The RT9527J/JH/JA is a low cost single-cell Li-ion battery charger for low charge current applications.
The RT9527J/JH/JA can be powered up from an AC adapter or USB (Universal Serial Bus) port inputs. The RT9527J/JH/JA enters sleep mode when VIN power is removed. The RT9527J/JH/JA optimizes the charging task by using a control algorithm, which includes pre-charge mode, fast-charge mode and constant voltage mode. The charging task is kept in constant voltage mode to hold the battery in a full charge condition. The charge current is adjustable via an external resistor. The internal thermal feedback circuitry regulates the die temperature to optimize the charge rate for all ambient temperatures. The RT9527J/JH/JA features 28V maximum rating voltage for VIN. Other features include undervoltage protection and overvoltage protection for the AC adapter supply.
The RT9527J/JH/JA is available in the WDFN-8L 2x2 package. The recommended junction temperature range spans from -40°C to 125°C, while the ambient temperature range extends from -40°C to 85°C.
Applications
- Cellular Phones
- Digital Cameras
- PDAs and Smart Phone
- Portable Instruments