ISL68137IRAZ-T

ISL68137IRAZ-T is Intersil’s (Renesas) high-performance multiphase buck controller used for voltage regulator modules (VRMs) in CPUs/GPUs and similar high-current DC‑DC converters. It does not contain MOSFETs; it drives external high-side/low-side transistors to regulate a lower rail from a higher input.
Key points:
- Multiphase operation to deliver high current with good transient response.
- Adjustable switching frequency and feedback-based output voltage regulation.
- Soft-start, enable/shutdown, and programmable/limited current protection.
- Protection features such as overcurrent, over/undervoltage, and thermal shutdown.
- Designed for use with external MOSFETs, inductors, and capacitors in VRM designs.
- Packaging: -T indicates tape and reel; IRAZ denotes RoHS-compliant packaging.
If you need exact electrical specs (max current per phase, frequency range, input/output voltage ranges, load/line regulation), refer to the datasheet for ISL68137IRAZ-T.

Direct, pin-for-pin equivalents aren’t publicly listed. ISL68137IRAZ-T is a Renesas/Intersil multi‑phase buck controller for CPU VRMs. Closest functionally similar parts from other vendors include Analog Devices LTC389x (multi‑phase buck controllers) and TI LM5170/LM5175 family (multi‑output VRM controllers). For an exact cross, consult Renesas’ cross-reference tool using your target specs (voltage rails, current, number of phases) or share them and I’ll refine suggestions.

ISL68137IRAZ-T is a multi-output, multiphase voltage regulator controller from Intersil/Renesas. Key features typically include:
- Multi-output, phase-interleaved buck regulator control for CPU/GPU rails
- Programmable output voltages per rail
- Synchronous gate drive (high-side/low-side drivers)
- Soft-start and output tracking
- Remote sense and voltage compensation
- Enable, soft-start, and Power-Good/status signals
- Overcurrent/short-circuit protection and fault reporting
- Overvoltage protection, undervoltage lockout, and thermal protection
- Fault/status reporting (and PMBus/I2C interface on variants)
- Wide input voltage range and adjustable switching frequency
- Small package with wide operating temperature (IRAZ-T indicates tape-and-reel)
Note: For exact specifications (pinout, voltage/current ratings, timing, and protections), please consult the official datasheet for the IR AZ-T variant.

Pin count: 48 pins (package variant ISL68137IRAZ-T is a 48‑pin device).
Function: Multi‑phase, synchronous buck regulator controller for VRMs (CPU power). It provides PWM/gate-drive control for external MOSFETs across multiple phases, plus feedback, current sensing, enable, PGOOD, and fault protection features.

Manufacturer: Renesas Electronics Corporation (the Intersil brand). Intersil was a U.S. semiconductor company known for analog, mixed-signal, and power-management ICs; since 2017 it has been part of Renesas, a Japanese multinational semiconductor company.
Kind of company: A global semiconductor maker specializing in analog, mixed-signal, and power-management ICs for automotive, industrial, and consumer applications.

ISL68137IRAZ-T is a multi‑phase synchronous buck controller used to build high‑current VRMs. Common applications include:
- Desktop/server/workstation CPU core/memory voltage rails
- GPU/FPGA/ASIC power rails
- Motherboard and graphics-card VRMs
- Telecom and networking equipment power modules
- Data-center/high‑performance computing power supplies
- Any high‑current DC‑DC regulator needing precise voltage and fast transient response.

32-pin QFN package (6x6 mm).