LTC4062 具微功率比较器的独立型线性锂离子电池充电器
The LTC®4062 is a full-featured, flexible, standalone linear charger for single-cell Lithium-Ion batteries. It is capable of operating within USB power specifications.
Both programmable time and programmable current based termination schemes are available. Furthermore, the CHRG open-drain status pin can be programmed to indicate the battery charge state according to the needs of the application. A precise low power comparator is available even with no power applied as long as battery voltage is higher than 2.5V. Additional safety features designed to maximize battery lifetime and reliability include the SmartStart charging algorithm.
No external sense resistor or external blocking diode is required for charging due to the internal MOSFET architecture. Internal thermal feedback regulates the charge current to maintain a constant die temperature during high power operation or high ambient temperature conditions. The charge current is programmed with an external resistor. With power applied, the LTC4062 can be put into shutdown mode to reduce the supply current to 20µA and the battery drain current to less than 5µA. Without power applied, the internal low power comparator can work sinking only 10µA from the battery.
Other features include smart recharge, USB C/5 current programming input and undervoltage lockout.
*Protected by U.S. Patents, including 6522118.
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LTC4062 订购信息和价格参考Package Variations and Pricing
| 器件型号 | 封装 | 引脚 | 温度 | 价格 (以 1 ~ 99 片为批量) | 价格 (以 1000 片为批量) * |
| LTC4062EDD | DFN | 10 | E | $2.32 | $1.95 |
| LTC4062EDD#PBF | DFN | 10 | E | $2.32 | $1.95 |
| LTC4062EDD#TR | DFN | 10 | E | $2.05 | |
| LTC4062EDD#TRPBF | DFN | 10 | E | $2.05 |
LTC4062 数据手册及相关资料下载
- 数据手册(英文) : LTC4062 - Standalone linear Li-Ion Battery Charger with Micropower Comparator.PDF
- 可靠性数据 : R402 Reliability Data .PDF
- 产品选型卡 : I2C Battery Gas Gauges.PDF
