ISL91107IRTNZ-T

Voltage Regulators - DC DC Switching Regulators Overview

The ISL91107IRTNZ-T is a high-efficiency synchronous buck-boost switching regulator manufactured by Renesas Electronics. It operates within an input voltage range of 1.8 V to 5.5 V and provides an adjustable output voltage up to 5.2 V with a maximum output current of 2 A. The device utilizes a fixed internal switching frequency of 2.5 MHz, enabling the use of compact external components. It is housed in a 15-ball WLCSP package (WLCSP-15) designed for surface-mount installation. The regulator features a low quiescent current of 45 µA and supports operation across a temperature range from -40 °C to +85 °C.

Voltage Regulators - DC DC Switching Regulators Feature Summary

• Synchronous Buck-Boost Topology: Integrates four internal switches to efficiently step down or step up voltage without requiring external Schottky diodes.
• Automatic Mode Transition: Seamlessly transitions between buck, boost, and bypass modes to maintain stable output voltage despite input fluctuations.
• Compact Footprint: Utilizes a small 15-ball WLCSP package to minimize PCB area requirements.
• Low Quiescent Current: Achieves 45 µA standby current to extend battery life in portable applications.

Voltage Regulators - DC DC Switching Regulators Applications

• Portable consumer electronics such as smartphones and tablets
• Battery-powered IoT sensors and devices
• USB-powered peripheral equipment
• Industrial handheld instruments

Voltage Regulators - DC DC Switching Regulators Procurement Notes

Verify the specific suffix 'T' indicates tape-and-reel packaging when ordering. Confirm the WLCSP-15 package type matches your board layout constraints. Ensure compatibility with the 1.8 V to 5.5 V input range for your power source. Check RoHS compliance status if required by your manufacturing standards. Validate thermal performance within the specified operating temperature limits.

Voltage Regulators - DC DC Switching Regulators Selection Notes

Select this component when space is limited due to its WLCSP form factor. Choose this part for applications requiring seamless transition between input voltages above and below the output level. Consider this regulator for designs needing high efficiency across varying load conditions. Verify that the 2 A output current meets the peak load requirements of the target circuit.

Voltage Regulators - DC DC Switching Regulators Part Context

This component belongs to the ISL91107 family of high-efficiency buck-boost regulators. The family includes variants with different packages, such as TQFN and standard WLCSP options. These devices share core architecture but differ in physical footprint and shipping configuration. The series is designed for modern portable electronics requiring efficient power management.

Voltage Regulators - DC DC Switching Regulators Replacement Considerations

ISL91107IIAZ-T: Same electrical specifications but in a different WLCSP variant.

Voltage Regulators - DC DC Switching Regulators FAQ

Does the ISL91107IRTNZ-T require external diodes?

No, it uses a fully synchronous four-switch architecture that eliminates the need for external Schottky diodes.

What is the typical switching frequency?

The device operates at a fixed internal switching frequency of 2.5 MHz.