LV71402RA:1.5A, 2-Cell Li-ion Battery DC-DC USB Charger
The LV71402RA is a 1ch DC-DC boost converter which is suitable for charge control usage such as charging 2Cell Li-ion battery (e.g. D-SLR, DVC) from USB port. Since it is corresponding to 3 current modes (500mA/900mA/1.5A) from the port, when it determines that there is no current capability on the port, it will automatically set suppliable current mode. By having a variety of internal protection circuits, inrush current generated by connecting/removing USBs or Li-ion batteries can be controlled - Enables safe charging. LV71402RA also has an internal mode that is not only used as Li-ion battery charger, but also as a VOUT=8.35V Fixed boost converter which will enable set driving without batteries.
技术特性
- 1ch Synchronous boost converter (Internal FET)
- LDO Trickle charge at Low voltage
- 3-mode-compatible USB supply current (500mA/900mA/1.5A)
- USB Supply current capability auto-detection
- Internal Soft start function (Current slope : 10msec)
- Automatic recharging function
(Recharges when VOUT is below 7.8V after judged as fully-charged )
- Switching frequency 1MHz/2MHz Switching function
- Charge/Boost Mode switching function
- LED Pin/CHG_OK Pin for Charging condition check
- Input voltage operation range : 4.0 to 6.0V
- Current at Shutdown < 1µA
- Full-charged voltage : 8.35V±0.5%
- High efficiency charge 93%
- Charging inception Anomaly detection
(2 hours of LDO Trickle charge will set Standby mode)
- I/O over-voltage protection - OVP
- I/O over-current protection - OCP
- Thermal Shutdown
- Thermistor temperature detection
- Pin control/I2C bus control selectable
|
封装图 PACKAGE DIMENSIONS
|
订购信息 Ordering Information
| 产品 |
状况 |
Compliance |
具体说明 |
封装 |
MSL* |
容器 |
预算价格 (1千个数量的单价） |
| 类型 |
外形 |
类型 |
数量 |
| LV71402RA-3E |
Product Preview |
|
1.5A, 2-Cell Li-ion Battery DC-DC USB Charger |
|
|
|
Tray Foam |
1 |
|
| LV71402RA-NE |
Product Preview |
|
1.5A, 2-Cell Li-ion Battery DC-DC USB Charger |
|
|
|
Tape and Reel |
1 |
|
数据资料DataSheet下载
