BQ2057 用于具有 AutoCompTM 的一节应用的锂离子低压降线性（4.1V）充电管理 IC
BQ2057 描述
The BENCHMARQ bq2057 series advanced Lithium-Ion (Li-Ion) and Lithium-Polymer (Li-Pol) linear charge-management ICs are designed for cost-sensitive and compact portable electronics. They combine high-accuracy current and voltage regulation, battery conditioning, temperature monitoring, charge termination, charge-status indication, and AutoComp charge-rate compensation in a single 8-pin IC. MSOP, TSSOP, and SOIC package options are offered to fit a wide range of end applications.
The bq2057 continuously measures battery temperature using an external thermistor. For safety, the bq2057 inhibits charge until the battery temperature is within user-defined thresholds. The bq2057 then charges the battery in three phases: conditioning, constant current, and constant voltage
|
BQ2057 |
BQ2057C |
BQ2057T |
BQ2057W |
| # Series Cells |
1 |
1 |
2 |
2 |
| Charge Current(Max)(A) |
>2 |
>2 |
>2 |
>2 |
| Charge Status Outputs |
1 |
1 |
1 |
1 |
| Control Topology |
Linear |
Linear |
Linear |
Linear |
| Primary Charge Termination Method |
Minimum Current |
Minimum Current |
Minimum Current |
Minimum Current |
| Pin/Package |
8MSOP, 8SOIC, 8TSSOP |
8MSOP, 8SOIC, 8TSSOP |
8SOIC, 8TSSOP |
8SOIC, 8TSSOP |
| Vin(Max)(V) |
18 |
18 |
18 |
18 |
| Battery Charge Voltage(V) |
4.1 |
4.2 |
8.2 |
8.4 |
BQ2057 特性
- Ideal for Single (4.1 V or 4.2 V) and Dual-Cell (8.2 V or 8.4 V) Li-Ion or Li-Pol Packs
- Requires Small Number of External Components
- 0.3 V Dropout Voltage for Minimizing Heat Dissipation
- Better Than ±1% Voltage Regulation Accuracy With Preset Voltages
- AutoCompTM Dynamic Compensation of Battery Pack’s Internal Impedance to Reduce Charge Time
- Optional Cell-Temperature Monitoring Before and During Charge
- Integrated Voltage and Current Regulation With Programmable Charge-Current and High-or Low-Side Current Sensing
- Integrated Cell Conditioning for Reviving Deeply Discharged Cells and Minimizing Heat Dissipation During Initial Stage Of Charge
- Charge Status Output for Single or Dual Led or Host Processor Interface
- Automatic Battery-Recharge Feature
- Charge Termination by Minimum Current
- Automatic Low-Power Sleep Mode When VCC Is Removed
- EVMs Available for Quick Evaluation
- Packaging: 8-Pin SOIC, 8-Pin TSSOP, 8-Pin MSOP
BQ2057 芯片订购指南
| 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 |
| BQ2057SN |
ACTIVE |
-20 to 70 |
1.00 | 1ku |
SOIC (D) | 8 |
75 | TUBE |
|
| BQ2057SNG4 |
ACTIVE |
-20 to 70 |
1.00 | 1ku |
SOIC (D) | 8 |
75 | TUBE |
|
| BQ2057SNTR |
ACTIVE |
-20 to 70 |
0.80 | 1ku |
SOIC (D) | 8 |
2500 | LARGE T&R |
|
| BQ2057SNTRG4 |
ACTIVE |
-20 to 70 |
0.80 | 1ku |
SOIC (D) | 8 |
2500 | LARGE T&R |
|
| BQ2057TS |
ACTIVE |
-20 to 70 |
1.00 | 1ku |
TSSOP (PW) | 8 |
150 | TUBE |
|
| BQ2057TSG4 |
ACTIVE |
-20 to 70 |
1.00 | 1ku |
TSSOP (PW) | 8 |
150 | TUBE |
|
| BQ2057TSTR |
ACTIVE |
-20 to 70 |
0.80 | 1ku |
TSSOP (PW) | 8 |
2000 | LARGE T&R |
|
| BQ2057TSTRG4 |
ACTIVE |
-20 to 70 |
0.80 | 1ku |
TSSOP (PW) | 8 |
2000 | LARGE T&R |
|
BQ2057 质量与无铅数据
| 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 |
| BQ2057SN |
Green (RoHS & no Sb/Br) |
CU NIPDAU |
Level-1-260C-UNLIM |
BQ2057SN |
BQ2057SN |
| BQ2057SNG4 |
Green (RoHS & no Sb/Br) |
CU NIPDAU |
Level-1-260C-UNLIM |
BQ2057SNG4 |
BQ2057SNG4 |
| BQ2057SNTR |
Green (RoHS & no Sb/Br) |
CU NIPDAU |
Level-1-260C-UNLIM |
BQ2057SNTR |
BQ2057SNTR |
| BQ2057SNTRG4 |
Green (RoHS & no Sb/Br) |
CU NIPDAU |
Level-1-260C-UNLIM |
BQ2057SNTRG4 |
BQ2057SNTRG4 |
| BQ2057TS |
Green (RoHS & no Sb/Br) |
CU NIPDAU |
Level-2-260C-1 YEAR |
BQ2057TS |
BQ2057TS |
| BQ2057TSG4 |
Green (RoHS & no Sb/Br) |
CU NIPDAU |
Level-2-260C-1 YEAR |
BQ2057TSG4 |
BQ2057TSG4 |
| BQ2057TSTR |
Green (RoHS & no Sb/Br) |
CU NIPDAU |
Level-2-260C-1 YEAR |
BQ2057TSTR |
BQ2057TSTR |
| BQ2057TSTRG4 |
Green (RoHS & no Sb/Br) |
CU NIPDAU |
Level-2-260C-1 YEAR |
BQ2057TSTRG4 |
BQ2057TSTRG4 |
BQ2057 应用技术支持与电子电路设计开发资源下载
- BQ2057 数据资料 dataSheet 下载.PDF
- TI 德州仪器电池管理产品选型与价格 . xls
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- 高速数据转换 (PDF 1967 KB)
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