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| PartNumber | BU4220FVE-TR | BU4220F-TR | BU4220G |
| Description | Supervisory Circuits LOW VOLT DETECT VOLT 2.2V | Supervisory Circuits LOW VOLT DETECT VOLT 2.2V | |
| Manufacturer | ROHM Semiconductor | ROHM Semiconductor | Rohm Semiconductor |
| Product Category | Supervisory Circuits | Supervisory Circuits | PMIC - Supervisors |
| RoHS | Y | Y | - |
| Type | Voltage Monitors | Voltage Monitors | Simple Reset/Power-On Reset |
| Mounting Style | SMD/SMT | SMD/SMT | SMD/SMT |
| Package / Case | VSOF-5 | SOP-4 | - |
| Threshold Voltage | 2 V | 2 V | 2 V |
| Series | BU42(43)xxFVE | BU42(43)xxF | BU42 |
| Packaging | Reel | Reel | Digi-ReelR Alternate Packaging |
| Brand | ROHM Semiconductor | ROHM Semiconductor | - |
| Product Type | Supervisory Circuits | Supervisory Circuits | - |
| Factory Pack Quantity | 3000 | 3000 | - |
| Subcategory | PMIC - Power Management ICs | PMIC - Power Management ICs | - |
| Part # Aliases | BU4220FVE | BU4220F | - |
| Package Case | - | - | SSOP-5 |
| Operating Temperature | - | - | -40°C ~ 125°C (TA) |
| Mounting Type | - | - | Surface Mount |
| Output Type | - | - | Open Drain |
| Supplier Device Package | - | - | 5-SSOP |
| Output | - | - | Open Drain or Open Collector |
| Reset | - | - | Active Low |
| Accuracy | - | - | 1 % |
| Number of Voltages Monitored | - | - | 1 |
| Reset Timeout | - | - | Adjustable/Selectable |
| Voltage Threshold | - | - | 2V |
| Pd Power Dissipation | - | - | 540 mW |
| Maximum Operating Temperature | - | - | + 125 C |
| Minimum Operating Temperature | - | - | - 40 C |
| Operating Supply Current | - | - | 0.55 uA |
| Battery Backup Switching | - | - | No Backup |
| Supply Voltage Max | - | - | 7 V |
| Supply Voltage Min | - | - | 0.9 V |
| Watchdog Timers | - | - | No Watchdog |
| Number of Inputs Monitored | - | - | 1 Input |
| Manual Reset | - | - | No Manual Reset |
| Reset Delay Time | - | - | Adjustable |