BQ77915 器件是一款低功耗电池组保护器,它实现了一整套的电压、电流和温度保护功能以及智能电池平衡算法,无需微控制器 (MCU) 控制。该器件的可堆叠接口可进行简单扩展,支持从 3 节串联到 20 节或更多节数串联的电池应用。保护阈值和延迟均为出厂编程设定,有多种配置可供选用。针对放电和充电采用单独的过热阈值和欠温阈值(分别为 OTD、UTD 和 OTC、UTC),从而提高了灵活性。
| Function | Protection |
| Number of series cells (min) | 3, 4, 5 |
| Number of series cells (max) | 4, 5 |
| Features | Cell balancing, FET drive, Open wire (OW), Over-temperature (OT), Overcurrent during charge (OCC), Overcurrent during discharge (OCD), Overvoltage, Short-circuit Discharge (SCD), Stackable, Under-temperature (UT), Undervoltage |
| Operating current (typ) (µA) | 8 |
| Rating | Catalog |
| Vin (max) (V) | 25 |
| TI functional safety category | Functional Safety-Capable |
| Overvoltage protection | 3.8, 4.2, 4.25, 4.275, 4.3 |
| Operating temperature range (°C) | -40 to 85 |
| Battery overvoltage protection (min) (V) | 3 |
| Battery overvoltage protection (max) (V) | 4.575 |
| TSSOP (PW) | 24 | 49.92 mm² 7.8 x 6.4 |
| — (—) | — | See data sheet |