BM1Z101FJ-E2

Overview

The BM1Z101FJ-E2 is a zero-cross detection IC designed to monitor AC voltage timing and DC voltage after diode rectification. It integrates functions previously requiring external optocouplers, supporting both standard and double rectification modes. The device features a 600V high-voltage monitor, n-channel open-drain output, and operates within a -40°C to +105°C range. Key electrical parameters include a standby current of 50 µA, operating current of 160 µA, input voltage range of 10 V to 28 V, and a maximum switching frequency of 0.065 kHz. It utilizes SOP-J11 packaging.

Feature Summary

• Eliminates the need for photocouplers by integrating zero-cross detection directly into the IC.
• Supports both normal and double rectification configurations through a dedicated system architecture.
• Provides 600V high-voltage monitoring capability with under-voltage lockout protection.

Applications

• Household appliances
• Small power supplies
• AC-DC converter circuits

Procurement Notes

Verify the specific suffix E2 against the manufacturer's latest documentation to confirm package type and RoHS compliance status. Ensure the ordering part number matches the required SOP-J11 configuration. Cross-reference the datasheet revision date to validate thermal shutdown and UVLO specifications before finalizing procurement orders.

Selection Notes

Select this component when designing compact AC-DC converters that require reduced bill-of-materials by removing external isolation components. It is suitable for applications needing precise zero-cross timing without the latency associated with optical isolators. Consider the 600V rating for direct connection to rectified lines in low-power consumer electronics.

Part Context

This IC belongs to ROHM Semiconductor's specialized power management family focused on simplifying AC-DC control architectures. It replaces traditional discrete solutions involving optocouplers and resistors, offering a more reliable and space-efficient alternative for consumer electronic power stages.

Replacement Considerations

Public confirmed substitute part numbers are not available in the provided documentation. Verify compatibility with existing PCB footprints if considering alternatives from other manufacturers.