BU4940F-TR
- Mfr.Part #
- BU4940F-TR
- Manufacturer
- ROHM Semiconductor
- Package / Case
- SC-82
- Datasheet
- Download
- Description
- IC SUPERVISOR 1 CHANNEL 4SOP
- Stock
- 2,939
- In Stock :
- 2,939
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- Manufacturer :
- ROHM Semiconductor
- Product Category :
- Supervisors
- Pin Count :
- 4
- Max Supply Current :
- 1.58μA
- RoHS Status :
- ROHS3 Compliant
- Packaging :
- Tape and Reel (TR)
- ECCN Code :
- EAR99
- Published :
- 2009
- Accuracy :
- 1 %
- Number of Pins :
- 4
- Voltage - Threshold :
- 4V
- Number of Voltages Monitored :
- 1
- Threshold Voltage :
- +4V
- Type :
- Simple Reset/Power-On Reset
- Mounting Type :
- Surface Mount
- Watchdog Timer :
- No
- Undervoltage Threshold :
- 3.96V
- Reset :
- Active High/Active Low
- Number of Functions :
- 1
- Adjustable Threshold :
- No
- Max Power Dissipation :
- 400mW
- Factory Lead Time :
- 7 Weeks
- Terminal Form :
- Gull wing
- Supply Voltage :
- 2.4V
- Mount :
- Surface Mount
- Base Part Number :
- BU4940
- Max Supply Voltage :
- 7V
- Min Supply Voltage :
- 700mV
- Package / Case :
- SC-82
- Output :
- Push-Pull, Totem Pole
- Quiescent Current :
- 500nA
- Min Reset Threshold Voltage :
- 3.96V
- Operating Temperature :
- -40°C~125°C TA
- Operating Supply Current :
- 550nA
- Terminal Position :
- Dual
- Number of Channels :
- 1
- Number of Terminations :
- 4
- Overvoltage Threshold :
- 4.04V
- Moisture Sensitivity Level (MSL) :
- 1 (Unlimited)
- Max Reset Threshold Voltage :
- 4.04V
- Lead Free :
- Lead Free
- Length :
- 2mm
- Power Supplies :
- 2.5/5V
- Pbfree Code :
- yes
- Datasheets
- BU4940F-TR

Supervisors ROHM Semiconductor BU4940F-TR Overview
The BU4940F-TR from ROHM Semiconductor is a highly reliable voltage supervisor IC designed to ensure stable operation in a variety of electronic applications. This compact device, housed in a 4SOP package, offers precise voltage monitoring functionality essential for protecting sensitive microcontrollers and other logic ICs from improper voltages, thus enhancing system reliability. The Supervisors ROHM Semiconductor BU4940F-TR is ideal for applications requiring stringent voltage supervision to avoid data loss and ensure consistent performance and longevity of electronic components.
BU4940F-TR Features
The BU4940F-TR voltage supervisor IC incorporates several key features:
- Single voltage monitoring channel to simplify circuit design.
- Compact 4SOP package suitable for space-constrained applications.
- High-precision voltage detection to prevent system errors.
- Low power consumption for improved energy efficiency.
- Automatic system reset during voltage drop events.
BU4940F-TR Applications
- Consumer Electronics: Ensures stable operation in devices such as smartphones and tablets by monitoring power supply stability.
- Computing Systems: Used in servers and personal computers to prevent data corruption by resetting the system upon detection of unstable power supplies.
- Industrial Equipment: Helps in maintaining system reliability in harsh environments by providing consistent monitoring and protection against voltage fluctuations.
- Automotive Applications: Monitors voltage levels in vehicle electronics to prevent failures due to voltage irregularities, ensuring safer operation and longer lifespan of components.
- Telecommunication Systems: Critical in base stations and networking equipment for maintaining uptime and reducing system resets caused by voltage dips.
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