ISL91301AIIZ-T

Voltage Regulators - DC DC Switching Regulators Overview

The ISL91301AIIZ-T is a quad output single phase programmable Power Management IC (PMIC) from Renesas. It features four buck controllers with reconfigurable power stages, delivering 4A per phase for supply voltages of 2.8V to 5.5V or 3A per phase for 2.5V to 5.5V. The device utilizes a 42-ball WLCSP package measuring 2.570mm x 2.919mm with 0.4mm pitch. Key electrical parameters include ±0.7% system accuracy with remote voltage sensing and a programmable PWM frequency range from 2MHz to 6MHz.

Voltage Regulators - DC DC Switching Regulators Feature Summary

• Integrates four buck controllers capable of seamless reconfiguration to support various multiphase and single-phase topologies for flexible design-in.
• Incorporates proprietary R5 Technology controller providing tight output accuracy, ultra-fast transient response, and seamless DCM/CCM transitions without external compensation.
• Features automatic Diode Emulation and Pulse Skipping modes under light-load conditions to maximize efficiency and extend battery life.
• Includes independent Dynamic Voltage Scaling (DVS) for each output along with comprehensive fault detection including UV, OV, OC, OT, and short-circuit protection.

Voltage Regulators - DC DC Switching Regulators Applications

• Portable devices requiring high output power in small solution sizes
• Systems utilizing highly efficient synchronous buck converters
• Applications needing independent dynamic voltage scaling for multiple rails

Voltage Regulators - DC DC Switching Regulators Procurement Notes

Verify the specific suffix 'IIZ' against official Renesas documentation to confirm package type and temperature grade. Ensure compatibility with the required input voltage range and current specifications for your design. Cross-reference the datasheet revision number to guarantee alignment with the latest technical parameters and pinout definitions before finalizing procurement.

Voltage Regulators - DC DC Switching Regulators Selection Notes

Select this component when a compact quad-output solution is required within a 6x8mm footprint. It is suitable for designs needing up to 4A per phase at standard logic supply voltages. Consider the programmable frequency range if minimizing external passive component size is a priority. Verify that the WLCSP package format fits the manufacturing capabilities of the assembly line.

Voltage Regulators - DC DC Switching Regulators Part Context

This part belongs to the ISL91301 family of programmable PMICs. The ISL91301A variant offers triple outputs with a 2+1+1 phase configuration, whereas the ISL91301B provides four outputs in a single-phase arrangement. Both variants share the same core controller technology and are optimized for high efficiency and small board space in portable electronics.

Voltage Regulators - DC DC Switching Regulators Replacement Considerations

The ISL91301A is a related variant offering triple outputs instead of four. Verify if the additional output channel is necessary for the specific application requirements before substituting.