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
Request A Quote(RFQ)
- * Fullname:
- * Company:
- * E-Mail:
- Phone:
- Comment:
- * Quantity:
- Manufacturer :
- ROHM Semiconductor
- Product Category :
- Supervisors
- Max Power Dissipation :
- 400mW
- Quiescent Current :
- 350nA
- Overvoltage Threshold :
- 2.121V
- Pbfree Code :
- yes
- Length :
- 2mm
- Reset :
- Active High/Active Low
- Operating Temperature :
- -40°C~125°C TA
- Max Reset Threshold Voltage :
- 2.121V
- Terminal Position :
- Dual
- RoHS Status :
- ROHS3 Compliant
- Number of Channels :
- 1
- Mounting Type :
- Surface Mount
- Packaging :
- Tape and Reel (TR)
- Mount :
- Surface Mount
- Output :
- Open Drain or Open Collector
- Accuracy :
- 1 %
- Number of Terminations :
- 4
- Moisture Sensitivity Level (MSL) :
- 1 (Unlimited)
- Number of Functions :
- 1
- Type :
- Simple Reset/Power-On Reset
- Base Part Number :
- BU48*
- Lead Free :
- Lead Free
- Operating Supply Current :
- 550nA
- Power Supplies :
- 2.5/5V
- Voltage - Threshold :
- 2.1V
- Supply Voltage :
- 2.4V
- Threshold Voltage :
- +2.1V
- Max Supply Current :
- 1.05μA
- Factory Lead Time :
- 7 Weeks
- Terminal Form :
- Gull wing
- Package / Case :
- 4-TSOP (0.049, 1.25mm Width)
- Undervoltage Threshold :
- 2.079V
- Number of Voltages Monitored :
- 1
- Number of Pins :
- 4
- Min Supply Voltage :
- 700mV
- Watchdog Timer :
- No
- Max Supply Voltage :
- 7V
- Pin Count :
- 4
- Adjustable Threshold :
- No
- ECCN Code :
- EAR99
- Published :
- 2009
- Min Reset Threshold Voltage :
- 2.079V
- 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.
You may place an order without registering to Chip IC. We strongly recommend that you log in before purchasing as you can track your order at any time.
RFQ (Request for Quotations)It is recommended to send RFQ to get the latest prices and stock availability about the part.Our sales will reply to your inquiry within 24 hours.
Payment MethodFor your convenience, we accept multiple payment methods in USD, Such as:PayPal, Credit Card, and wire transfer.
IMPORTANT NOTICEYou may place an order without registering to 1. You'll receive an order confirmations by e-mail soon . (Please remember to check the spam box if you didn't hear from us). 2. Since stock availability and prices may change at any time, the sales will reconfirm the order details and update you at soonest time.
Most of our products are shipped via FEDEX,DHL,UPS and SF EXPRESS...
Shipping CostShipping Cost starts at $40, but some countries will exceed $40. For example (South Africa, Brazil, India, Pakistan, Israel, etc.).If customer have shipping account, we can make shipment under customer’s shipping account with freight collect directly.
The basic freight (for package ≤0.5 KG ) depends on the time zones and countries
Once the goods are shipped, estimated delivery time depends on the shipping methods you chose. You can track it by the tracking no.
















