AST2806 Synchronous Buck Charging Chip
AST2806 Synchronous Buck Charging Chip
Features
-
Input voltage range 4.5V~25V
SMBUS Controlled Synchronous Buck Controller Programmable Switching Frequencies: 615kHz, 750kHz and 885kHz
With 615kHz, 750kHz and 885kHz programmable switching frequencies
SMBUS Control
- Battery Charge Voltage (1.024V - 19.2V)
- Battery Charge Current (128mA - 8.128A)
- Input Current Limit (128mA - 8.064A)
±0.5% battery charging voltage accuracy
±3% battery charging current accuracy
±3% Input Current Limit Accuracy
±3% 20x adapter current or charge current amplifier output accuracy,
Internal charge pump for AC blocking NFETs and BAT NFETs
Integrated loop compensation
Internal soft-start
AC adapter detection and indication
Supports 1,2,3 and 4-cell battery packs
Support for Intel Core Acceleration Technology
Battery learning function and programmable battery depletion thresholds
Cycle-by-cycle peak current limit
Battery overvoltage and short circuit protection
Inductive and MOSFET short circuit protection
Thermal shutdown hysteresis
Package: QFN 3.5 x 3.5 -20
Partial parameters
-
Operating temperature range: -55°C to 125°C
Storage temperature range: -65°C to 150°C
Address：Room 101A, 1/F, Public Industrial Building, 56 Hoi Yuen Road, Kwun Tong, Kowloon, Hong Kong 
Phone：
Vicky Zhao:(+86)189 2464 5428 