BU46L272G-TL

Supervisors Overview

The BU46L272G-TL is a voltage detector IC from the ROHM BU45/BU46 series, designed for monitoring single-input power supplies. It features a CMOS output type and operates within a supply voltage range up to 6 V. The device detects voltages with a threshold of 2.7 V and maintains an accuracy of 1%. It includes a built-in counter timer delay circuit that provides a fixed reset delay time of 200 ms, eliminating the need for external capacitors. The component consumes a quiescent current of 2.8 uA and functions reliably across a temperature range of -40 C to +105 C. It is housed in an SSOP-3 package.

Supervisors Feature Summary

• Built-in counter timer delay circuit removes the requirement for external timing capacitors
• High detection accuracy of 1% ensures precise voltage monitoring
• Low current consumption design supports battery-powered applications
• CMOS output structure allows direct interfacing with digital logic

Supervisors Applications

• Portable electronic devices requiring low standby current
• Battery-operated equipment needing reliable under-voltage detection
• Embedded systems utilizing microcontrollers with specific reset voltage requirements
• Consumer electronics where compact SSOP-3 packaging is preferred

Supervisors Procurement Notes

Verify component authenticity through authorized channels as this part is marked obsolete. Confirm exact ordering suffixes match specifications since variations exist within the series. Check RoHS compliance details via official documentation before integration. Ensure supply chain stability due to discontinuation status. Validate pinout compatibility if replacing existing designs.

Supervisors Selection Notes

Choose this model when a fixed 2.7 V threshold and 200 ms delay are required without external components. Compare against BU46L292G-TL or BU46L342G-TL if different voltage thresholds suit the application better. Consider the BU45 series variants if open-drain outputs are acceptable instead of CMOS. Evaluate power budget constraints given the 2.8 uA operating current.

Supervisors Part Context

This component belongs to the BU45/BU46 series of highly accurate, low-current voltage detectors manufactured by ROHM Semiconductor. These ICs are engineered for simple supervisory roles in portable and industrial electronics. The series shares common architectural features such as internal delay timers and high precision, differing primarily in threshold voltage settings and output configurations.

Supervisors Replacement Considerations

The BD5223G-1 is listed as a similar specification replacement for the BU46L232G variant. Verify electrical compatibility carefully as the substitute uses an open-drain output and adjustable delay rather than fixed CMOS. Package differences between SSOP-3 and SSOP-5 may require layout adjustments.