ISL9305IRTBFNCZ-T

Overview

The ISL9305IRTBFNCZ-T is a quad output PMIC from Renesas, integrating two buck converters and two LDOs. It operates within a 1.5V to 5.5V supply range at a 3MHz switching frequency. Output 1 provides 1.5V at 800mA, Output 2 delivers 2.5V at 800mA, and Output 3 supplies 3.3V at 350mA. The device is housed in a 16-TQFN (4x4) package with an exposed pad, rated for -40°C to 85°C operation.

Feature Summary

• Integrates dual synchronous buck regulators and dual low-dropout linear regulators in a single compact package.
• Features a high-frequency 3MHz switching architecture to minimize external passive component size.
• Provides independent programmable outputs tailored for powering multiple voltage rails simultaneously.

Applications

• Portable electronic devices requiring multi-rail power distribution
• Embedded systems with mixed analog and digital load requirements
• Industrial control modules needing compact power solutions

Procurement Notes

Verify the specific suffix 'NCZ' against the manufacturer's current datasheet to confirm pinout and electrical specifications match your design requirements. Confirm RoHS3 compliance status as per the latest production change notices. Check for end-of-life notifications or alternative lead-free packaging updates before finalizing procurement plans.

Selection Notes

Select this component when space constraints require combining switching and linear regulation. Ensure input voltage remains between 1.5V and 5.5V. Verify that the required output currents do not exceed the 800mA limit for the buck channels or 350mA for the specified LDO. Consider thermal dissipation capabilities of the 16-TQFN package under maximum load conditions.

Part Context

This part belongs to the ISL9305 family of quad-output power management ICs designed for portable applications. It consolidates power stages to reduce board area compared to discrete solutions. The device supports efficient power delivery for complex system-on-chip architectures common in modern consumer electronics.

Replacement Considerations

• ISL9305IRTBFNCZ

FAQ

What is the switching frequency of the buck converters?

The internal buck converters operate at a fixed switching frequency of 3MHz.

Does the device include over-temperature protection?

Yes, the IC includes thermal shutdown protection to safeguard against overheating during fault conditions.