DATA SHORT To request the full datasheet, visit the ISL95538B product page. ISL95538B FN8935 Rev. 5.00 Buck-Boost Narrow VDC Battery Charger for Power Bank Application with Jan 23, 2019 SMBus Interface and USB OTG The ISL95538B is a buck-boost Narrow Output Voltage Features DC (NVDC) charger. The ISL95538B provides the Buck-boost NVDC charger for 1-, 2-, 3-, or 4-cell NVDC charging function, system bus regulation, and Li-ion batteries protection features for tablet, Ultrabook, and notebook Input voltage range 3.2V to 23.4V (no dead zone) platforms. The advanced Renesas R3 Technology provides high light-load efficiency and fast transient System output voltage 3V to 18.304V response. Autonomous charging option (automatic end of In Charging mode, the ISL95538B takes input power charge and recharge) from a wide range of DC power sources (such as Up to 1MHz switching frequency conventional AC/DC charger adapters, USB PD ports, travel adapters) and safely charges battery packs with up Adapter current and battery current monitor to 4-series cell Li-ion batteries. (AMON/BMON) As an NVDC topology charger, the ISL95538B also PROCHOT open-drain output, IMVP compliant regulates the system output to a narrow DC range for Allows trickle charging of depleted batteries stable system bus voltage. The system power can be Ideal diode control in Turbo mode provided from the adapter, battery, or a combination of both. The ISL95538B can operate with only a battery, an Reverse buck, boost, and buck-boost operation from adapter, or both connected. battery The ISL95538B supports reverse buck, boost, or Two-level adapter current limit available buck-boost operation to the input port from 2- to 4-cell Battery Ship mode option batteries. 2 SMBus and auto-increment I C compatible The ISL95538B has serial communication using 2 SMBus/I C that allows programming of many critical 4x4 32 Ld TQFN package parameters to deliver a customized solution. Applications Related Literature Mobile devices with rechargeable batteries For a full list of related documents, visit our website: ISL95538B device page FN8935 Rev. 5.00 Page 1 of 3 Jan 23, 2019ISL95538B OPTIONAL R s1 VSYS VADP Q Q 1 4 L 1 Q Q 3 2 VSYS CSIN CSOP CSIP R ASGATE s2 CSON ADP ACIN ISL95538B ACOK BGATE PROCHOT GND AMON/BMON VBAT VBAT BATGONE OTGPG/CMOUT OTGEN/CMIN REF Figure 1. Typical Application Circuit FN8935 Rev. 5.00 Page 2 of 3 Jan 23, 2019 UGATE1 SCL LGATE1 SDA COMP BOOT1 PROG PHASE1 PHASE2 DCIN BOOT2 VDD LGATE2 VDDP UGATE2