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| PartNumber | BU4309FVE-TR | BU4309F-TR | BU4309FVE |
| Description | Supervisory Circuits CMOS LOW VOLT DETEC | Supervisory Circuits LOW VOLT DETEC VOLT 1.1V | |
| Manufacturer | ROHM Semiconductor | ROHM Semiconductor | Rohm Semiconductor |
| Product Category | Supervisory Circuits | Supervisory Circuits | PMIC - Supervisors |
| RoHS | Y | Y | - |
| Type | Voltage Detectors | Voltage Detectors | Simple Reset/Power-On Reset |
| Mounting Style | SMD/SMT | SMD/SMT | SMD/SMT |
| Package / Case | VSOF-5 | SOP-4 | - |
| Threshold Voltage | 900 mV | 900 mV | - |
| Number of Inputs Monitored | 1 Input | 1 Input | - |
| Output Type | CMOS | CMOS | - |
| Manual Reset | No Manual Reset | No Manual Reset | - |
| Watchdog Timers | No Watchdog | No Watchdog | - |
| Battery Backup Switching | No Backup | No Backup | - |
| Reset Delay Time | Adjustable | Adjustable | - |
| Supply Voltage Max | 7 V | 7 V | - |
| Minimum Operating Temperature | - 40 C | - 40 C | - |
| Maximum Operating Temperature | + 125 C | + 125 C | - |
| Quiescent Current | 0.3 uA | 0.3 uA | - |
| Accuracy | 1 % | 1 % | - |
| Series | BU42(43)xxFVE | BU42(43)xxF | BU43 |
| Packaging | Reel | Reel | Tape & Reel (TR) |
| Brand | ROHM Semiconductor | ROHM Semiconductor | - |
| Overvoltage Threshold | 0.909 V | 0.909 V | - |
| Undervoltage Threshold | 0.891 V | 0.891 V | - |
| Chip Enable Signals | No Chip Enable | No Chip Enable | - |
| Development Kit | - | - | - |
| Operating Supply Current | 550 nA | 550 nA | - |
| Pd Power Dissipation | 210 mW | 400 mW | - |
| Power Fail Detection | No | No | - |
| Product Type | Supervisory Circuits | Supervisory Circuits | - |
| Factory Pack Quantity | 3000 | 3000 | - |
| Subcategory | PMIC - Power Management ICs | PMIC - Power Management ICs | - |
| Supply Voltage Min | 0.7 V | 0.7 V | - |
| Part # Aliases | BU4309FVE | BU4309F | - |
| Package Case | - | - | VSOF-5 |
| Operating Temperature | - | - | -40°C ~ 125°C (TA) |
| Mounting Type | - | - | Surface Mount |
| Supplier Device Package | - | - | 5-VSOF |
| Output | - | - | Push-Pull, Totem Pole |
| Reset | - | - | Active Low |
| Number of Voltages Monitored | - | - | 1 |
| Reset Timeout | - | - | Adjustable/Selectable |
| Voltage Threshold | - | - | 0.9V |