BD49L37G-TL

Overview

The BD49L37G-TL is a CMOS voltage detector IC from ROHM Semiconductor, designed for monitoring power supply voltages in electronic systems. It features a fixed threshold detection voltage of 3.7V with an accuracy of ±1%. The device operates within a power supply range of 0.95V to 10V and consumes a typical operating current of 900nA. It provides a reset signal with a delay time of 100µs and utilizes an SSOP-3 surface-mount package. The component supports an operating temperature range from -40°C to +105°C.

Feature Summary

• CMOS output type for direct interface with digital logic circuits
• High precision voltage detection with ±1% threshold accuracy
• Ultra-low power consumption suitable for battery-operated applications
• Compact SSOP-3 package design for space-constrained PCB layouts

Applications

• Microcontroller system supervision
• CPU power management monitoring
• DSP circuit voltage oversight
• General-purpose supervisory circuits

Procurement Notes

Verify the specific suffix TL against official ROHM documentation to confirm tape-and-reel packaging specifications. Confirm that the 3.7V threshold aligns with target system requirements. Check RoHS compliance status via the manufacturer datasheet. Ensure the SSOP-3 footprint matches the design layout before procurement.

Selection Notes

Select this component when a fixed 3.7V detection threshold is required with high accuracy. Consider the low standby current for energy efficiency needs. Verify compatibility with the system's maximum supply voltage of 10V. Ensure the absence of manual reset or watchdog functions meets the design simplicity requirements.

Part Context

This part belongs to the BD49 series of standard voltage detectors. It shares architectural similarities with other members like the BD49L38G-TL and BD49L39G-TL, differing primarily in the detection threshold voltage. The series is characterized by CMOS outputs and compact packaging options.

Replacement Considerations

The BD5237G-1 is listed as a similar specification replacement option. Verify pinout compatibility and electrical parameter alignment before substitution.