BD49L54G-TL

Overview

The BD49L54G-TL is a processor supervisor circuit manufactured by ROHM Semiconductor, designed for monitoring single voltage inputs. It features a fixed detection threshold of 5.4 V with an accuracy of ±1%. The device utilizes a CMOS output type and operates within a supply voltage range up to 10 V. Key electrical parameters include a reset delay time of 100 µs and a typical operating current of 900 nA. It supports a maximum power dissipation of 700 mW and functions across a temperature range from -40 °C to +105 °C. The component is housed in a compact SSOP-3 package.

Feature Summary

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

Applications

• Processor supervision in embedded systems
• Voltage monitoring for microcontroller units
• Power management circuits requiring precise threshold detection

Procurement Notes

This component is officially listed as discontinued or end-of-life by the manufacturer. Availability is restricted, and distributors may indicate non-stock status. Verify current lifecycle status and last-time-buy options through authorized channels before design finalization. Ensure compliance with RoHS standards and check moisture sensitivity levels for storage and handling requirements.

Selection Notes

Select this part when a fixed 5.4 V threshold is required for system supervision. The CMOS output suits applications needing active-low signaling without external pull-ups. Consider the low quiescent current for battery-operated designs. Verify that the SSOP-3 footprint fits the PCB layout constraints and that the operating temperature range meets environmental specifications.

Part Context

The BD49L54G-TL belongs to the BD49 series of voltage detector ICs from ROHM. This family offers various fixed detection voltages ranging from 2.3 V to 6.0 V in 0.1 V increments. The series is characterized by high accuracy and low current consumption, making it suitable for portable and industrial electronics requiring reliable power monitoring.

Replacement Considerations

The BD5250G-1 is listed as a similar specification replacement option. Note that the BD5250G-1 has a different detection voltage (5.0 V) and open-drain output, requiring circuit adjustment. No other direct pin-to-pin substitutes are confirmed in public documentation.