BD46322G-TR

Overview

The BD46322G-TR is a voltage detector IC from the BD45xxx series by ROHM Semiconductor. It features a fixed under-voltage detection threshold of 3.2V with ±1% precision. The device provides an open-drain output and includes a manual reset function. It operates within a supply voltage range of 0.95V to 10V and has a fixed reset delay timer of 200ms. The component is housed in a 5-pin SSOP package and supports an operating temperature range of -40°C to +105°C.

Feature Summary

• Built-in counter timer eliminates the need for external capacitors for delay time setting
• High accuracy voltage detection with ±1% precision
• Low current consumption suitable for battery-powered applications
• Manual reset capability for system control

Applications

• Portable electronic devices requiring low power monitoring
• Battery-operated equipment needing under-voltage protection
• General-purpose microprocessor reset circuits
• Embedded systems with strict power constraints

Procurement Notes

Verify the specific ordering suffix and package type against the official datasheet before procurement. Confirm the manufacturing status, as this part may be subject to discontinuation or last-time-buy notices. Ensure compatibility with existing board layouts regarding the SSOP-5 footprint and pin configuration. Cross-reference the detection voltage tolerance requirements with application specifications.

Selection Notes

Select this component when a fixed 3.2V detection threshold is required without external timing components. Consider the open-drain output type for interfacing with various logic levels. Evaluate the manual reset feature if system recovery control is necessary. Compare current consumption metrics against other series members if ultra-low power is critical.

Part Context

This part belongs to the BD45xxx series of CMOS voltage detectors. The series offers detection voltages ranging from 2.3V to 4.8V in 0.1V increments. It shares common characteristics such as built-in delay timers and low current consumption with other variants in the family, differing primarily in detection thresholds and output types.

Replacement Considerations

The BD5232G-1 is listed as a similar level replacement with the same SSOP-5 package. Verify that the adjustable delay timer and push-pull output of the alternative are compatible with the original circuit design.