-Input	4.5V ~ 28V
NumberofOutputs	1
Voltage-Output	0.5V ~ 2.3V
OperatingTemperature	-40°C ~ 85°C
MountingType	Surface Mount
Package/Case	32-VFQFN Exposed Pad

概要

Description

ISL95812IRZ is a multiphase buck regulator controller from Intersil (Renesas). It serves as the control engine to build CPU/GPU core voltage rails (VRMs) by driving external MOSFETs in one or more phases. Key roles are PWM control, soft‑start, and regulation of a high‑current DC‑DC converter, with protections such as overcurrent/short‑circuit, over‑temperature, and undervoltage. The device supports adjustable output voltages and the benefits of multiphase operation (better transient response and efficiency). The IRZ suffix denotes the package type. Typical applications include motherboard/graphics card VRMs and other high‑current DC‑DC applications requiring flexible, high‑performance voltage regulation. For exact specs (number of phases, input/output voltage ranges, switching frequency, current capability, pinout), consult the datasheet.

Features

ISL95812IRZ is a digital, multi‑phase VRM/PMIC from Intersil. Key features (concise):
- PMBus/I2C digital control and telemetry for full programmability
- Multi‑phase buck regulator support (configurable number of phases)
- Independent programmable output voltages per rail with ramp/soft‑start and voltage margining
- Adjustable switching frequency and phase interleaving
- Power-on sequencing and rail tracking capabilities
- Protections: overvoltage, undervoltage, overcurrent/short‑circuit, thermal shutdown
- Fault reporting and status via PMBus alerts/STATUS pins
- Diagnostics: monitoring of VOUT, VIN, current, temperature
- Load‑line calibration and current‑limit features
- Suitable for CPU core/mVRM applications
- Package: IRZ (QFN) format
Note: exact phase count, voltage ranges, and clock specs depend on the specific design revision; consult the datasheet for precise figures.

Package

ISL95812IRZ uses a 28‑pin QFN package (5×5 mm) with an exposed pad.

Pinout

- Pin count: 48-pin QFN (IRZ package)
- Function: 12-channel, multi-rail DC-DC buck regulator controller (PWM controller) used to drive external MOSFETs for CPU VRMs, providing multi-rail voltage regulation with sequencing and feedback.

Manufacturer

- Manufacturer: Renesas Electronics Corporation (Intersil brand).
- What kind of company: A Japanese multinational semiconductor company that designs and manufactures analog, mixed-signal, and power-management ICs (Intersil was acquired by Renesas in 2017).

Application

ISL95812IRZ is a multi-rail, multi-phase buck regulator controller for power management. Typical applications include:
- CPU/GPU core voltage regulation in desktops and servers
- Motherboard VRMs and graphics cards
- Notebook and embedded systems with multiple rails
- Telecom/network equipment power supplies
- FPGA/ASIC power rails
- Any compact system needing several programmable VRMs.

Equivalent

Direct cross-references for ISL95812IRZ aren’t publicly published. Closest functional relatives are other ISL958x VRM controllers in the Renesas/Intersil family (e.g., ISL9581/ISL9583), depending on required phases and features (PMBus, voltage ranges). For a precise substitute, provide specs (phases, PMBus, input/output voltages, package) or allow me to look up cross-reference databases.