BD4837G-TR

Overview

The BD4837G-TR is a standard CMOS voltage detector IC manufactured by ROHM Semiconductor. It features a single input channel with an open-drain output type and operates within a supply voltage range of 0.95 V to 10 V. The typical under-voltage detection threshold is 3.7 V, with a precision of ±1%. The device offers a reset active state of low and includes no manual reset or watchdog timer functions. It supports a reset delay timer with adjustable delay capabilities. The circuit current is specified at 0.60 μA (on) and 0.85 μA (off) at VS=4.8V. Hysteresis voltage is defined as VS x 0.05 or Vdet x 0.05. The L output current for low voltage is not explicitly quantified in the provided text, but the package is SSOP-5. Operating temperature ranges from -40°C to +125°C.

Feature Summary

• Standard CMOS voltage detection architecture
• Open-drain output configuration
• Adjustable reset delay timer functionality
• Single input monitoring capability

Applications

• General purpose voltage supervision
• Microprocessor reset circuits
• Battery-powered system monitoring

Procurement Notes

Verify component authenticity through authorized distributors. Confirm RoHS compliance status as detailed in official documentation. Check for obsolescence notices, as this part may be restricted for new designs. Ensure packaging specifications match project requirements. Validate electrical parameters against specific application needs before procurement.

Selection Notes

Consider the open-drain output when designing pull-up resistor networks. Evaluate the adjustable reset delay timer against system startup timing requirements. Assess power consumption levels relative to battery life expectations. Verify thermal performance within the specified operating temperature range. Compare hysteresis characteristics to ensure noise immunity meets design criteria.

Part Context

This component belongs to ROHM's standard voltage detector family. It is designed for reliable voltage monitoring in electronic systems. The SSOP-5 package provides a compact solution for surface-mount applications. The device integrates essential features for basic supervisory tasks without complex additional functionalities like watchdog timers.

Replacement Considerations

BD5237G-TR is listed as a similar level replacement with the same package type. Both parts share comparable voltage detection thresholds and output configurations. Verify specific parameter differences such as circuit current and hysteresis values before substitution.