BQ24750A 具有集成系统电源选择器的主机控制的多化合物电池充电器
BQ24750A 描述
The bq24750A is a high-efficiency, synchronous battery charger with integrated compensation and system power selector logic, offering low component count for space-constrained multi-chemistry battery charging applications. Ratiometric charge current and voltage programming allows high regulation accuracies, and can be either hardwired with resistors or programmed by the system power-management microcontroller using a DAC or GPIOs.
The bq24750A charges two, three, or four series Li+ cells, supporting up to 10 A of charge current, and is available in a 28-pin, 5x5-mm QFN package.
The bq24750A controls external switches to prevent battery discharge back to the input, connect the adapter to the system, and to connect the battery to the system using 6-V gate drives for better system efficiency
|
BQ24740 |
BQ24750A |
BQ24751B |
BQ24753 |
BQ24753A |
| # Series Cells |
2-4 |
2-4 |
2-4 |
2-4 |
2-4 |
| Charge Status Outputs |
1 |
1 |
1 |
1 |
1 |
| Control Topology |
Switchmode |
Switchmode |
Switchmode |
Switchmode |
Switchmode |
| Switching Frequency(kHz) |
300 |
300 |
300 |
300 |
300 |
| Primary Charge Termination Method |
Host Controlled |
Host Controlled |
Host Controlled |
Host Controlled |
Host Controlled |
| Pin/Package |
28VQFN |
28VQFN |
28VQFN |
28VQFN |
28VQFN |
BQ24750A 特性
- NMOS-NMOS Synchronous Buck Converter with 300 kHz Frequency and >95% Efficiency
- 30-ns Minimum Driver Dead-time and 99.5% Maximum Effective Duty Cycle
- High-Accuracy Voltage and Current Regulation
- ±0.5% Charge Voltage Accuracy
- ±3% Charge Current Accuracy
- ±3% Adapter Current Accuracy
- ±2% Input Current Sense Amp Accuracy
- Integration
- Automatic System Power Selection From AC/DC Adapter or Battery
- Internal Loop Compensation
- Internal Soft Start
- Safety
- Input Overvoltage Protection (OVP)
- Dynamic Power Management (DPM) with Status Indicator
- Programmable Inrush Adapter Power (ACOP) and Overcurrent (ACOC) Limits
- Reverse-Conduction Protection Input FET
- Battery Thermistor Sense Input (TS) for Charge Qualification
- Supports Two, Three, or Four Li+ Cells
- 5-24 V AC/DC-Adapter Operating Range
- Analog Inputs with Ratiometric Programming via Resistors or DAC/GPIO Host Control
BQ24750A 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 |
| BQ24750ARHDR |
ACTIVE |
-40 to 85 |
2.50 | 1ku |
VQFN (RHD) | 28 |
3000 | LARGE T&R |
|
| BQ24750ARHDT |
ACTIVE |
-40 to 85 |
2.90 | 1ku |
VQFN (RHD) | 28 |
250 | SMALL T&R |
|
BQ24750A 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 |
| BQ24750ARHDR |
Green (RoHS & no Sb/Br) |
CU NIPDAU |
Level-2-260C-1 YEAR |
BQ24750ARHDR |
BQ24750ARHDR |
| BQ24750ARHDT |
Green (RoHS & no Sb/Br) |
CU NIPDAU |
Level-2-260C-1 YEAR |
BQ24750ARHDT |
BQ24750ARHDT |
BQ24750A 应用技术支持与电子电路设计开发资源下载
- BQ24750A 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)
- PowerPAD™ 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)
BQ24750A 相关工具
