BU4939G-TR
- Mfr.Part #
- BU4939G-TR
- Manufacturer
- ROHM Semiconductor
- Package / Case
- SC-74A, SOT-753
- Datasheet
- Download
- Description
- IC SUPERVISOR 1 CHANNEL 5SSOP
- Stock
- 9,722
- In Stock :
- 9,722
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- Manufacturer :
- ROHM Semiconductor
- Product Category :
- Supervisors
- Length :
- 2.9mm
- RoHS Status :
- ROHS3 Compliant
- Supply Voltage :
- 2.4V
- Terminal Position :
- Dual
- Min Supply Voltage :
- 700mV
- Undervoltage Threshold :
- 3.861V
- Moisture Sensitivity Level (MSL) :
- 1 (Unlimited)
- Watchdog Timer :
- No
- Published :
- 2009
- Base Part Number :
- BU4939
- Factory Lead Time :
- 20 Weeks
- Mounting Type :
- Surface Mount
- ECCN Code :
- EAR99
- Max Power Dissipation :
- 540mW
- Operating Temperature :
- -40°C~125°C TA
- Output :
- Push-Pull, Totem Pole
- Number of Functions :
- 1
- Reset :
- Active High/Active Low
- Type :
- Simple Reset/Power-On Reset
- Max Supply Voltage :
- 7V
- Packaging :
- Tape and Reel (TR)
- Pin Count :
- 5
- Min Reset Threshold Voltage :
- 3.861V
- Number of Voltages Monitored :
- 1
- Quiescent Current :
- 500nA
- Accuracy :
- 1 %
- Overvoltage Threshold :
- 3.939V
- Number of Terminations :
- 5
- Max Supply Current :
- 1.58μA
- Voltage - Threshold :
- 3.9V
- Number of Channels :
- 1
- Number of Pins :
- 5
- Adjustable Threshold :
- No
- Pbfree Code :
- yes
- Terminal Form :
- Gull wing
- Max Reset Threshold Voltage :
- 3.939V
- Package / Case :
- SC-74A, SOT-753
- Mount :
- Surface Mount
- Operating Supply Current :
- 550nA
- Threshold Voltage :
- +3.9V
- Datasheets
- BU4939G-TR
BU4939G-TR Documents

Supervisors ROHM Semiconductor BU4939G-TR Overview
The BU4939G-TR by ROHM Semiconductor is a state-of-the-art supervisor IC, specifically designed to enhance the reliability and stability of voltage-sensitive applications. This compact component, housed in a 5SSOP package, is essential for systems that require precise monitoring and control of power supply conditions. With its single-channel configuration, the BU4939G-TR offers a tailored solution to safeguard sensitive electronic circuits by detecting and responding to over-voltage and under-voltage conditions, thereby preventing potential damage and ensuring continuous operation.
BU4939G-TR Features
The BU4939G-TR incorporates several key features that make it a reliable choice for critical applications. These include a high-precision voltage monitoring capability, low power consumption, and a robust design that can operate under a wide range of environmental conditions. Its quick response to voltage variations ensures that any anomalies are addressed promptly, minimizing the risk of circuit failure.
BU4939G-TR Applications
- Consumer Electronics: Used in devices like smartphones and tablets to manage battery voltage and prevent overcharging, enhancing device longevity and user safety.
- Automotive Systems: Ensures the reliability of electronic control units (ECUs) by monitoring power supply stability, critical in vehicles for performance and safety.
- Industrial Automation: Applies in automated manufacturing lines to protect sensitive equipment from voltage fluctuations, thereby reducing downtime and maintenance costs.
- Telecommunications Equipment: Integral in telecom infrastructure to oversee power conditions, preventing data loss and system failures in critical communication environments.
- Computing Systems: Helps in maintaining the integrity of power supplies in servers and PCs, crucial for data integrity and overall system reliability.
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