ISL6841IBZ

Power Supply Controllers, Monitors Overview

The ISL6841IBZ is a single-ended current mode PWM controller from the Intersil ISL684x family, designed for boost, flyback, and isolated output power conversion applications. It features peak current mode control for effective transient handling and inherent overcurrent protection. The device includes a 1A MOSFET gate driver with 20ns rise and fall times under a 1nF load. Key electrical parameters include a 60μA start-up current, adjustable switching frequency up to 2MHz, and a 25ns propagation delay from current sense to output. It operates within an industrial temperature range of -40°C to +85°C.

Power Supply Controllers, Monitors Feature Summary

• Implements peak current mode control to manage power transients and provide inherent overcurrent protection.
• Features a high-current 1A MOSFET gate driver with fast 20ns rise and fall times.
• Offers adjustable operating frequency up to 2MHz with trimmed timing capacitor discharge for accurate duty cycle control.
• Provides tight tolerance voltage reference and current limit thresholds across line, load, and temperature variations.

Power Supply Controllers, Monitors Applications

• Telecom and Datacom Power Supplies
• Wireless Base Station Power Systems
• File Server Power Supplies
• Industrial Power Systems
• PC Power Supplies

Power Supply Controllers, Monitors Procurement Notes

Verify the specific suffix IBZ indicates lead-free plus anneal packaging compliant with RoHS standards. Confirm the package type is 8-lead SOIC. Check manufacturer documentation for end-of-life status or last-time-buy notices, as older Intersil parts may have limited availability. Ensure the supplier provides valid traceability and authenticity guarantees for electronic components.

Power Supply Controllers, Monitors Selection Notes

Select this component when pin compatibility with the industry-standard 384x family is required alongside improved performance metrics. Consider the ISL6841 for designs needing low start-up current and high peak current drive capability. Evaluate the adjustable frequency range against system noise requirements. Compare against similar family members like ISL6840 or ISL6842 if different pinouts or specific feature sets are needed for the application.

Power Supply Controllers, Monitors Part Context

The ISL6841 belongs to the ISL684x family of adjustable frequency, low-power PWM controllers. These devices utilize advanced BiCMOS design to offer significantly improved performance over legacy counterparts. The family is engineered for a wide range of power conversion topologies, providing a robust solution for modern power supply designs requiring efficiency and reliability.

Power Supply Controllers, Monitors Replacement Considerations

The datasheet notes that the ISL684x family is pin-compatible with the industry standard 384x family of controllers. Designers can consider direct replacements from other manufacturers offering equivalent 384x-compatible current mode PWM controllers, provided they meet the specific electrical requirements such as gate drive current and switching frequency limits.