CMOS voltage detector with a fixed +4.2V threshold, offering 1% accuracy. This power supply support circuit features active high/low reset, a 4.158V undervoltage threshold, and a 4.242V overvoltage threshold. Operating from -300mV to 7V, it consumes a maximum supply current of 1.58µA and a typical quiescent current of 500nA. Packaged in a 4-pin SOP for surface mounting, it operates between -40°C and 125°C with a maximum power dissipation of 400mW.
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Rohm BU4842F-TR technical specifications.
| Accuracy | 1% |
| Package/Case | SOP |
| Lead Free | Lead Free |
| Max Operating Temperature | 125°C |
| Min Operating Temperature | -40°C |
| Max Power Dissipation | 400mW |
| Max Reset Threshold Voltage | 4.242V |
| Min Reset Threshold Voltage | 4.158V |
| Max Supply Current | 1.58uA |
| Max Supply Voltage | 7V |
| Min Supply Voltage | -300mV |
| Mount | Surface Mount |
| Number of Monitored Inputs | 1 |
| Number of Voltages Monitored | 1 |
| Operating Supply Current | 550nA |
| Overvoltage Threshold | 4.242V |
| Package Quantity | 3000 |
| Packaging | Tape and Reel |
| Power Dissipation | 400mW |
| Quiescent Current | 500nA |
| Radiation Hardening | No |
| Reset | Active High/Active Low |
| RoHS Compliant | Yes |
| Series | BU4842F |
| Threshold Voltage | 4.2V |
| Type | Simple Reset/Power-On Reset, Voltage Detector |
| Undervoltage Threshold | 4.158V |
| Watchdog Timer | No |
| RoHS | Compliant |
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