ISL8844AAUZ-T

AC DC Converters, Offline Switchers Overview

The ISL8844AAUZ-T is a current mode PWM switch controller from the ISL8844A series, manufactured by Renesas Electronics Corporation. It supports Boost and Flyback topologies with a single output. The device operates at a switching frequency of 2 MHz and features a maximum duty cycle of 48%. It provides an output voltage of 1 V and an output current of 1 A. The component functions within a temperature range of -40°C to +105°C and is housed in an 8-lead MSOP surface-mount package.

AC DC Converters, Offline Switchers Feature Summary

• Implements current mode PWM control for efficient power conversion
• Supports multiple converter topologies including Boost and Flyback configurations
• Features high-speed switching capability up to 2 MHz

AC DC Converters, Offline Switchers Applications

• Telecom and datacom power supplies
• Wireless base station power systems
• Industrial power systems
• PC power supplies
• Isolated buck and flyback regulators

AC DC Converters, Offline Switchers Procurement Notes

Verify component authenticity through authorized channels as this part is listed as obsolete. Confirm RoHS compliance status via official documentation before integration. Check for potential supply chain disruptions due to end-of-life status. Ensure storage conditions meet moisture sensitivity level requirements for the MSOP package. Validate pin compatibility if replacing existing designs.

AC DC Converters, Offline Switchers Selection Notes

Select this controller for designs requiring compact MSOP packaging and high-frequency operation. Consider the 48% maximum duty cycle limitation when designing boost converters. Verify that the 1 A output drive capability meets gate driver requirements for the external MOSFET. Ensure input voltage ranges align with the specified operational limits for stable performance across the industrial temperature range.

AC DC Converters, Offline Switchers Part Context

The ISL8844AAUZ-T belongs to the ISL8844A family of high-performance single-ended current mode PWM controllers. This series serves as a drop-in replacement for legacy 28C4x and 18C4x controllers. The family is designed for wide-ranging power conversion applications, offering fast signal propagation and low operating currents suitable for modern energy-efficient designs.

AC DC Converters, Offline Switchers Replacement Considerations

The datasheet identifies the ISL8840A as a compatible alternative within the same product family. Verify pinout and electrical parameter equivalence before substitution. Other variants in the ISL8844A series may offer different package options but share core functionality.