ISL91302BIIZ-TR5931

Voltage Regulators - DC DC Switching Regulators Overview

The ISL91302BIIZ-TR5931 is a dual or single output synchronous multiphase buck switching regulator from Renesas Electronics. It delivers up to 5A per phase continuous output current using four integrated power stages configurable for 3+1, 2+2, or single 4-phase topologies. The device operates with a supply voltage range of 2.5V to 5.5V and achieves 94% peak efficiency within a compact 7x10 mm² solution size. It features proprietary R5 modulator technology for robust transient response and supports I2C/SPI interfaces for programmable PWM frequency (2MHz–6MHz) and output voltage (0.3V–2.0V).

Voltage Regulators - DC DC Switching Regulators Feature Summary

• Configurable multi-output architecture supporting 3+1, 2+2, or single 4-phase modes.
• Proprietary R5 modulator technology ensures excellent loop stability and fast transient response.
• Integrated low ON-resistance MOSFETs maximize efficiency while minimizing external component count.
• Supports Dynamic Voltage Scaling (DVS) with selectable slew rates for each output.

Voltage Regulators - DC DC Switching Regulators Applications

• Smartphone and tablet application processors
• Artificial intelligence (AI) processors
• Field-programmable gate arrays (FPGAs)
• Industrial microprocessors (MPUs)

Voltage Regulators - DC DC Switching Regulators Procurement Notes

Verify the specific suffix TR5931 against official Renesas documentation to confirm tape-and-reel packaging specifications and lot traceability requirements. Ensure compatibility with standard WLCSP handling procedures due to the 0.4mm pin pitch. Cross-reference the ordering part number with the latest datasheet revision to validate active status and RoHS compliance details before finalizing procurement.

Voltage Regulators - DC DC Switching Regulators Selection Notes

Select this component when designing systems requiring high current density and flexible output configurations for CPU or GPU core power. It is suitable for applications needing ultra-fast transient response with minimal output capacitance. Consider its I2C/SPI programmability for dynamic voltage scaling needs in mobile and industrial networking devices where space constraints are critical.

Voltage Regulators - DC DC Switching Regulators Part Context

This part belongs to the ISL91302 series of multiphase PMICs designed for high-efficiency power delivery. It complements other Renesas solutions like the ISL91301A/B by offering enhanced configurability for dual or single output rails. The series targets modern portable electronics and industrial control systems requiring compact footprints and high performance.

Voltage Regulators - DC DC Switching Regulators Replacement Considerations

Official substitutes include the ISL91301A and ISL91301B models from the same product family. Verify pinout and configuration flexibility differences before substitution, as these variants may offer different output stage allocations or feature sets compared to the ISL91302B.

Voltage Regulators - DC DC Switching Regulators FAQ

How does the ISL91302B handle transient loads?

It utilizes proprietary R5 modulator technology to deliver highly robust power solutions capable of ultra-fast transient response, supporting 50A/μs per phase transients with less than 150μF nominal output capacitance.

What communication interfaces are supported for configuration?

The device supports both I2C and SPI interfaces, allowing for programmable PWM frequency, output voltage settings, and telemetry data access via an integrated ADC.