ISL6146CFRZ-TK

Overview

The ISL6146CFRZ-TK is a low-voltage OR-ing FET controller from the Renesas ISL6146 family, designed for N-channel MOSFET applications. It operates with a bias voltage range of 3V to 20V and supports input voltages from 1V to 18V. The device features an internal charge pump, programmable undervoltage lockout (UVLO), and a fault output pin. It is housed in an 8-lead DFN package measuring 3mm x 3mm. Key electrical parameters include a maximum operating temperature of +125°C and a minimum of -40°C. The unit weight is approximately 22 mg.

Feature Summary

• Integrated internal charge pump enables efficient driving of N-channel power MOSFETs without external bootstrap components.
• Programmable undervoltage lockout and user-adjustable reverse current trip point via external resistors enhance system reliability.
• Open-drain fault output pin provides immediate indication of conditional or FET faults within the power distribution network.

Applications

• N+1 Industrial and Telecom Power Distribution Systems
• Uninterruptible Power Supplies (UPS)
• Low Voltage Processor and Memory Storage Systems

Procurement Notes

Verify component authenticity through authorized distributors or direct manufacturer channels due to end-of-life status. Confirm RoHS compliance and moisture sensitivity level (MSL 3) prior to assembly. Review Product Change Notifications regarding label updates and packaging format changes. Ensure supply chain stability as this part number may be discontinued; validate final datasheet specifications against current production batches.

Selection Notes

Select the ISL6146C variant specifically when the application requires a compliant mode of operation down to 3V. This model distinguishes itself from other family members by supporting specific UVLO configurations suitable for higher voltage bias rails compared to the 1V optimized variants. Ensure the design accommodates the 3V to 20V bias range and utilizes the appropriate 8-DFN footprint for thermal management.

Part Context

The ISL6146 series represents a family of OR-ing MOSFET controllers intended to replace traditional power diodes in high-efficiency power distribution systems. By utilizing N-channel MOSFETs controlled by these ICs, designers can significantly reduce conduction losses. The family includes multiple variants (A, B, C, D, E) tailored for different voltage ranges and feature sets, such as conduction monitoring or enable logic polarity.

Replacement Considerations

Direct substitutes within the same package and functionality include ISL6146CFRZ. Other family members like ISL6146BFRZ or ISL6146DFRZ may serve as alternatives if voltage requirements and enable logic align with the specific design constraints.