BD49L57G-TL

Overview

The BD49L57G-TL is a CMOS voltage detector from the ROHM BD49 series, designed for supervisory circuit applications. It features a fixed threshold voltage of 5.7 V with an accuracy of 1%. The device operates within a supply voltage range up to 10 V and consumes a typical operating current of 900 nA. It provides a reset delay time of 100 us and lacks manual reset, watchdog timer, or chip enable functions. The component is housed in an SSOP-3 package and supports surface mount installation. It functions reliably across a temperature range of -40°C to +105°C.

Feature Summary

• CMOS output type for low power consumption
• High precision threshold detection at 1% accuracy
• Compact SSOP-3 surface mount packaging

Applications

• Portable electronic devices requiring low standby current
• Battery-powered systems needing voltage supervision
• General purpose microprocessor reset circuits

Procurement Notes

Verify component authenticity through authorized distributors as the part is marked as obsolete. Confirm package integrity and moisture sensitivity level handling requirements before assembly. Check for available alternative components from the same manufacturer family if original stock is unavailable.

Selection Notes

Select this component when a fixed 5.7 V threshold is required with minimal quiescent current. The absence of additional features like watchdog timers simplifies design for basic reset applications. Ensure the input voltage does not exceed the 10 V maximum rating during operation.

Part Context

This voltage detector belongs to the BD49 series of supervisory circuits manufactured by ROHM Semiconductor. The series is characterized by ultra-low current consumption and high accuracy, making it suitable for battery-operated equipment. The specific model utilizes a CMOS output structure for efficient interface with digital logic.

Replacement Considerations

BD49K57G-TL

FAQ

Does the BD49L57G-TL include a manual reset function?

No, the component does not feature a manual reset capability.

What is the maximum operating supply voltage?

The maximum supply voltage is 10 V.