BD49K32G-TL

Overview

The BD49K32G-TL is a CMOS voltage detector IC from ROHM Semiconductor, designed for monitoring single-input power supplies. It features a fixed threshold voltage of 3.2V with an accuracy of ±1%. The device operates within a supply voltage range of 2.3V to 10V and draws a typical operating current of 900nA. It provides a CMOS output with a reset delay time of 100µs. The component is housed in a compact SSOP-3 package and supports an extended industrial temperature range from -40°C to +105°C.

Feature Summary

• CMOS output interface for direct logic compatibility
• High detection accuracy of ±1% threshold voltage
• Ultra-low operating current consumption
• Compact three-pin surface mount packaging

Applications

• Portable electronic devices requiring low power supervision
• Battery-powered systems needing precise voltage monitoring
• Industrial control circuits operating in wide temperature ranges
• Embedded systems utilizing CMOS logic families

Procurement Notes

Verify the current lifecycle status as the component may be discontinued or subject to last-time-buy restrictions. Confirm availability through authorized distributors, as stock levels are limited. Ensure compliance with RoHS directives and check moisture sensitivity levels before procurement. Validate that the SSOP-3 package matches the target PCB footprint requirements.

Selection Notes

Select this component when a fixed 3.2V detection threshold is required with high precision. Consider the low quiescent current for battery-sensitive applications. Verify that the CMOS output type aligns with the downstream logic inputs. Ensure the operating temperature range meets the environmental conditions of the final assembly.

Part Context

This part belongs to the BD49Kxx series of voltage detectors, which offers various fixed threshold voltages. The series is characterized by high accuracy and low current consumption. The BD49K32G-TL specifically targets applications needing a 3.2V trip point. It serves as a supervisor for microprocessors and memory devices in consumer and industrial electronics.

Replacement Considerations

BD5232G-1TR is listed as a similar specification replacement. Note that the substitute uses an open-drain output and a different package (SSOP-5/SOT-23-5) compared to the original SSOP-3. Verify electrical compatibility and physical footprint changes before substitution.