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| PartNumber | BQ21040 | BQ21040D | BQ21040DBUR |
| Description | |||
| Manufacturer | TI | TI | - |
| Product Category | PMIC - Battery Chargers | PMIC - Battery Chargers | - |
| Series | - | - | - |
| Packaging | Tape & Reel (TR) Alternate Packaging | Tape & Reel (TR) Alternate Packaging | - |
| Package Case | SOT-23-6 | SOT-23-6 | - |
| Operating Temperature | 0°C ~ 125°C (TJ) | 0°C ~ 125°C (TJ) | - |
| Battery Chemistry | Lithium-Ion/Polymer | Lithium-Ion/Polymer | - |
| Number of Cells | 1 | 1 | - |
| Interface | USB | USB | - |
| Supplier Device Package | SOT-23-6 | SOT-23-6 | - |
| Fault Protection | Over Temperature, Over Voltage, Short Circuit | Over Temperature, Over Voltage, Short Circuit | - |
| Current Charging | Constant - Programmable | Constant - Programmable | - |
| Programmable Features | - | - | - |
| Charge Current Max | 800mA | 800mA | - |
| Battery Pack Voltage | 4.2V | 4.2V | - |
| Voltage Supply Max | 6.45V | 6.45V | - |