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| Part Number | BQ25121AYFPR | BQ25121AYFPT | BQ25121YFPR | BQ25120AYFPR |
|---|---|---|---|---|
| Manufacturer | Texas Instruments | Texas Instruments | Texas Instruments | Texas Instruments |
| Product Status | Active | Active | Not For New Designs | Active |
| Battery Chemistry | Multi-Chemistry | Multi-Chemistry | Lithium Ion | Lithium Ion/Polymer |
| Number of Cells | 1 | 1 | 1 | 1 |
| Current - Charging | Constant | Constant | Constant - Programmable | Constant - Programmable |
| Programmable Features | Current, Timer, Voltage | Current, Timer, Voltage | Current | Current |
| Fault Protection | Over Current, Over Voltage, Short Circuit | Over Current, Over Voltage, Short Circuit | Over Voltage | Over Temperature, Over Voltage, Short Circuit |
| Charge Current - Max | 300mA | 300mA | 300mA | 300mA |
| Battery Pack Voltage | 4.65V | 4.65V | 4.2V | 4.2V |
| Voltage - Supply (Max) | 5.5V | 5.5V | 5.5V | 5.5V |
| Interface | I²C | I²C | I²C | I²C |
| Operating Temperature | -40°C ~ 85°C | -40°C ~ 85°C | -40°C ~ 125°C (TJ) | -40°C ~ 125°C (TJ) |
| Mounting Type | Surface Mount | Surface Mount | Surface Mount | Surface Mount |
| Package / Case | 25-XFBGA, DSBGA | 25-XFBGA, DSBGA | 25-XFBGA, DSBGA | 25-XFBGA, DSBGA |
| Supplier Device Package | 25-DSBGA | 25-DSBGA | 25-DSBGA | 25-DSBGA |
