SMBus Level 2 Battery Charger Evaluation Board
The ISL88731CEVAL2Z evaluation board is used to demonstrate the performance of the ISL88731C SMBus Level 2 battery charger.
The ISL88731C is a highly integrated...
Overview
Description
The ISL88731 is a highly integrated Lithium-ion battery charger controller, programmable over the SMBus system management bus (SMBus). The ISL88731 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 ISL88731 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 10mΩ sense resistors. The ISL88731 provides 0. 5% end-of-charge battery voltage accuracy. The ISL88731 provides a digital output that indicates the presence of the AC adapter as well as an analog output which indicates the adapter current within 4% accuracy. The ISL88731 is available in a small 5mmx5mm 28 Ld Thin (0. 8mm) QFN package. An evaluation kit is available to reduce design time. The ISL88731 is available in Pb-Free packages.
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)
Comparison
Applications
Applications
- Notebook Computers
- Tablet PCs
- Portable Equipment with Rechargeable Batteries
Design & Development
Software & Tools
Boards & Kits
SMBus Level 2 Battery Charger Evaluation Board
The ISL88731EVAL2Z evaluation board is used to demonstrate the performance of the ISL88731 SMBus Level 2 battery charger.
The ISL88731 is a highly integrated battery...
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Models
ECAD Models
Schematic symbols, PCB footprints, and 3D CAD models from SamacSys can be found by clicking on products in the Product Options table. If a symbol or model isn't available, it can be requested directly from the website.
Processing table
| TQFN | Tube | 600 | ||
| TQFN | Reel | 6000 |
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