ISL80101IRAJZ-TK

ISL80101IRAJZ-TK is a DC-DC buck regulator controller from Intersil (now Renesas) used to generate stable VRM rails for CPUs, GPUs, and other digital loads. The -TK suffix indicates tape-and-reel packaging; IRAJZ is a variant/lot code.
Key points:
- Purpose: PWM current‑mode buck controller that drives external MOSFETs to regulate output voltage.
- Features: adjustable output via feedback, programmable switching frequency, soft-start, enable/power‑good, and protection (OC/OV/UV, fault reporting).
- Architecture: requires external high/low-side MOSFETs, inductor, and diode (for non-synchronous paths) plus a feedback network.
- Applications: CPU/GPU core power rails, memory/embedded power supplies, VRMs in boards and notebooks.
- Info: exact pinout, electrical specs, and recommended operating conditions are in the datasheet; confirm package details in Renesas/Intersil resources or distributor listings.
If you need precise specs or a pinout, I can pull the latest datasheet highlights.

ISL80101IRAJZ-TK is a dual-channel DC-DC regulator/PMIC device from Intersil. Key features typically include:
- Dual synchronous buck regulator stages (integrated FETs) for two independent rails
- Wide input voltage range and high efficiency
- Adjustable output voltages per channel with remote sense
- Programmable switching frequency (up to MHz range) and soft-start
- Output voltage sequencing and margining options
- Overcurrent/short‑circuit protection, overvoltage protection, UVLO
- Thermal shutdown with fault protection
- Enable control and Power-Good (monitoring) signals
- Status/diagnostic reporting (faults, current/voltage monitoring)
- Interface for control/monitoring (commonly I2C/SMBus or pin‑based control)
- Package: TK (Tape & Reel) variant, suitable for automated assembly
Note: exact voltage ranges, pinout, and interface details vary by variant. For precise specifications of ISL80101IRAJZ-TK, consult the latest datasheet.

- Pin count: 16 pins (in the ISL80101IRAJZ-TK package; -TK indicates Tape & Reel).
- Function: A single-channel step-down (buck) DC-DC regulator/controller, typically with integrated MOSFETs, used to generate a regulated POL output with features like adjustable output, feedback, enable, and soft-start.

Manufacturer: Intersil (now part of Renesas Electronics).
What kind of company: A semiconductor company specializing in analog and power-management integrated circuits.

- Portable consumer electronics (notebooks, tablets, handheld devices)
- Embedded systems (SoC/CPU/FPGA core rails)
- Telecom and networking equipment power rails
- Industrial/instrumentation systems (sensor nodes, controllers)
- Battery-powered devices (wearables, portable medical)
- Automotive power management (12V to lower rails)

TK indicates Tape‑and‑Reel packaging. The exact physical package (e.g., QFN or TQFP) is defined in the ISL80101 datasheet; refer to it for the precise package geometry.