BD4746G-TR

Overview

The BD4746G-TR is a standard voltage detector manufactured by Rohm Semiconductor, designed for monitoring power supply voltages in electronic circuits. It features an open collector output and operates within a reset active voltage range of 0.85 to 10 V. The typical under-voltage detection threshold is set at 4.6 V with a precision of ±1%. The device draws a circuit current of 1.5 μA when active and 1.6 μA when off. It includes a hysteresis voltage defined as VDET x 0.05 and supports an L output current of 15 mA. The component is housed in a 5-SSOP package and functions across a temperature range of -40°C to 75°C.

Feature Summary

• Provides reliable voltage supervision with an open collector output structure for flexible interfacing.
• Maintains high detection accuracy through a fixed threshold voltage with specified tolerance.
• Operates efficiently with low power consumption during both active and standby states.

Applications

• Monitoring battery voltage levels in portable devices
• Supervising power rails in embedded systems
• Ensuring system stability in industrial control units

Procurement Notes

Verify the specific ordering suffix and packaging configuration against official Rohm documentation before procurement. Confirm that the component meets all required environmental standards and regulatory compliance for the intended application. Check for any end-of-life notices or last-time-buy recommendations associated with this part number to ensure long-term supply availability.

Selection Notes

Select this component when a fixed voltage threshold near 4.6 V is required for system supervision. Consider the open collector output capability if external pull-up resistors are needed for logic level compatibility. Evaluate the operating temperature range and package size constraints to ensure suitability for the target PCB design and environmental conditions.

Part Context

This component belongs to the BD47xx series of voltage detectors from Rohm Semiconductor. It is specifically engineered for applications requiring precise voltage monitoring without complex configuration. The device integrates essential protection features into a compact surface-mount package, making it suitable for space-constrained designs where reliable power management is critical.

Replacement Considerations

The BD5246G-1 is listed as a recommended replacement with the same SSOP5 package. Verify electrical parameter compatibility, particularly regarding output type and operating voltage ranges, before substituting.