BU4921G-TR
- Mfr.Part #
- BU4921G-TR
- Manufacturer
- ROHM Semiconductor
- Package / Case
- SC-74A, SOT-753
- Datasheet
- Download
- Description
- IC VOLT DETECTOR STD 5-SSOP
- Stock
- 2,416
- In Stock :
- 2,416
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- Manufacturer :
- ROHM Semiconductor
- Product Category :
- Supervisors
- Number of Terminations :
- 5
- Terminal Form :
- Gull wing
- Overvoltage Threshold :
- 2.121V
- Mount :
- Surface Mount
- Number of Channels :
- 1
- Length :
- 2.9mm
- Reset :
- Active High/Active Low
- Adjustable Threshold :
- No
- Undervoltage Threshold :
- 2.079V
- Accuracy :
- 1 %
- Supply Voltage :
- 2.4V
- ECCN Code :
- EAR99
- Min Supply Voltage :
- 700mV
- Pbfree Code :
- yes
- Factory Lead Time :
- 20 Weeks
- Min Reset Threshold Voltage :
- 2.079V
- Operating Supply Current :
- 550nA
- Number of Functions :
- 1
- RoHS Status :
- ROHS3 Compliant
- Max Reset Threshold Voltage :
- 2.121V
- Operating Temperature :
- -40°C~125°C TA
- Packaging :
- Tape and Reel (TR)
- Max Supply Voltage :
- 7V
- Package / Case :
- SC-74A, SOT-753
- Voltage - Threshold :
- 2.1V
- Max Power Dissipation :
- 540mW
- Lead Free :
- Lead Free
- Pin Count :
- 5
- Watchdog Timer :
- No
- Number of Voltages Monitored :
- 1
- Published :
- 2009
- Type :
- Simple Reset/Power-On Reset
- Mounting Type :
- Surface Mount
- Moisture Sensitivity Level (MSL) :
- 1 (Unlimited)
- Output :
- Push-Pull, Totem Pole
- Number of Pins :
- 5
- Threshold Voltage :
- +2.1V
- Max Supply Current :
- 1.05μA
- Terminal Position :
- Dual
- Quiescent Current :
- 350nA
- Datasheets
- BU4921G-TR
BU4921G-TR Documents

Supervisors ROHM Semiconductor BU4921G-TR Overview
The BU4921G-TR by ROHM Semiconductor is a precision voltage detector designed for applications requiring accurate monitoring and stable operation. This IC excels in ensuring system reliability and protection by providing timely responses to voltage fluctuations. The compact 5SSOP package allows for seamless integration into space-constrained designs, making it an ideal choice for sophisticated electronic systems. The voltage detector's ability to operate over a wide temperature range ensures adaptability in various operating environments, promoting its use in both industrial and consumer electronic applications. With its commitment to quality and performance, the Supervisors ROHM Semiconductor BU4921G-TR is essential for designers aiming to enhance system integrity and ensure consistent performance.
BU4921G-TR Features
This voltage detector features a precise voltage threshold, low power consumption, and a rapid response time, which are critical for maintaining system stability and performance. The device's built-in hysteresis effect also prevents output chattering caused by noise, thereby enhancing its reliability. Additionally, its operation across a broad temperature range makes it versatile for diverse applications.
BU4921G-TR Applications
- Power Supply Monitoring: Ensures that all connected electronic components receive stable voltages, preventing damage due to voltage spikes or drops.
- System Reset: Automatically initiates system resets in microcontrollers and other digital devices to recover from unstable conditions or errors.
- Portable Devices: Used in mobile phones, portable gaming systems, and other battery-operated devices to monitor battery status and manage power consumption efficiently.
- Automotive Applications: Monitors car battery and power system to provide early warnings of potential system failures, contributing to vehicle reliability and safety.
- Industrial Equipment: Critical in safeguarding sensitive industrial machinery against irregular voltage levels that could lead to operational disruptions.
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