BD49K29G-TL

Overview

The BD49K29G-TL is a processor supervisor IC manufactured by Rohm Semiconductor. It features a detection voltage threshold of 2.9V with an accuracy of 1%. The device operates within a supply voltage range up to 10V and consumes a typical operating current of 900 nA. It provides a single active-low CMOS output with a reset delay time of 100 µs. The component is housed in a compact 3-pin SSOP package and supports an operating temperature range from -40°C to +105°C.

Feature Summary

• CMOS output interface for direct logic compatibility
• High-precision voltage monitoring with 1% accuracy
• Ultra-low power consumption suitable for battery applications

Applications

• Processor reset circuits
• Battery-powered system supervision
• Portable electronic device power management

Procurement Notes

Verify the specific manufacturer datasheet for the BD49K29G-TL to confirm current production status and environmental compliance details. Ensure the selected variant matches the required 2.9V threshold and SSOP-3 package configuration for your design. Cross-reference official Rohm documentation for any updates regarding moisture sensitivity levels or recommended soldering profiles prior to procurement.

Selection Notes

Select this component when a precise 2.9V detection threshold is required for supervising low-voltage systems. The low quiescent current makes it suitable for energy-constrained designs. Verify that the active-low output polarity aligns with the target microcontroller's reset input requirements. Confirm that the 100 µs reset delay meets the timing specifications of the monitored circuit during power-up events.

Part Context

This part belongs to the BD49 series of voltage detector ICs from Rohm Semiconductor. The series offers various fixed detection voltages ranging from 2.3V to 6.0V in 0.1V increments. All devices in this family share similar characteristics, including CMOS outputs, high accuracy, and low current consumption, designed for compact surface-mount applications.

Replacement Considerations

Other members of the BD49KxxG-TL family may serve as substitutes if different detection thresholds are acceptable. Examples include BD49K28G-TL (2.8V) or BD49K30G-TL (3.0V). Verify that the pinout and electrical characteristics remain identical before swapping parts.