BU4821F-TR
- Mfr.Part #
- BU4821F-TR
- Manufacturer
- ROHM Semiconductor
- Package / Case
- 4-TSOP (0.049, 1.25mm Width)
- Datasheet
- Download
- Description
- IC SUPERVISOR 1 CHANNEL 4SOP
- Stock
- 1,726
- In Stock :
- 1,726
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- Manufacturer :
- ROHM Semiconductor
- Product Category :
- Supervisors
- Number of Terminations :
- 4
- Supply Voltage :
- 2.4V
- Overvoltage Threshold :
- 2.121V
- Number of Pins :
- 4
- Max Supply Voltage :
- 7V
- Max Power Dissipation :
- 400mW
- Base Part Number :
- BU48*
- Number of Functions :
- 1
- Adjustable Threshold :
- No
- Factory Lead Time :
- 7 Weeks
- Moisture Sensitivity Level (MSL) :
- 1 (Unlimited)
- Number of Voltages Monitored :
- 1
- Min Reset Threshold Voltage :
- 2.079V
- Mount :
- Surface Mount
- Power Supplies :
- 2.5/5V
- Min Supply Voltage :
- 700mV
- Mounting Type :
- Surface Mount
- RoHS Status :
- ROHS3 Compliant
- Type :
- Simple Reset/Power-On Reset
- Number of Channels :
- 1
- Operating Supply Current :
- 550nA
- Watchdog Timer :
- No
- Voltage - Threshold :
- 2.1V
- Length :
- 2mm
- Max Supply Current :
- 1.05μA
- Output :
- Open Drain or Open Collector
- Accuracy :
- 1 %
- Pin Count :
- 4
- Lead Free :
- Lead Free
- Threshold Voltage :
- +2.1V
- Published :
- 2009
- Pbfree Code :
- yes
- Packaging :
- Tape and Reel (TR)
- Undervoltage Threshold :
- 2.079V
- Max Reset Threshold Voltage :
- 2.121V
- Terminal Form :
- Gull wing
- Terminal Position :
- Dual
- Quiescent Current :
- 350nA
- Operating Temperature :
- -40°C~125°C TA
- Reset :
- Active High/Active Low
- Package / Case :
- 4-TSOP (0.049, 1.25mm Width)
- ECCN Code :
- EAR99
- Datasheets
- BU4821F-TR

Supervisors ROHM Semiconductor BU4821F-TR Overview
The ROHM Semiconductor BU4821F-TR is a state-of-the-art voltage supervisor IC designed to ensure stable and reliable system operation through precise voltage monitoring. Ideal for applications requiring stringent voltage thresholds, this compact supervisor IC comes in a 4SOP package, making it perfectly suited for space-constrained environments. The BU4821F-TR is specifically engineered to enhance system safety by preventing unwanted system resets and data loss in the event of power fluctuations or failure. Its precision and reliability make it a prime choice for critical applications across various industries, helping businesses safeguard their electronic investments.
BU4821F-TR Features
The BU4821F-TR supervisor IC incorporates a range of features designed for robust performance and easy integration. This includes a high-precision voltage monitoring system, a minimal power-on reset generator, and a low power consumption design, making it ideal for battery-operated devices. Furthermore, its small form factor and lead-free construction ensure it meets current environmental compliance requirements while providing flexibility in PCB design.
BU4821F-TR Applications
- Consumer Electronics: Utilized in devices such as smartphones and tablets to manage power supply integrity, ensuring device stability and preventing data loss during unexpected power drops.
- Automotive Systems: Essential for monitoring the critical systems in vehicles, including engine control units and infotainment systems, to prevent malfunctions due to voltage variations.
- Industrial Equipment: Deployed in sensitive industrial machinery to provide consistent system monitoring, guaranteeing operational accuracy and safety under variable power conditions.
- Computing Systems: Integrated into servers and personal computers to monitor power supply health, enhancing system reliability and preventing hardware damage during voltage instability.
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