- 制造厂商:AD
- 产品类别:电池管理
- 技术类目:开关电池充电器
- 功能描述:55V、降压-升压型多化学组成电池充电器
- (AD代理渠道,提供当日发货、严格的质量标准,满足您的目标价格)
LTC4020 是一款高电压电源管理器,其可在很宽的电压范围内实现 PowerPath 即时接通型操作和高效率电池充电。一个内置降压-升压型 DC/DC 控制器可在电池和 / 或系统电压高于、低于或等于输入电压的情况下运作。
LTC4020 能针对负载变化、电池充电要求和输入电源限制条件无缝地管理电池和转换器输出之间的功率分配。
LTC4020 电池充电器可提供一种恒定电流 / 恒定电压充电算法 (CC/CV)、恒定电流充电 (CC)、或者运用一种经过优化的 4 步、3 级铅酸电池充电模式进行充电。最大转换器和电池充电电流可由电阻器进行设置。
即使在采用一个完全放电电池的情况下,该 IC 的即时接通型操作亦能确保系统负载电源。其他安全特性包括严重放电电池的预查验以及一个用于提供充电终止和保护功能的集成型定时器。
应用
- 便携式工业和医疗设备
- 太阳能供电型系统
- 军用通信设备
- 12V 至 24V 嵌入式汽车系统
- 宽电压范围:4.5V 至 55V 输入,高达 55V 输出 (60V 绝对最大值)
- 同步降压-升压型 DC/DC 控制器
- 锂离子电池和铅酸电池充电算法
- ±0.5% 浮动电压准确度
- ±5% 充电电流准确度
- 采用严重放电电池时可实现即时接通
- 理想二极管控制器可在输入功率受限时提供低损耗电源通路 (PowerPath)
- 针对高阻抗输入电源和太阳能板峰值功率运作的输入电压调节
- 内置定时器用于提供保护和充电终止
- 具自动复位功能的失效电池检测
- 用于适宜温度充电的 NTC 输入
- 二进制编码集电极开路状态引脚
- 扁平 (仅高 0.75mm) 38 引脚 5mm x 7mm QFN 封装
LTC4020EUHF#PBF,封装:38-Lead QFN (5mm x 7mm w/ EP),包装形式及数量:管装,52,工作温度:-40 to 125C,AD官网报价:6.72(100-499个);5.51(1000+个)
LTC4020EUHF#TRPBF,封装:38-Lead QFN (5mm x 7mm w/ EP),包装形式及数量:卷带,2500,工作温度:-40 to 125C,AD官网报价:6.72(100-499个);5.51(1000+个)
LTC4020IUHF#PBF,封装:38-Lead QFN (5mm x 7mm w/ EP),包装形式及数量:管装,52,工作温度:-40 to 125C,AD官网报价:7.66(100-499个);6.28(1000+个)
LTC4020IUHF#TRPBF,封装:38-Lead QFN (5mm x 7mm w/ EP),包装形式及数量:卷带,2500,工作温度:-40 to 125C,AD官网报价:7.66(100-499个);6.28(1000+个)
DC2044B:LTC4020EUHF | High Voltage Buck-Boost Multi-Chemistry Battery Charger
Demonstration circuit 2044B is a 55V buck-boost multi-chemistry battery charger featuring the LTC4020. The board will accept an input voltage between 15V and 55V. The float voltage of the battery output (BAT) is 25.2V, with 3.3A maximum charge current. The converter output (VOUT) has a voltage range of 21V to 28V, with 3A maximum load current. The LTC4020 contains a high efficiency synchronous buck-boost DC/DC controller and uses a proprietary average current mode architecture.
The LTC4020 battery charger can provide a constant-current/constant-voltage charge algorithm (CC/CV); a four-step, three-stage lead-acid battery-charge profile or constant-current charging (CC). Battery-chemistry type is selected using on-board jumper JP1.
The LTC4020 data sheet gives a complete description of the IC operation and application information. The data sheet must be read in conjunction with the quick start guide.
DC2134B:LTC4020EUHF | High Power Buck-Boost Multi?Chemistry Battery Charger
Demonstration circuit 2134B is a high power buck-boost multi-chemistry battery charger featuring the LTC4020. The board will accept an input voltage between 15V and 55V. The float voltage of the battery output (BAT) is 25.2V, with 6.3A maximum charge current. The converter output (VOUT) has a voltage range of 21V to 28V, with 8A maximum load current. The LTC4020 contains a high efficiency synchronous buck-boost DC/DC controller and uses a proprietary average current mode architecture.
The LTC4020 battery charger can provide a constantcurrent/constant-voltage charge algorithm (CC/CV); a four-step, three-stage lead-acid battery-charge profile or constant-current charging (CC). Battery-chemistry type is selected using onboard jumper JP1.
The LTC4020 data sheet gives a complete description of the IC operation and application information. The data sheet must be read in conjunction with the quick start guide.