BD5334G-TR

Overview

The BD5334G-TR is a voltage detector supervisory circuit manufactured by ROHM Semiconductor, designed for monitoring single-input power supply lines. It features a typical under-voltage detection threshold of 3.4 V with a precision of ±1%. The device operates within a reset active voltage range of 0.95 V to 10 V and supports an adjustable delay timer via an external resistor. It utilizes a CMOS output type with a low active state and lacks manual reset or watchdog functionalities. The component is housed in an SSOP-5 surface-mount package and functions reliably across a temperature range of -40°C to +105°C.

Feature Summary

• Incorporates an adjustable delay timer mechanism controlled by an external resistor to manage reset timing sequences.
• Provides precise voltage supervision with a typical detection accuracy of ±1% for reliable system monitoring.
• Features a CMOS output interface that actively drives the signal low during reset conditions.

Applications

• Monitoring power supply rails in embedded systems requiring precise under-voltage detection
• Implementing delayed reset sequences in microcontroller-based circuits using external resistors
• Supervising battery-powered devices where accurate threshold tracking is critical

Procurement Notes

Verify current availability status as this component may be designated as Not Recommended for New Designs (NRND). Confirm that the replacement part BD5234G-1 meets all electrical and pinout requirements before finalizing procurement decisions. Ensure compatibility with existing board layouts due to identical SSOP-5 packaging constraints.

Selection Notes

Select this component when an adjustable delay feature is required for reset timing control. The CMOS output type suits digital logic interfaces directly. Consider the wider operating temperature range up to +105°C compared to some alternatives. Verify that the external resistor value aligns with the desired delay duration specifications provided in the official datasheet.

Part Context

This part belongs to the BD53 series of voltage detectors from ROHM Semiconductor. It is specifically engineered for applications needing programmable reset delays without complex digital interfaces. The SSOP-5 package allows for compact PCB integration in space-constrained designs.

Replacement Considerations

The BD5234G-1 is identified as a recommended replacement with the same pinout and package. Note differences in output type (Open Drain vs. CMOS) and operating voltage ranges when substituting.

FAQ

How is the reset delay time adjusted on the BD5334G-TR?

The reset delay time is adjusted by connecting an external resistor to the specified pin, allowing customization of the delay duration based on application needs.

What is the output state of the BD5334G-TR during a reset condition?

The output is active low, utilizing a CMOS structure to drive the signal low when the monitored voltage falls below the detection threshold.