SMBus Level 2 Battery Charger
The ISL88731A is a highly integrated Lithium-ion battery charger controller, programmable over the SMBus system management bus (SMBus). The ISL88731A is intended to be used in a smart battery charger (SBC) within a smart battery system (SBS) that throttles the charge power such that the current from the AC-adapter is automatically limited. High efficiency is achieved with a DC/DC synchronous-rectifier buck converter, equipped with diode emulation for enhanced light load efficiency and system bus boosting prevention. The ISL88731A charges one to four Lithium-ion series cells, and delivers up to 8A charge current. Integrated MOSFET drivers and bootstrap diode result in fewer components and smaller implementation area. Low offset current-sense amplifiers provide high accuracy with 10m? sense resistors. The ISL88731A provides 0.5% end-of-charge battery voltage accuracy.
ข้อมูลสินค้า
Brand
Part NB
Model
Chip CH-ISL88731A
Input
Features
0.5% Battery Voltage Accuracy
3% Adapter Current Limit Accuracy
3% Charge Current Accuracy
SMBus 2 Wire Serial Interface
Battery Short Circuit Protection
Fast Response for Pulse-Charging
Fast System-Load Transient Response
Monitor Outputs
- Adapter Current (3% Accuracy)
- AC-Adapter Detection
11-Bit Battery Voltage Setting
6 Bit Charge Current/Adapter Current Setting
8A Maximum Battery Charger Current
11A Maximum Adapter Current
+8V to +28V Adapter Voltage Range
Pb-Free (RoHS compliant)