BM1Z102FJ-E2

Overview

The BM1Z102FJ-E2 is an AC voltage zero-cross detection IC designed for household appliances. It detects AC voltage zero-cross timing and the DC voltage after diode rectification with high precision. The device operates within a supply voltage range of 10 V to 28 V, drawing a typical standby current of 50 uA and an operating current of 160 uA. It features a variable zero-cross delay time and includes thermal shutdown and under-voltage lockout protections. The component is housed in an SOP-J11 package and supports an operating temperature range from -40°C to +105°C.

Feature Summary

• Eliminates the need for photocouplers by integrating AC zero-cross detection functions directly into the IC.
• Provides a 600V high-voltage monitor capability for accurate detection of rectified DC voltage levels.
• Allows modification of the zero-cross delay time to accommodate specific circuit timing requirements.

Applications

• Household Appliances
• AC Voltage Zero-Cross Detection Circuits
• High-Voltage Monitor Applications

Procurement Notes

Verify the exact suffix E2 against the manufacturer's latest datasheet to confirm pinout and electrical specifications. Ensure the SOP-J11 package dimensions match the target PCB footprint. Confirm that the application does not require automotive-grade certification, as this standard product is not recommended for vehicle equipment.

Selection Notes

Select this component when designing power supplies that require precise zero-crossing synchronization without using external optocouplers. It is suitable for applications needing low standby power consumption and integrated high-voltage monitoring capabilities within a compact surface-mount package.

Part Context

This part belongs to ROHM Semiconductor's specialized PMIC lineup focused on AC detection. It serves as a direct replacement for designs previously relying on discrete components or optocouplers for zero-cross sensing, offering reduced bill-of-materials count and improved reliability in consumer electronics power stages.

Replacement Considerations

Public confirmed substitute part numbers are not available in the provided documentation. Verify compatibility with existing designs carefully due to potential differences in delay characteristics and package pinouts.