BD89630EFJ-E2

Overview

The BD89630EFJ-E2 is a synchronous buck converter from ROHM Semiconductor, designed for efficient voltage regulation in compact electronic systems. It operates with an input voltage range of 2.7 V to 5.5 V and provides a single adjustable output voltage between 1 V and 2.5 V. The device delivers a maximum output current of 2 A with a fixed switching frequency of 1 MHz. Packaged in an HTSOP-J8 format, it supports surface-mount installation and functions within a temperature range of -25°C to +85°C.

Feature Summary

• Integrates a synchronous buck topology with an internal power switch for high efficiency and reduced component count.
• Features a fixed 1 MHz switching frequency to minimize external passive component size while maintaining stable regulation.
• Includes a shutdown function to significantly reduce quiescent current during standby or inactive system states.

Applications

• Portable consumer electronics requiring efficient step-down conversion from single-cell lithium-ion sources
• Embedded systems and microcontroller power supplies needing regulated low-voltage rails
• Industrial control modules operating within standard commercial temperature ranges

Procurement Notes

Verify the specific suffix E2 for environmental compliance status before integration. Confirm the HTSOP-J8 package dimensions against your PCB footprint library. Check the latest datasheet for any updates to thermal resistance values or recommended external component specifications. Ensure design compatibility with the specified input voltage window of 2.7 V to 5.5 V.

Selection Notes

Select this component when a compact, single-output synchronous buck solution is required for inputs up to 5.5 V. It is suitable for applications demanding 2 A output current with minimal external inductance due to the 1 MHz frequency. Consider alternative models if operation below -25°C or above 85°C is necessary, or if higher output currents are required.

Part Context

This part belongs to the BD89630 series of switching regulators manufactured by ROHM Semiconductor. It is categorized under PMIC - Power Management ICs as a synchronous buck converter. The device is distinct from other series members by its specific 2 A current rating and 1 MHz fixed frequency operation within the HTSOP-J8 package.

Replacement Considerations

Publicly confirmed substitute part numbers are not available in the provided documentation. Verify functional equivalence carefully if considering alternatives from other manufacturers, specifically matching the 2.7-5.5 V input range, 2 A output capability, and HTSOP-J8 pinout.