DATA SHORT To request the full datasheet, visit the ISL88739 product page. ISL88739 FN8839 Rev.1.00 Hybrid Power Boost (HPB) and Narrow VDC (NVDC) Combo Battery Charger Jul 12, 2019 With SMBus Interface The ISL88739 is a highly versatile combo battery charger Features configurable for operating as either a Hybrid Power Boost (HPB) Configurable as an HPB charger or NVDC charger charger or a Narrow VDC (NVDC) charger, supporting 2-, 3-, or 4-cell batteries. Both configurations allow the battery to work with Compliant with Intel PROCHOT requirements the adapter together to supply the system load when it exceeds Adapter current monitor and battery discharging current the adapter capability, referred to as system Turbo mode. HPB monitor charger configuration reverse-boosts battery energy to the system - Uses NFET for all the switches bus to help the adapter provide the system power in Turbo mode. NVDC charger configuration quickly turns on BGATE to enable the - Supports removal of battery during Battery Learn mode battery to help adapter provide the system power in Turbo mode. - Actively controlled inrush current to prevent FET damage The ISL88739 uses N-channel MOSFETs (NFETs) for all the SMBus programmable settings and high accuracy switches to achieve the best performance and lowest BOM cost. Comprehensive protection features include The internal charge pump is capable of turning on all the NFETs - PROCHOT indicator for system low voltage, adapter fast or slow depending on the circumstance or need. The ability to overcurrent, battery overcurrent, or system overheating quickly turn on NFETs prevents system bus voltage drop when the battery is suddenly removed in Turbo mode or in Battery Learn - Hardware-based adapter-current and battery-current mode. limits - Supports sudden removal of battery in system Turbo The ISL88739 provides many protection features including the mode PROCHOT indicator for system low voltage, adapter overcurrent, battery overcurrent or overheating, with an array of SMBus 16 switching frequency options from 350kHz to 1MHz programmable parameters for maximum flexibility. It also Low quiescent current features hardware based adapter current limit and 2 SMBus and auto-increment I C compatible battery-current limit in addition to SMBus programmable limits. Robust Ripple Regulator (R3) modulation scheme provides The ISL88739 provides a high accuracy adapter current monitor, excellent light-load efficiency and fast dynamic response battery current monitor, and system power monitor outputs. To provide maximum flexibility for working with high power and low 32 Ld 4mmx4mm QFN package power systems, it provides several configurable current-sense Pb-free (RoHS compliant) resistor value options to achieve the best trade-off of current sensing accuracy vs power loss. Applications The ISL88739 uses the Renesas Robust Ripple Regulator (R3) Devices with rechargeable 2-, 3- or 4-cell batteries modulation scheme to provide excellent light-load efficiency and fast dynamic response. It is available in a 32 Ld 4mmx4mm QFN Related Literature package. For a full list of related documents, visit our website: ISL88739 device page AFET SFET AFET SFET VADP VADP VSYS VSYS ADAPTER ADAPTER SYSTEM SYSTEM ASGATE CMSRC BFET ASGATE CMSRC Q UGATE 1 Q1 UGATE L L BFET VBAT VBAT PHASE PHASE HPB NVDC CHARGER Q2 CHARGER Q LGATE LGATE 2 PROG PROG BGATE BGATE VBAT VBAT FIGURE 1. HPB CHARGER CONFIGURATION FIGURE 2. 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