ISL88731AHRZ-T

The ISL88731A is a highly integrated Lithium-ion battery charger controller, programma

ble over the SMBus system management bus (SMBus)
The ISL88731A 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.

SKU: SLY-IC175 Category: CHIPS

Product Description

DESCRIPTION:

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 10mΩ sense resistors.
The ISL88731A provides 0.5% end-of-charge battery voltage accuracy.
Technical sheet: https://pdf1.alldatasheet.com/datasheet-pdf/view/392712/INTERSIL/ISL88731AHRZ-T.html

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)

Applications:

• Notebook Computers

• Tablet PCs

• Portable Equipment with Rechargeable Batterie

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