BD49L30G-TL

Overview

The BD49L30G-TL is a standard CMOS voltage detector IC from ROHM Semiconductor, designed for monitoring single-input supply voltages. It features a detection threshold of 3.0V with ±1% accuracy and a reset delay timer of 100 µs. The device operates within a supply voltage range of 0.95V to 10V and consumes ultra-low current (typical 900 nA). It provides an active-low CMOS output and functions reliably across an industrial temperature range of -40°C to +105°C.

Feature Summary

• CMOS output interface providing active-low signal
• High-precision voltage detection with ±1% tolerance
• Ultra-low power consumption suitable for battery applications
• Integrated reset delay timer for stable system initialization

Applications

• Processor supervisor circuits
• Battery-powered portable devices
• General-purpose voltage monitoring in embedded systems

Procurement Notes

Verify component authenticity through authorized distributors or official manufacturer channels. Confirm the specific suffix TL indicates tape-and-reel packaging. Check for RoHS compliance documentation and ensure the part matches the SSOP-3 package dimensions. Validate that the 3.0V threshold aligns with your circuit design requirements before procurement.

Selection Notes

Select this component when a precise 3.0V threshold is required with minimal quiescent current. The CMOS output simplifies interfacing with digital logic compared to open-drain alternatives. Ensure the 100µs reset delay meets timing constraints for the target microcontroller or FPGA initialization sequence.

Part Context

This part belongs to the BD49xxx series of high-accuracy, low-current voltage detectors. Unlike the BD48xxx series which uses N-channel open-drain outputs, the BD49xxx family utilizes CMOS outputs. The BD49L30G-TL specifically targets the 3.0V detection point within the 2.3V to 6.0V available range.

Replacement Considerations

BD5230G-1TR is listed as a recommended replacement with similar specifications, though it features an SSOP-5 package instead of SSOP-3.