Renesas ISL6410AIUZ

Overview

ISL6410AIUZ from Intersil is a single synchronous buck regulator IC with integrated N- and P-channel power MOSFETs, designed for 5.0V ±10% input supply to deliver pin-programmable outputs of 3.3V, 1.8V, or 1.2V at up to 600mA continuous current. It operates at 750kHz typical switching frequency, supports external clock synchronization (500kHz–1MHz), and includes power-good (PG), enable (EN), and reset supervision functions. It serves as a compact DC-DC solution for FPGA core rails and WLAN baseband processors.

For engineers reviewing the ISL6410AIUZ datasheet, ISL6410AIUZ pinout, ISL6410AIUZ application, or ISL6410AIUZ equivalent, key selection criteria include its MSOP-10 Pb-free package, fixed-output voltage programmability via VSET, integrated current-mode PWM control with slope compensation, thermal shutdown (150°C), and UVLO thresholds specific to 5V operation (4.27V rising).

Technical Context

The ISL6410AIUZ implements peak current-mode control with internal slope compensation and a 750kHz oscillator. Its PWM stage uses integrated high-side P-MOSFET (230mΩ rDS(ON)) and low-side N-MOSFET (230mΩ rDS(ON)) for synchronous rectification, enabling >93% efficiency at 200mA/5V→3.3V. The error amplifier is internally compensated, eliminating external loop components.

It features a dedicated RESET block with 25ms timeout (set by CT capacitor), push-pull output, and VIN-monitoring thresholds (4.50–4.64V rising, 4.47–4.61V falling). The PG signal is open-drain and logic-compatible with 5V systems, asserting high when VOUT reaches ≥94.5% of nominal value.

Key Specifications

Pinout & Package

ISL6410AIUZ is housed in a Pb-free 10-lead MSOP package (JEDEC MO-187BA, pkg drawing M10.118), measuring 3.0mm × 3.0mm × 0.85mm with 0.5mm lead pitch. The exposed pad is not present in MSOP; thermal dissipation relies on PCB copper area under leads.

Key Features

Applications

Equivalent & Alternatives

The following parts are listed as comparable options for similar synchronous buck regulator applications.

Compared with TPS62231DRVR and RT8059NGSP, the ISL6410AIUZ uniquely combines pin-selectable output voltages, integrated reset supervision with CT-programmable timeout, and 5V-specific UVLO thresholds - making it optimal for cost-sensitive, medium-current 5V-rail applications where component count and system-level sequencing simplicity are critical.

Availability

ISL6410AIUZ is available at Aetrix Electronics and suitable for FPGA power delivery, WLAN baseband processor rails, and DSL modem digital signal processing applications requiring stable component supply, long-term lifecycle support, and Pb-free compliance.

Supply support for ISL6410AIUZ 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 founded in 1967, specializing in high-performance DC-DC converters, precision amplifiers, and interface ICs.

The ISL6410AIUZ belongs to Intersil's single-channel synchronous buck regulator product line, engineered for compact, low-component-count power solutions in space-constrained digital systems such as consumer networking and portable computing.

FAQ

What input voltage range is supported by the ISL6410AIUZ?

The ISL6410AIUZ supports an input voltage range of 4.5V to 5.5V, specifically optimized for 5.0V ±10% system rails. This distinguishes it from the ISL6410 (3.0–3.6V range) and ensures proper UVLO behavior, gate drive strength, and thermal performance when powered from standard 5V supplies. Operating outside this range may cause malfunction or damage to the ISL6410AIUZ.

How is the output voltage selected on the ISL6410AIUZ?

The ISL6410AIUZ output voltage is selected via the VSET pin: logic low yields 1.2V, logic high yields 3.3V, and open (floating) yields 1.8V. No external resistors are required, as the internal reference and feedback path are configured for these fixed values. This pin-programmable feature simplifies design and eliminates trimming errors associated with resistor-based feedback networks in the ISL6410AIUZ.

Does the ISL6410AIUZ include built-in protection features?

Yes, the ISL6410AIUZ integrates overcurrent protection (peak limit 700–1300mA), thermal shutdown (150°C trip, 20–25°C hysteresis), input undervoltage lockout (UVLO), and overvoltage protection (30% threshold). These functions operate autonomously without external components, enhancing system reliability and reducing failure modes in the ISL6410AIUZ-powered rail.

Can the ISL6410AIUZ be synchronized to an external clock?

Yes, the ISL6410AIUZ accepts an external CMOS clock signal on the SYNC pin within 500kHz to 1MHz. It automatically locks to the rising edge of the first valid pulse and reverts to its internal 750kHz oscillator if the external signal stops for four consecutive cycles. This capability allows noise spectral shaping in sensitive RF or audio systems using the ISL6410AIUZ.

What package type and footprint does the ISL6410AIUZ use?

The ISL6410AIUZ uses a Pb-free 10-lead MSOP package (JEDEC MO-187BA, drawing M10.118), with 3.0mm × 3.0mm body size and 0.5mm lead pitch. It is pin-compatible with other ISL6410xIU/UZ variants and requires standard MSOP reflow profiles. The absence of an exposed thermal pad differentiates it from QFN versions like ISL6410AIRZ and impacts thermal design for the ISL6410AIUZ.