The ISL95871C is a highly integrated Lithium-ion battery charger controller, programmable over the System Management Bus (SMBus) with internal switching FETs. 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 ISL95871C charges one to four Lithium-ion series cells, and delivers up to 8A charge current. Integrated MOSFETs and bootstrap diode result in fewer components and smaller implementation area. Low offset current-sense amplifiers provide high accuracy with 10mΩ sense resistors. The ISL95871C provides 0.5% battery voltage accuracy.
The ISL95871C also 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.
Key Features
- Internal Synchronous Buck Output Stage Power FETs
- 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 +22V Adapter Voltage Range
- Pb-Free (RoHS Compliant)
Applications
- Notebook Computers
- Tablet PCs
- Portable Equipment with Rechargeable Batteries
Order Information| Part Number | Package Type | Weight(g) | Pins | MSL Rating | Peak Temp (°C) | RoHS Status |
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| ISL95871CHRZ | 50 Ld QFN | 0.11 | 50 | 3 | 260 | RoHS |
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| ISL95871CHRZ-T | 50 Ld QFN T+R | 0.11 | 50 | 3 | 260 | RoHS |
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| ISL95871CEVAL3Z | | | | N/A | | RoHS |
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