Renesas ISL9113ERAZ-EVZ

Overview

ISL9113ERAZ-EVZ from Renesas Electronics is an evaluation board designed to validate the adjustable-output ISL9113ERAZ boost regulator IC for low-input-voltage battery-powered systems. It supports input voltages from 0.8V to 4.7V, delivers up to 500mA at user-configurable output voltage, operates at 1.8MHz switching frequency, and functions across –20°C to +85°C ambient temperature - enabling rapid prototyping of portable medical sensors and ultra-low-power IoT edge nodes.

For engineers reviewing the ISL9113ERAZ-EVZ datasheet, ISL9113ERAZ-EVZ pinout, ISL9113ERAZ-EVZ application, or ISL9113ERAZ-EVZ equivalent, this board provides direct access to FB, SW, EN, VIN, VOUT, AGND, and PGND test points; jumper-selectable enable control; and a validated 2-layer PCB layout optimized for high-efficiency boost conversion with 2.2µH inductor and dual 4.7µF ceramic output capacitors.

Technical Context

The ISL9113ERAZ-EVZ implements the ISL9113ERAZ IC's proprietary low-voltage boost algorithm, enabling regulation down to 0.8V input - critical for single-cell Li-ion/Li-polymer and multi-cell alkaline/NiMH battery discharge tails. Its fixed 1.8MHz switching frequency minimizes external component count while maintaining PFM/PWM mode transition capability across load ranges.

Board-level design integrates dedicated test points for SW node probing, FB voltage adjustment verification, and EN logic monitoring; jumper J2 configures EN tied to VIN for automatic startup, and the shared PCB platform (with ISL9113ER7Z-EVZ) ensures consistent thermal and EMI behavior across fixed- and adjustable-output variants.

Key Specifications

Availability

ISL9113ERAZ-EVZ is available at Aetrix Electronics and suitable for battery-powered sensor nodes, wearable health monitors, handheld diagnostic tools, and energy-harvesting subsystems requiring stable component supply and fast evaluation-to-design-cycle turnaround.

Supply support for ISL9113ERAZ-EVZ 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, infrastructure, and IoT applications.

The ISL9113ERAZ-EVZ belongs to Renesas' precision analog power evaluation platform family, engineered to accelerate validation of high-efficiency, ultra-low-input-voltage DC/DC boost regulators in space-constrained, battery-dependent systems.

FAQ

What is the primary function of the ISL9113ERAZ-EVZ?

The ISL9113ERAZ-EVZ is an evaluation board for the ISL9113ERAZ adjustable-output boost regulator IC. It provides a fully assembled, tested platform to characterize efficiency, transient response, start-up behavior, and FB loop stability under real-world low-input-voltage conditions - specifically supporting development of battery-powered devices where input can drop as low as 0.8V. The ISL9113ERAZ-EVZ includes all necessary passives, test points, and jumper controls to evaluate the IC without custom PCB design.

How do I configure the output voltage on the ISL9113ERAZ-EVZ?

The ISL9113ERAZ-EVZ uses the FB pin of the ISL9113ERAZ IC to set output voltage via an external resistor divider. By populating resistors R1 and R2 (designators per Table 1), users define VOUT = 0.6V × (1 + R1/R2). The board includes footprints for both resistors but ships with R1 and R2 unpopulated (DNP), allowing full flexibility. Reference designs and calculation examples are provided in the ISL9113 datasheet and AN1816 user manual for the ISL9113ERAZ-EVZ.

Does the ISL9113ERAZ-EVZ include fault indication like the ISL9113ER7Z-EVZ?

No - the ISL9113ERAZ-EVZ does not include on-board LED fault indication. That feature is implemented only on the ISL9113ER7Z-EVZ (fixed 5V version) via D1 and associated circuitry. The ISL9113ERAZ-EVZ schematic (Figure 5) omits the LED and its current-limiting resistor; fault detection must be verified externally using the FAULT pin signal or by monitoring VOUT regulation deviation with a scope or digital multimeter during overload, overvoltage, or thermal shutdown events.

What power source and load connections does the ISL9113ERAZ-EVZ support?

The ISL9113ERAZ-EVZ accepts input power via J1 (2-pin header), rated for 0.8V–4.7V DC, and connects output load via J3 (2-pin header), rated for up to 500mA continuous current. Both headers use standard 0.1"-spaced male pins compatible with common breadboards and electronic loads. Additional test points (TP2–TP10) provide direct access to VIN, VOUT, SW, EN, FB, AGND, and PGND for oscilloscope probing and precision measurement without soldering or wire wrapping.

Can the ISL9113ERAZ-EVZ be used to evaluate the fixed-output ISL9113ER7Z IC?

No - the ISL9113ERAZ-EVZ is specifically configured for the adjustable-output ISL9113ERAZ IC (U1 = ISL9113ERAZ in Table 1). While it shares the same PCB layout as the ISL9113ER7Z-EVZ, the bill of materials differs: the ISL9113ER7Z-EVZ populates different feedback resistors to fix VOUT at 5V and adds an LED fault indicator. Swapping ICs without updating the FB network will result in incorrect or unstable output voltage; Renesas explicitly assigns each board variant to its matching IC part number.