BQ24620 用于磷酸锂电池的 28V 同步开关模式充电管理 IC
BQ24620 描述
The bq24620 is highly integrated switch-mode battery charge controller designed specifically for Lithium Phosphate battery. It offers a constant-frequency synchronous PWM controller with high accuracy current and voltage regulation, charge preconditioning, termination, and charge status monitoring.
The bq24620 charges the battery in three phases: preconditioning, constant current, and constant voltage. Charge is terminated when the current reaches a minimum level. An internal charge timer provides a safety backup. The bq24620 automatically restarts the charge cycle if the battery voltage falls below an internal threshold, and enters a low-quiescent current sleep mode when the input voltage falls below the battery voltage
|
BQ24600 |
BQ24610 |
BQ24617 |
BQ24620 |
BQ24630 |
BQ24640 |
| # Series Cells |
1-6 |
1-6 |
1-5 |
1-7 |
1-7 |
1-9 |
| Charge Current(Max)(A) |
10 |
10 |
10 |
10 |
10 |
10 |
| Switching Frequency(kHz) |
1200 |
600 |
600 |
300 |
300 |
600 |
| Primary Charge Termination Method |
Minimum Current |
Minimum Current |
Minimum Current |
Minimum Current |
Minimum Current |
Minimum Current |
| Pin/Package |
16VQFN |
24VQFN |
24VQFN |
16VQFN |
24VQFN |
16VQFN |
| Vin(Max)(V) |
28 |
28 |
24 |
28 |
28 |
28 |
| Battery Charge Voltage(V) |
Stand-alone |
Stand-alone |
Stand-alone |
Stand-alone |
Stand-alone |
Stand-alone |
| Optional Functions |
|
Power Path |
Power Path |
|
Power Path |
Super Capacitor Pack: 2.1V to 26V |
BQ24620 特性
- 300 kHz NMOS-NMOS Synchronous Buck Converter
- Stand-alone Charger Designed Specifically for Lithium Phosphate
- 5V–28V VCC Operating Range, Support 1-7 Battery Cells
- High-Accuracy Voltage and Current Regulation
- ±0.5% Charge Voltage Accuracy
- ±3% Charge Current Accuracy
- Integration
- Internal Loop Compensation
- Internal Soft Start
- Safety
- Input Over-Voltage Protection
- Battery Thermistor Sense Suspend Charge at Hot/Cold Charge Suspend and Automatically ICHARGE/8 at WARM/COOL
- Battery Detection
- Built-in Safety Timer
- Charge Over-Current Protection
- Battery Short Protection
- Battery Over-Voltage Protection
- Thermal Shutdown
- Status Outputs
BQ24620 芯片订购指南
| 器件 |
状态 |
温度 |
价格（美元） |
封装 | 引脚 |
封装数量 | 封装载体 |
丝印标记 |
| BQ24620RVAR |
ACTIVE |
-40 to 85 |
3.75 | 100u |
VQFN (RVA) | 16 |
3000 | LARGE T&R |
OGA |
| BQ24620RVAT |
ACTIVE |
-40 to 85 |
4.35 | 100u |
VQFN (RVA) | 16 |
250 | SMALL T&R |
OGA |
BQ24620 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 |
| BQ24620RVAR |
Green (RoHS & no Sb/Br) |
CU NIPDAU |
Level-2-260C-1 YEAR |
BQ24620RVAR |
BQ24620RVAR |
| BQ24620RVAT |
Green (RoHS & no Sb/Br) |
CU NIPDAU |
Level-2-260C-1 YEAR |
BQ24620RVAT |
BQ24620RVAT |
BQ24620 应用技术支持与电子电路设计开发资源下载
- BQ24620 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
- 照明和显示屏电源选择指南 (PDF 1427 KB)
- QFN Layout Guidelines (PDF 1279 KB)
- 笔记本电脑指南 (Rev. A) (PDF 2774 KB)
- 全面认识开关型电源中的BUCK-BOOST功率级 (Rev. A)
(PDF 2206 KB)
- PowerPADTM Made Easy (PDF 57 KB)
- 标准线性产品交叉参考 (Rev. D)
(PDF 1058 KB)
- 模数规格和性能特性术语表 (Rev. A) (PDF 1993 KB)
- 所选封装材料的热学和电学性质 (PDF 645 KB)
- 高速数据转换 (PDF 1967 KB)
BQ24620 相关工具
| 名称 |
型号 |
公司 |
工具/软件类型 |
| 用于 BQ24620 多节同步开关模式充电器的评估模块 |
BQ24620EVM |
Texas Instruments |
开发电路板/EVM |
| BQ24620 评估模块 |
BQ24620EVM-337 |
Texas Instruments |
开发电路板/EVM |