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| Part Number | MP2661GC-0000-Z | MP2661GC-0000-P | MP2661GC-XXXX-P | MP2661GC-XXXX-Z |
| Manufacturer | Monolithic Power Systems Inc. | Monolithic Power Systems Inc. | Monolithic Power Systems Inc. | Monolithic Power Systems Inc. |
| Series | MP | - | - | - |
| Package/Case | 9-WFBGA, WLCSP | 9-WFBGA, WLCSP | 9-WFBGA, WLCSP | 9-WFBGA, WLCSP |
| Packaging | Tape & Reel (TR) | Tape & Reel (TR) | Tape & Reel (TR) | Tape & Reel (TR) |
| Product Status | Active | Active | Active | Active |
| Battery Chemistry | Lithium Ion/Polymer | Lithium Ion/Polymer | Lithium Ion/Polymer | Lithium Ion/Polymer |
| Number of Cells | 1 | 1 | 1 | 1 |
| Current - Charging | Constant - Programmable | Constant - Programmable | Constant - Programmable | Constant - Programmable |
| Programmable Features | Current, Timer, Voltage | Current, Timer, Voltage | Timer | Timer |
| Fault Protection | Over Current, Over Temperature, Short Circuit | Over Current, Over Temperature, Short Circuit | Over Temperature, Short Circuit | Over Temperature, Short Circuit |
| Charge Current - Max | 455mA | 500mA | 455mA | 455mA |
| Battery Pack Voltage | 4.545V (Max) | 4.545V (Max) | 4.2V | 4.2V |
| Voltage - Supply (Max) | 13V | 13V | 6V | 6V |
| Interface | I2C | I2C | I2C | I2C |
| Operating Temperature | -40°C ~ 125°C (TJ) | -40°C ~ 125°C (TJ) | - | - |
| Grade | - | - | - | - |
| Qualification | - | - | - | - |
| Mounting Type | Surface Mount | Surface Mount | Surface Mount | Surface Mount |
| Supplier Device Package | 9-WLCSP (1.55x1.55) | 9-WLCSP (1.55x1.55) | 9-WLCSP (1.55x1.55) | 9-WLCSP (1.55x1.55) |
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