The bq2000 is a programmable, monolithic IC for fast-charge management of nickel cadmium (NiCd), nickel metal-hydride (NiMH), or lithium-ion (Li-Ion) batteries in single- or multi-chemistry applications. The bq2000 chooses the proper battery chemistry (either nickel or lithium) and proceeds with the optimal charging and termination algorithms. This process eliminates undesirable, undercharged, or overcharged conditions, and allows accurate and safe termination of fast charge
Depending on the chemistry, the bq2000 provides a number of charge termination criteria:
For safety, the bq2000 inhibits fast charge until the battery voltage and temperature are within user-defined limits. If the battery voltage is below the low-voltage threshold, the bq2000 uses trickle-charge to condition the battery. For NiMH batteries, the bq2000 provides an optional top-off charge to maximize the battery capacity.
The integrated high-speed comparator allows the bq2000 to be the basis for a complete, high-efficiency battery charger circuit for both nickel-based and lithium-based chemistries
| BQ2000 | |
| # Series Cells | Multiple |
| Charge Current(Max)(A) | >2 |
| Charge Status Outputs | 1 |
| Control Topology | Switchmode |
| Switching Frequency(kHz) | 500 |
| Primary Charge Termination Method | PVD, Minimum Current |
| Pin/Package | 8PDIP, 8SOIC, 8TSSOP |
| Vin(Max)(V) | 7 |
| 器件 | 状态 | 温度 (oC) | 价格（美元） | 封装 | 引脚 | 封装数量 | 封装载体 | 丝印标记 |
| BQ2000PN-B5 | ACTIVE | -20 to 70 | 1.50 | 1ku | PDIP (N) | 8 | 50 | TUBE | |
| BQ2000PW | ACTIVE | -20 to 70 | 1.80 | 1ku | TSSOP (PW) | 8 | 150 | TUBE | |
| BQ2000PWG4 | ACTIVE | -20 to 70 | 1.80 | 1ku | TSSOP (PW) | 8 | 150 | TUBE | |
| BQ2000PWR | ACTIVE | -20 to 70 | 1.50 | 1ku | TSSOP (PW) | 8 | 2000 | LARGE T&R | |
| BQ2000PWRG4 | ACTIVE | -20 to 70 | 1.50 | 1ku | TSSOP (PW) | 8 | 2000 | LARGE T&R | |
| BQ2000SN-B5 | ACTIVE | -20 to 70 | 1.80 | 1ku | SOIC (D) | 8 | 75 | TUBE | |
| BQ2000SN-B5G4 | ACTIVE | -20 to 70 | 1.80 | 1ku | SOIC (D) | 8 | 75 | TUBE | |
| BQ2000SN-B5TR | ACTIVE | -20 to 70 | 1.50 | 1ku | SOIC (D) | 8 | 2500 | LARGE T&R | |
| BQ2000SN-B5TRG4 | ACTIVE | -20 to 70 | 1.50 | 1ku | SOIC (D) | 8 | 2500 | LARGE T&R |
| 器件 | 环保计划* | 铅/焊球涂层 | MSL 等级/回流焊峰 | 环保信息与无铅 (Pb-free) | DPPM / MTBF / FIT 率 |
| BQ2000PN-B5 | Pb-Free (RoHS) | CU NIPDAU | N/A for Pkg Type | BQ2000PN-B5 | BQ2000PN-B5 |
| BQ2000PW | Green (RoHS & no Sb/Br) | CU NIPDAU | Level-2-260C-1 YEAR | BQ2000PW | BQ2000PW |
| BQ2000PWG4 | Green (RoHS & no Sb/Br) | CU NIPDAU | Level-2-260C-1 YEAR | BQ2000PWG4 | BQ2000PWG4 |
| BQ2000PWR | Green (RoHS & no Sb/Br) | CU NIPDAU | Level-2-260C-1 YEAR | BQ2000PWR | BQ2000PWR |
| BQ2000PWRG4 | Green (RoHS & no Sb/Br) | CU NIPDAU | Level-2-260C-1 YEAR | BQ2000PWRG4 | BQ2000PWRG4 |
| BQ2000SN-B5 | Green (RoHS & no Sb/Br) | CU NIPDAU | Level-1-260C-UNLIM | BQ2000SN-B5 | BQ2000SN-B5 |
| BQ2000SN-B5G4 | Green (RoHS & no Sb/Br) | CU NIPDAU | Level-1-260C-UNLIM | BQ2000SN-B5G4 | BQ2000SN-B5G4 |
| BQ2000SN-B5TR | Green (RoHS & no Sb/Br) | CU NIPDAU | Level-1-260C-UNLIM | BQ2000SN-B5TR | BQ2000SN-B5TR |
| BQ2000SN-B5TRG4 | Green (RoHS & no Sb/Br) | CU NIPDAU | Level-1-260C-UNLIM | BQ2000SN-B5TRG4 | BQ2000SN-B5TRG4 |
| 名称 | 型号 | 工具/软件类型 |
| 电池充电器的快速搜索选择工具 | BATTERY_CHARGERS_SELECTION_TOOL | 免费评估工具 |
| 温度传感设计软件 | TEMPSENSE-SW | 分析软件 |
| 用于多化合物、开关模式的 BQ2000 评估模块 | DV2000S1 | 开发电路板/EVM |
| 用于电池充电管理 IC 的评估模块 | BQ2000EVM | 开发电路板/EVM |
