- support@husseinkey.com
- livechat
http://www.ti.com/general/docs/suppproductinfo.tsp?distId=26&gotoUrl=https%3A%2F%2Fwww.ti.com%2Flit%2Fgpn%2Fbq25638″>View Datasheet
Texas Instruments bq25638 I2C Controlled Battery Charger IC is a highly integrated 5A switch-mode battery charge and system power path management device for single-cell Li-Ion and Li-polymer batteries. The solution is highly integrated with built-in loop compensation, current sensing, input reverse-blocking FET (RBFET, Q1), high-side switching FET (HSFET, Q2), low-side switching FET (LSFET, Q3), and battery FET (BATFET, Q4) between system and battery. It uses NVDC power path management, regulating the system slightly above the battery voltage without dropping below a configurable minimum system voltage. The low-impedance power path reduces battery charging time, optimizes switch-mode operation efficiency, and extends battery life during discharging. The I2C serial interface with the system and charging settings makes bq25638 a truly flexible solution.
The device supports various input sources, including a standard USB host port, a USB charging port, and a USB-compliant high-voltage adapter. It complies with USB 2.0 and USB 3.0 power specifications for voltage regulation and input current. The Input Current Optimizer (ICO) also supports the detection of the maximum power point of the input source without overload. bq25638 has an ILIM pin to set the default input current limit and a TS_BIAS pin for controlled thermistor bias. The device meets USB On-the-Go (OTG) operation power rating specification with a constant current limit of up to 3.2A. The Texas Instruments bq25638 is available in a 30-ball, 2.0mm×2.4mm DSBGA package.
