BD5226G-2MTR

Overview

The BD5226G-2MTR is an automotive-grade voltage detector IC from ROHM Semiconductor's Nano Energy series. It features a typical under-voltage detection threshold of 2.6V with ±2.5% precision and operates within a reset active voltage range of 0.8V to 6V. The device utilizes an open-drain output type and includes an adjustable delay timer controlled by an external capacitor, maintaining accuracy within ±30% across the -40°C to 105°C temperature range. Key electrical parameters include a circuit current of 0.23µA (ON) and 0.27µA (OFF), hysteresis of VDET x 0.05, and L-output currents of 1mA (Low Vol) and 2mA (High Vol).

Feature Summary

• Adjustable reset delay time controlled via external capacitor for flexible timing configuration.
• High-precision voltage detection with ±2.5% tolerance and built-in hysteresis.
• Ultra-low power consumption suitable for battery-operated applications.
• Automotive functional safety support compliant with AEC-Q100 Grade 1 standards.

Applications

• Monitoring power supply voltages in automotive electronic control units.
• Resetting microcontrollers or logic circuits during brown-out conditions.
• Battery backup system supervision in vehicle infotainment modules.
• Voltage monitoring for sensors and actuators requiring precise threshold detection.

Procurement Notes

Verify that the specific part number matches the required detection voltage and package variant. Confirm that the design supports external capacitor selection for delay adjustment. Ensure compatibility with automotive functional safety requirements if applicable. Check RoHS compliance status against project specifications. Validate that the open-drain output interface aligns with the target system's input logic levels.

Selection Notes

Select this component when an adjustable delay is required rather than a fixed timing interval. Choose this model over CMOS output variants if open-drain sinking capability is necessary for the application. Consider the low operating current for energy-sensitive designs. Verify that the 2.6V threshold meets the system's undervoltage protection needs. Ensure the SSOP-5 package fits the available PCB footprint constraints.

Part Context

This device belongs to the BD52xx-2M series of delay-free-settable CMOS reset ICs. It complements the BD53xx-2M series which offers CMOS outputs instead of open-drain. The family provides various detection voltages from 0.9V to 5.0V in 0.1V steps. All members share similar low-power characteristics and automotive qualification, differing primarily in detection thresholds and output types.

Replacement Considerations

The BD5226FVE is listed as a similar level replacement with the same pinout but differs in package (VSOF-5 vs SSOP-5) and lacks automotive qualification. The BD52E26G-MTR is another alternative but is marked as not recommended for new designs. Verify package dimensions and thermal characteristics when substituting.