loading

Switch-Mode Single Cell Li-Ion Battery Charger with USB-OTG

RT9458

Update Alert Share

The RT9458 is a switch-mode single cell Li-Ion/Li-Polymer battery charger for portable applications. It integrates a synchronous PWM controller, power MOSFETs, input current sensing, high accuracy voltage regulation and charge termination circuits. The RT9458 also features USB On-The-Go (OTG).

The RT9458 optimizes the charging task by using a control algorithm to vary the charge rate via different modes, including pre-charge mode, fast charge mode, and constant voltage mode. The key charge parameters can be programmed via the I2C interface. The RT9458 resumes the charge cycle whenever the battery voltage falls below an internal threshold and automatically enters sleep mode when the input power supply is removed.

Other features include under-voltage protection, over-voltage protection, thermal regulation and reverse leakage protection.

The RT9458 is available in the small WL-CSP-20B 2.1x1.87 (BSC) package.

Applications

  • Cellular Telephones
  • Personal Information Appliances
  • MP3 Players
  • Portable Instruments
  • Internet of Things
Datasheet
TitleLast UpdateShareDownload
Switch-Mode Single Cell Li-Ion Battery Charger with USB-OTG2016/12/07
Technical Documents
TitleLast UpdateShareDownload
Power IC Solutions for IoT/Portable/Wearable/Battery-Powered Applications2018/11/15
Switching Battery Chargers2017/10/18
Evaluation Boards
TitleLast UpdateShareDownload
Switch-Mode Single Cell Li-Ion Battery Charger with USB-OTG2018/11/08
Part NumberPackage TypePackage Qty.Free SampleBuy From Authorized Distributor
RT9458WSCWL-CSP2.1x1.87-20(BSC)3000 Request Buy from Distributor
TOP