Renesas ISL8002DEMO1Z

Overview

ISL8002DEMO1Z from Renesas Electronics is a demonstration board designed to evaluate the ISL8002B 2A synchronous step-down DC/DC converter in point-of-load applications with 2.7V–5.5V input, 1.8V fixed output, and 2MHz switching frequency. It supports PFM/PWM mode selection, output tracking, external soft-start programming, and delivers up to 95% peak efficiency.

For engineers reviewing the ISL8002DEMO1Z datasheet, ISL8002DEMO1Z pinout, ISL8002DEMO1Z application, or ISL8002DEMO1Z equivalent, this board provides validated reference design, thermal layout guidance, and performance curves for fast evaluation of transient response, sequencing, and efficiency under 2A load conditions.

Technical Context

The ISL8002DEMO1Z implements the ISL8002B monolithic buck regulator using peak current mode control architecture, enabling stable operation at low duty cycles and fast transient response. It integrates internal high- and low-side MOSFETs, supports 2MHz fixed-frequency operation, and uses an 8-pin 2mm×2mm TDFN package with exposed thermal pad.

This board is pre-configured for 1.8V output with VTRACK = 1.8V, selectable PFM/PWM via MODE pin, and programmable soft-start via SS/TR pin. It includes overcurrent, short-circuit, and over-temperature protection circuits verified per ISL8002B functional specifications.

Key Specifications

Availability

ISL8002DEMO1Z is available at Aetrix Electronics and suitable for power management validation, DC/DC converter qualification, and embedded system bring-up requiring stable component supply and production-ready reference design fidelity.

Supply support for ISL8002DEMO1Z includes scheduled delivery planning, volume procurement assistance, BOM continuity management, traceable sourcing, and lifecycle availability coordination for OEM customers, industrial embedded developers, connected-device designers, and electronics production programs.

Manufacturer

Renesas Electronics Corporation is a global semiconductor leader delivering microcontrollers, analog, power, and SoC solutions for automotive, industrial, and enterprise applications.

The ISL8002DEMO1Z belongs to Renesas' precision power demonstration platform family, engineered to accelerate adoption of high-efficiency, small-footprint DC/DC converters in space-constrained point-of-load designs.

FAQ

What is the primary function of the ISL8002DEMO1Z?

The ISL8002DEMO1Z is a fully assembled demonstration board built to evaluate the ISL8002B 2A synchronous buck converter. It provides immediate hardware validation of key performance metrics-including startup behavior, load transient response, efficiency, and tracking capability-under real-world operating conditions with 2.7V–5.5V input and 1.8V output. The ISL8002DEMO1Z includes test points, configurable jumpers, and documented layout practices to support rapid engineering assessment.

Does the ISL8002DEMO1Z support adjustable output voltage?

No-the ISL8002DEMO1Z is configured for fixed 1.8V output per its UG008 user guide and schematic (R1/R2 feedback divider set to 1.8V). While the underlying ISL8002B IC supports adjustable VOUT from 0.6V to 80% of VIN via external resistor divider on FB pin, the ISL8002DEMO1Z board does not include provisions for reconfiguration; changing output requires modifying R1/R2 and verifying loop stability. The ISL8002DEMO1Z serves as a turnkey 1.8V evaluation platform-not a general-purpose adjustable regulator demo board.

How is output tracking implemented on the ISL8002DEMO1Z?

Output tracking on the ISL8002DEMO1Z is enabled by connecting the SS/TR pin to a resistor divider across VIN and PGND (R3/R4), matching the ratio of the main feedback divider (R1/R2). This configures ratiometric or coincidental startup/shutdown relative to another supply rail. When tracking is inactive, SS/TR is tied to VIN for 1ms internal soft-start. The board's schematic (Page 3) and test steps (Page 2) confirm this implementation, and Figures 11–16 in the manual validate tracking waveforms at full load.

What are the thermal design features of the ISL8002DEMO1Z?

The ISL8002DEMO1Z incorporates thermal design best practices for the ISL8002B's 8-pin TDFN package: a large copper area connected to the exposed thermal pad (EP), at least four vias beneath the pad, and placement of input/output capacitors adjacent to VIN and PGND pins. The board layout guidelines (Page 3) emphasize minimizing the power loop and separating noisy PHASE traces from feedback paths-directly supporting reliable 2A operation at 95% efficiency without forced airflow.

Can the ISL8002DEMO1Z be used for production-level testing?

Yes-the ISL8002DEMO1Z is intended for engineering validation and pre-compliance testing, not end-product deployment. Its PCB layout follows Renesas' recommended guidelines for EMI, thermal, and power integrity, and it includes test points (TP1–TP5) for probing VIN, VO, PGND, EN, and PG signals. While not certified for safety or regulatory compliance, the ISL8002DEMO1Z delivers production-representative performance data for design-in decisions, including transient response, sequencing timing, and efficiency mapping across temperature and load.