BM1Z003FJ-E2

Overview

The BM1Z003FJ-E2 is an AC voltage zero-cross detection IC manufactured by ROHM Semiconductor. It operates within a supply voltage range of 10 V to 28 V and draws a typical operating current of 160 uA. The device supports a variable output waveform and features a normal zero-cross delay time. It includes thermal shutdown and under-voltage lock-out (UVLO) protections, with a maximum power dissipation of 830 mW. Designed for surface mount installation in SOP-J7S packages, it functions reliably across temperatures from -40°C to +105°C.

Feature Summary

• Eliminates the need for photocouplers and external components for AC zero-cross timing detection
• Provides modifiable zero-cross delay timing capabilities
• Features open-drain output configuration for flexible interfacing

Applications

• Household appliances requiring high-reliability power applications
• Power supplies aiming to reduce standby power consumption compared to photocoupler control
• Miniaturized electronic designs where component count reduction is critical

Procurement Notes

Verify the specific suffix E2 against the manufacturer's latest datasheet to confirm package dimensions and RoHS compliance status. Ensure the ordering quantity aligns with the standard factory packaging quantity of 2500 units per reel. Confirm that the application environment remains within the specified -40°C to +105°C operating temperature range to maintain performance integrity.

Selection Notes

Select this component when designing AC-powered systems that require precise zero-crossing detection without the latency or degradation associated with optical isolation. It is suitable for replacing traditional photocoupler-based circuits to achieve lower standby power and reduced bill of materials. Verify that the input voltage stays within the 10 V to 28 V window for proper UVLO and operation.

Part Context

This part belongs to the BM1Z series of specialized PMICs focused on AC voltage monitoring. Unlike general-purpose comparators, it is optimized specifically for detecting the zero-crossing point of AC waveforms. The series targets consumer electronics and home appliances where energy efficiency and compact form factors are prioritized over automotive-grade ruggedness.

Replacement Considerations

BM1Z012FJ-E2

FAQ

Does the BM1Z003FJ-E2 require external components for zero-cross detection?

No, the IC eliminates the need for photocouplers and external components typically required for this function.

What protection features are included in the BM1Z003FJ-E2?

The device includes thermal shutdown and VCC under-voltage lock-out (UVLO) functionalities.