BD45E242G-MTR

Overview

The BD45E242G-MTR is a fixed-delay voltage detector IC from Rohm Semiconductor, designed for automotive applications. It features a typical detection threshold of 2.4V with ±1% precision. The device provides an open-drain output that activates low when the monitored voltage falls below the threshold. It includes a manual reset function and a fixed delay timer of 200ms. Operating within a supply voltage range of 0.95V to 10V, it consumes 800µA in the ON state and 850µA in the OFF state at Vdet=4.8V. The component is housed in a 5-SSOP package and operates between -40°C and +105°C.

Feature Summary

• Built-in fixed delay timer eliminates the need for external capacitors
• Supports manual reset functionality for system control
• High accuracy voltage detection with ±1% precision
• Developed for automotive use with functional safety support

Applications

• Automotive electronic system supervision
• Voltage monitoring for microcontrollers
• Power management circuit protection

Procurement Notes

Verify the specific suffix G-MTR against the official datasheet to confirm package type and tape-and-reel configuration. Confirm RoHS compliance status and AEC-Q100 qualification requirements for your target application environment. Check for end-of-life notices or obsolescence warnings directly from the manufacturer before finalizing procurement plans.

Selection Notes

Select this component when a fixed 200ms delay is required without external timing components. The open-drain output suits systems needing pull-up resistor flexibility. Ensure the 2.4V threshold aligns with the monitored rail. Verify that the 800µA current consumption fits the power budget constraints of the design.

Part Context

This part belongs to the BD45Exxxx-M series of CMOS voltage detectors. These ICs are characterized by high accuracy and low current consumption. The series integrates counter timer delay circuits internally, simplifying board layout by removing external delay-setting capacitors. They are widely used in automotive electronics requiring reliable voltage supervision.

Replacement Considerations

BD45E242G-M is a parameter-equivalent alternative from Rohm Semiconductor.