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Product Detailed Parameters
- Description：IC SUPERVISOR 1 CHANNEL 5SSOP
- Series：-
- Mfr：Rohm Semiconductor
- Package：Tape & Reel (TR),Cut Tape (CT)
- Type：Simple Reset/Power-On Reset
- Number of Voltages Monitored：1
- Voltage - Threshold：4.3V
- Output：Open Drain or Open Collector
- Reset：Active Low
- Reset Timeout：Adjustable/Selectable
- Operating Temperature：-40°C ~ 125°C (TA)
- Mounting Type：Surface Mount
- Package / Case：SC-74A, SOT-753
- Supplier Device Package：5-SSOP
- Grade：-
- Qualification：-
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Overview
The BU4243G-TR is a CMOS voltage detector with an adjustable delay timer, designed for monitoring power supply voltages. It features a typical under-voltage detection threshold of 4.3V with ±1% precision. The device operates within a reset active voltage range of 0.7V to 7V and utilizes an open-drain output type. Circuit current consumption is specified at 0.40μA (on) and 0.55μA (off) at Vdet=4.8V. It is housed in an SSOP-5 package and supports a temperature range from -40°C to +125°C.
Feature Summary
- Adjustable reset delay timer functionality
- Open-drain output configuration
- Low current consumption design
Applications
- Power supply supervision
- Microprocessor reset circuits
- Battery-powered equipment monitoring
Procurement Notes
Verify the specific ordering suffix '-TR' confirms the reel packaging format required for your assembly line. Confirm that the 'Not Recommended for New Designs' status aligns with your product lifecycle requirements. Ensure the SSOP-5 package dimensions match your PCB footprint specifications before finalizing procurement.
Selection Notes
Select this component when an adjustable delay timer is required alongside precise voltage monitoring. The open-drain output allows for flexible interfacing with various logic levels. Consider the low standby current for battery-operated applications. Verify that the 4.3V threshold meets the system's under-voltage protection requirements.
Part Context
This part belongs to the BU42xxG series of voltage detectors manufactured by ROHM Semiconductor. These devices are integrated supervisory circuits designed to monitor single power rails. The series typically offers high accuracy and low power consumption, suitable for portable electronics and industrial control systems requiring reliable reset signals.
Replacement Considerations
The BD5243G-1 is listed as a similar level replacement with the same pinout and package. Verify functional equivalence regarding the adjustable delay timer and output characteristics before substitution.
