BD48L51G-TL

Overview

The BD48L51G-TL is a voltage detector IC from ROHM Semiconductor, designed for monitoring power supply levels in electronic systems. It features an N-channel open-drain output and operates within a maximum supply voltage of 10 V. The device detects under-voltage conditions with a typical threshold of 5.1 V and maintains high accuracy of ±1%. It consumes low circuit current, typically 0.60 μA at 4.8 V supply, and includes a reset delay timer. The component supports an operating temperature range from -40 °C to 105 °C and is housed in a compact SSOP-3 package.

Feature Summary

• Provides precise voltage detection with ±1% accuracy for reliable system supervision.
• Features an N-channel open-drain output suitable for interfacing with various logic families.
• Designed for low-power applications with minimal circuit current consumption.
• Operates reliably across a wide industrial temperature range.

Applications

• Monitoring power supplies for microcontrollers
• Supervising CPU voltage levels
• DSP system power management

Procurement Notes

Verify the specific suffix TL for tape-and-reel packaging configuration. Confirm that the SSOP-3 pinout matches the target footprint, noting the GND pin rotation if applicable. Check RoHS compliance status against current regulatory requirements. Ensure the lead-free designation aligns with assembly specifications. Validate the active or end-of-life status with the manufacturer before finalizing procurement plans.

Selection Notes

Select this component when a fixed 5.1 V detection threshold is required for single-channel supervision. The open-drain output allows flexible pull-up voltage selection. Consider the low current consumption for battery-operated designs. Verify that the SSOP-3 package dimensions fit the available board space. Ensure the operating temperature range meets the environmental constraints of the application.

Part Context

This part belongs to the BD48xxx series of highly accurate, low-current voltage detectors. The series offers various detection voltages in 0.1 V increments. Devices in this family typically feature N-channel open-drain outputs. The BD48L51G-TL specifically targets applications requiring a 5.1 V threshold. It is part of ROHM's portfolio for general-purpose power monitoring.

Replacement Considerations

BD5250G-1TR is listed as a recommended replacement with similar specifications. Note that the substitute uses an SSOP-5 package instead of SSOP-3. Verify pin compatibility and adjust PCB layout accordingly. Check if the slightly different detection voltage (5.0 V vs 5.1 V) affects system requirements.