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主要特征
应用/用途
Parametric specs for Battery Chargers
Charging VIN (V) (max) | 22 |
Max. ICHG (A) | 2 |
Cell Chemistry | Li-Ion Li-Polymer |
# Lithium Ion Cells | 1 |
Protected VIN (V) (max) | 22 |
Charger (V) | 4 to 4.2 |
Oper. Temp. (°C) | -40 to +85 |
Package/Pins | UMAX/8 |
Budgetary Price (See Notes) | 1.66 |
缩小
简化框图
Technical Docs
支持和培训
采样:
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参量
Parametric specs for Battery Chargers
Charging VIN (V) (max) | 22 |
Max. ICHG (A) | 2 |
Cell Chemistry | Li-Ion Li-Polymer |
# Lithium Ion Cells | 1 |
Protected VIN (V) (max) | 22 |
Charger (V) | 4 to 4.2 |
Oper. Temp. (°C) | -40 to +85 |
Package/Pins | UMAX/8 |
Budgetary Price (See Notes) | 1.66 |
主要特征
- Simple Design Minimizes Heat
- Low Component Count, No Inductor
- Battery-Full Indicator
- 0.75% Accurate Battery Regulation
- 1.5µA (max) Battery Current Drain with Wall Cube Removed
- Restart Charging at 4.0V
- Continuous Overvoltage and Overtemperature Protection
- Safely Precharges Near-Dead Cells
- Automatic Power-Down when Power Source is Removed
- Charges 1 Cell from as Low as 4.5V
- Pin-Compatible Upgrade to MAX1679
应用/用途
- 蜂窝电话
- 消费类音频
- 无绳电话
- 数码相机
- 全球定位系统(GPS)
- 寻呼机
- 掌上电脑、手持终端
- 笔输入掌上电脑、PDA和数字助理
- 智能电池组/充电器
描述
The MAX1879 single-cell lithium-ion (Li+) battery charger utilizes an efficient pulse-charging architecture to minimize power dissipation in portable devices. This architecture combines the efficiency of switch-mode chargers with the simplicity and low cost of linear chargers. This simple device, in conjunction with a current-limited wall cube and a PMOS transistor, allows safe and fast charging of a single Li+ cell.
The MAX1879 initiates charging in one of three ways: battery insertion, charger power-up, or toggling the THERM pin. Key safety features include continuous voltage and temperature monitoring, a preset charger time-out, and an 8mA precharge current mode to charge near-dead cells. Automatic detection of input power removal shuts down the device, minimizing current drain from the battery. An overall system accuracy of 0.75% ensures that the cell capacity is fully utilized without cycle life degradation.
The MAX1879 is offered in a space-saving 8-pin µMAX® package. An evaluation kit (MAX1879EVKIT) is available to help reduce design time.
The MAX1879 initiates charging in one of three ways: battery insertion, charger power-up, or toggling the THERM pin. Key safety features include continuous voltage and temperature monitoring, a preset charger time-out, and an 8mA precharge current mode to charge near-dead cells. Automatic detection of input power removal shuts down the device, minimizing current drain from the battery. An overall system accuracy of 0.75% ensures that the cell capacity is fully utilized without cycle life degradation.
The MAX1879 is offered in a space-saving 8-pin µMAX® package. An evaluation kit (MAX1879EVKIT) is available to help reduce design time.
Technical Docs
支持和培训
采样:
选择上方“样片”按钮将重定向至第三方ADI样片网站。登录后,所选部件将转移到您在此网站上的购物车。如果您之前从未使用过此网站,请创建一个新帐户。有关此样片网站的任何问题,请联系SampleSupport@analog.com。