BQ24702 多化合物电池充电控制器和系统功率选择器
|
BQ24702 |
| # Series Cells |
Multiple |
| Charge Current(Max)(A) |
>2 |
| Charge Status Outputs |
1 |
| Control Topology |
Switchmode |
| Switching Frequency(kHz) |
350 |
| Primary Charge Termination Method |
Host Controlled |
| Pin/Package |
24TSSOP |
| Vin(Max)(V) |
30 |
| Battery Charge Voltage(V) |
adjustable |
BQ24702 描述
The bq24702/bq24703 is a highly integrated battery charge controller and selector tailored for notebook and sub-notebook PC applications.
The bq24702/bq24703 uses dynamic power management (DPM) to minimize battery charge time by maximizing use of available wall-adapter power. This is achieved by dynamically adjusting the battery charge current based on the total system (adapter) current.
The bq24702/bq24703 uses a fixed frequency, pulse width modulator (PWM) to accurately control battery charge current and voltage. Charge current limits can be programmed from a keyboard controller DAC or by external resistor dividers from the precision 5-V, ±0.6%, externally bypassed voltage reference (VREF), supplied by the bq24702/bq24703
BQ24702 特性
- Dynamic Power Management, DPM Minimizes Battery Charge Time
- Integrated Selector Supports Battery Conditioning and Smart Battery Learn Cycle
- Zero Volt Operation
- Selector Feedback Circuit Ensures Break-Before-Make Transition
- ±0.4% Charge Voltage Accuracy, Suitable for Charging Li-Ion Cells
- ±4% Charge Current Accuracy
- 300-kHz Integrated PWM Controller for High-Efficiency Buck Regulation
- Depleted Battery Detection and Indication to Protect Battery From Over Discharge
- 20-uA Sleep Mode Current for Low Battery Drain
- 24-Pin TSSOP Package and 5 mm × 5 mm QFN package (bq24703 only)
BQ24702 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 |
| BQ24702PW |
ACTIVE |
-40 to 125 |
2.55 | 1ku |
TSSOP (PW) | 24 |
3000 | LARGE T&R |
|
| BQ24702PWG4 |
ACTIVE |
-40 to 125 |
2.55 | 1ku |
TSSOP (PW) | 24 |
3000 | LARGE T&R |
|
| BQ24702PWR |
ACTIVE |
-40 to 125 |
2.10 | 1ku |
TSSOP (PW) | 24 |
150 | TUBE |
|
| BQ24702PWRG4 |
ACTIVE |
-40 to 125 |
2.10 | 1ku |
TSSOP (PW) | 24 |
2000 | LARGE T&R |
|
BQ24702 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 |
| BQ24702PW |
Green (RoHS & no Sb/Br) |
CU NIPDAU |
Level-1-260C-UNLIM |
BQ24702PW |
BQ24702PW |
| BQ24702PWG4 |
Green (RoHS & no Sb/Br) |
CU NIPDAU |
Level-1-260C-UNLIM |
BQ24702PWG4 |
BQ24702PWG4 |
| BQ24702PWR |
Green (RoHS & no Sb/Br) |
CU NIPDAU |
Level-1-260C-UNLIM |
BQ24702PWR |
BQ24702PWR |
| BQ24702PWRG4 |
Green (RoHS & no Sb/Br) |
CU NIPDAU |
Level-1-260C-UNLIM |
BQ24702PWRG4 |
BQ24702PWRG4 |
BQ24702 应用技术支持与电子电路设计开发资源下载
- BQ24702 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)
BQ24702 相关工具