Renesas ISL9104IRUFEVAL1Z

Overview

ISL9104IRUFEVAL1Z from Renesas Electronics is an evaluation board designed to test the ISL9104IRUFZ-T, a 2.5V fixed-output, 4.3MHz synchronous step-down regulator delivering up to 500mA. It features onboard input (VIN/GND) and output (VO/GND) connectors, jumper JP1 for enable/disable control, and supports ambient operation from –40°C to +85°C.

For engineers reviewing the ISL9104IRUFEVAL1Z datasheet, ISL9104IRUFEVAL1Z pinout, ISL9104IRUFEVAL1Z application, or ISL9104IRUFEVAL1Z equivalent, this board enables rapid validation of ISL9104IRUFZ-T performance under real load conditions, including efficiency, transient response, and thermal behavior across 2.7–6.0V input range.

Technical Context

The ISL9104IRUFEVAL1Z implements the ISL9104IRUFZ-T - a high-frequency (4.3MHz), low-quiescent-current buck regulator in a 1.6mm × 1.6mm µTDFN-6 package. It uses internal P-MOSFET switching with integrated feedback network configured for 2.5V fixed output.

Input voltage range is 2.7V to 6.0V (or V_OUT + V_DROP, whichever is higher), supporting compact external components: 1µH inductor (L1), dual 4.7µF X5R input/output capacitors (C1/C2), and zero-ohm R1 for fixed-output configuration. No R2 or C3 are populated on this variant.

Key Specifications

Availability

ISL9104IRUFEVAL1Z is available at Aetrix Electronics and suitable for power management validation, DC-DC converter design verification, and embedded system bring-up requiring stable component supply and documented reference performance.

Supply support for ISL9104IRUFEVAL1Z 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 is a global semiconductor manufacturer specializing in microcontrollers, analog power devices, and timing solutions, with broad industrial and automotive portfolio coverage.

The ISL9104 product line delivers compact, high-frequency buck regulators targeting space-constrained portable and battery-powered applications where low quiescent current and fast transient response are critical.

FAQ

What is the purpose of the ISL9104IRUFEVAL1Z evaluation board?

The ISL9104IRUFEVAL1Z evaluation board provides a fully assembled platform to characterize the ISL9104IRUFZ-T 2.5V fixed-output buck regulator. It enables measurement of efficiency, load/line regulation, startup behavior, and thermal performance without custom PCB design. Engineers use ISL9104IRUFEVAL1Z to validate ISL9104IRUFZ-T integration into end systems before final layout.

Which IC does the ISL9104IRUFEVAL1Z evaluate?

The ISL9104IRUFEVAL1Z evaluates the ISL9104IRUFZ-T - a 2.5V fixed-output, 4.3MHz synchronous step-down regulator in a 1.6mm × 1.6mm µTDFN-6 package. The board populates no external feedback resistors (R1 = 0Ω, R2 unpopulated) and omits C3, matching the factory-programmed 2.5V configuration of ISL9104IRUFZ-T.

How do I enable or disable the regulator on the ISL9104IRUFEVAL1Z?

Use jumper JP1: place the shunt on pins 1–2 ("Enable") to assert the EN pin high and activate the ISL9104IRUFZ-T; place it on pins 2–3 ("Disable") to pull EN low and halt switching. This allows safe testing under no-load or pre-power conditions. The ISL9104IRUFEVAL1Z schematic confirms JP1 directly controls the EN terminal of the ISL9104IRUFZ-T.

What input voltage range is supported by the ISL9104IRUFEVAL1Z?

The ISL9104IRUFEVAL1Z supports input voltages from 2.7V to 6.0V, aligned with the ISL9104IRUFZ-T's operational limits. This range accommodates common sources like single-cell Li-ion (up to 4.2V), USB 5V, and industrial 3.3V rails. Exceeding 6.0V risks damage to the ISL9104IRUFZ-T and board components.

Does the ISL9104IRUFEVAL1Z include test points for oscilloscope probing?

Yes - the ISL9104IRUFEVAL1Z includes TP1, a Tektronix 131503100 scope probe test point located near the SW node of the ISL9104IRUFZ-T. This allows direct observation of switching waveform, duty cycle, and ringing behavior. Though not pre-populated in all units per AN1522, TP1 footprint is present on the PCB for optional installation.