Description
The ISL88739 is a highly integrated battery charging and power management IC tailored for lithium-ion battery-powered systems, such as laptops. It supports both HPB (Hybrid Power Boost) and NVDC (Narrow VDC) operation, enabling flexible power sharing between the adapter and battery during high load conditions.
Key Features:
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2 to 4 cell Li-ion/Li-poly battery support
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SMBus interface for full control over charge parameters (voltage, current, power limits)
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Hybrid Power Boost (HPB) mode: Allows battery discharge to supplement adapter power for the system
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Narrow VDC (NVDC) mode: Maintains stable system voltage powered by battery or adapter
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Integrated N-channel MOSFET drivers for system, adapter, and battery FETs
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Programmable switching frequency (typically 350 kHz to 1 MHz)
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PROCHOT# output to notify the host controller of thermal or current limit conditions
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Over-voltage, over-current, and thermal protections
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Low quiescent current for better efficiency in low-power modes
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Current sensing for adapter, battery, and system rails
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Packaged in a 32-pin QFN (4 × 4 mm) package
No Return / No Exchange Policy / No Warranty.
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