Renesas ISL97519IUZEVALZ

Overview

ISL97519IUZEVALZ from Intersil is an evaluation board for the ISL97519 - a high-efficiency, 600kHz/1.2MHz PWM step-up DC-DC regulator with integrated 2.0A/200mΩ MOSFET, 1% output voltage accuracy, and operation from 2.3V to 5.5V input to 1.1×VIN–25V output. It targets TFT-LCD bias supplies and portable display power.

For engineers reviewing the ISL97519IUZEVALZ datasheet, ISL97519IUZEVALZ pinout, ISL97519IUZEVALZ application, or ISL97519IUZEVALZ equivalent, this board enables rapid validation of boost converter performance, soft-start behavior, frequency selection (600kHz vs. 1.2MHz), compensation network tuning, and thermal response under load across -40°C to +105°C.

Technical Context

The ISL97519IUZEVALZ implements the ISL97519 IC in a fully assembled, tested reference design using a standard 8-lead MSOP package. It supports both switching frequencies via FSEL pin configuration and includes external RC compensation (COMP pin), adjustable soft-start (SS pin), and feedback resistor divider (FB pin) for precise output regulation.

This evaluation platform exposes all critical control signals - EN for shutdown, FSEL for frequency selection, SS for soft-start timing, and COMP for loop stability tuning - enabling direct measurement of transient response, efficiency curves, line/load regulation, and thermal derating under real-world conditions.

Key Specifications

Availability

ISL97519IUZEVALZ is available at Aetrix Electronics and suitable for TFT-LCD display development, portable equipment power architecture validation, and high-efficiency boost converter design requiring stable component supply and documented thermal performance.

Supply support for ISL97519IUZEVALZ 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

Intersil Corporation (now part of Renesas Electronics) is a U.S.-based analog and power management semiconductor company known for high-performance DC-DC converters, precision references, and interface ICs.

The ISL97519IUZEVALZ belongs to Intersil's high-frequency boost regulator product line, designed specifically for compact, high-efficiency power conversion in space-constrained portable displays and battery-powered systems.

FAQ

What is the primary function of the ISL97519IUZEVALZ evaluation board?

The ISL97519IUZEVALZ is a fully assembled evaluation platform for the ISL97519 step-up DC-DC regulator IC. It allows engineers to validate key performance metrics - including efficiency, transient response, soft-start behavior, and thermal stability - without designing a custom PCB. The board implements the typical application circuit from the ISL97519 datasheet (FN6454), with accessible test points for all critical nodes (LX, COMP, FB, SS, FSEL, EN).

Does the ISL97519IUZEVALZ support both 600kHz and 1.2MHz switching frequencies?

Yes, the ISL97519IUZEVALZ supports both frequencies via the FSEL pin. Pulling FSEL low selects ~620kHz operation; connecting it to VDD selects ~1.25MHz. This dual-frequency capability is implemented directly on the board with jumper options or solder pads, enabling direct comparison of inductor size, output ripple, and transient response trade-offs during prototyping.

Can the ISL97519IUZEVALZ be used to evaluate thermal performance under full load?

Yes. The ISL97519IUZEVALZ uses the same 8-lead MSOP package (M8.118A) and layout practices as specified in FN6454, with thermal data validated per JEDEC JESD51-7 (high-conductivity board). It supports continuous 1A output current testing and includes thermal characterization curves in the datasheet, allowing users to correlate measured junction temperature rise with ambient conditions and heatsinking options.

What output voltage configurations are supported out-of-the-box on the ISL97519IUZEVALZ?

The ISL97519IUZEVALZ ships with default resistor dividers configured for common TFT-LCD bias voltages - typically 9V and 12V outputs - based on the ISL97519's 1.294V internal reference (VFB). Users can easily modify R1/R2 values to set any output between 1.1×VIN and 25V, with recommended total divider resistance below 100kΩ to minimize error from FB bias current (≤0.5µA).

Is the ISL97519IUZEVALZ RoHS compliant and lead-free?

Yes. The ISL97519IUZEVALZ uses the ISL97519IUZ IC, which is Pb-free (RoHS compliant) and halogen-free, with 100% matte tin (e3) termination finish compatible with both SnPb and Pb-free reflow profiles. The board itself follows IPC-J-STD-020 MSL guidelines and supports standard lead-free assembly processes.