ISL9307IRTAAJGZ-T7A

Overview

The ISL9307IRTAAJGZ-T7A is an integrated mini Power Management IC (mini-PMIC) designed for low-voltage microprocessor applications. It features two synchronous step-down converters and two low-input LDOs. The buck regulators deliver up to 1500mA each with a 3MHz switching frequency, while the LDOs provide 300mA. Input voltage ranges from 1.5V to 5.5V. Control is via I2C interface using current mode topology. Operating temperature spans -40°C to 85°C in a 16-TQFN package.

Feature Summary

• Integrates dual high-current synchronous buck converters and dual low-dropout regulators into a single compact IC.
• Utilizes a 3MHz switching frequency to minimize external component size and improve transient response.
• Supports digital control and monitoring through an I2C communication interface.
• Designed for efficient power management of multiple voltage rails from a single lithium-ion or polymer source.

Applications

• Powering low-voltage microprocessors
• Battery-powered portable devices
• Multi-rail voltage distribution systems

Procurement Notes

Verify component authenticity and datasheet revisions before integration. Confirm that the specific suffix matches required pinout and thermal characteristics. Check for end-of-life status or alternative recommendations from the manufacturer. Ensure compatibility with existing I2C bus configurations and input voltage constraints.

Selection Notes

Select this component when space-constrained designs require multiple regulated outputs from a single battery source. The high switching frequency allows for smaller inductors and capacitors compared to lower-frequency alternatives. Verify that the 1500mA output current per buck channel meets load requirements and that the 300mA LDO capacity suffices for auxiliary circuits.

Part Context

This part belongs to the ISL9307 family of mini-PMICs from Renesas Electronics. These devices are engineered to simplify power architecture by combining switching and linear regulation technologies. The series targets mobile and embedded applications requiring high efficiency and minimal footprint.

Replacement Considerations

Public confirmed substitute part numbers: ISL9307IRTAAJBZ-T7A, ISL9307IRTAAJLZ-T7A.

FAQ

What is the maximum input voltage for the ISL9307IRTAAJGZ-T7A?

The maximum input voltage is 5.5V, with a minimum operating voltage of 1.5V.

How many output channels does this PMIC provide?

It provides four output channels: two adjustable synchronous buck converters and two fixed-output LDOs.

What control interface is used for configuration?

The device uses an I2C serial interface for digital control and monitoring of all regulators.