NCP1855 9 V / 2.5 A, 12 V / 2 A, Fully Integrated Li-Ion Switching Battery Charger with Power Path Management and USB www.onsemi.com On-The-Go Support The NCP1855 is a fully programmable single cell Lithium-ion MARKING switching battery charger optimized for charging from a USB DIAGRAM compliant input supply and AC adaptor power source. The device integrates a synchronous PWM controller, power MOSFETs, and the 1855 25 BUMP entire charge cycle monitoring including safety features under AYWW FLIPCHIP software supervisibon. An optional battery FET can be placed CASE 499BN between the system and the battery in order to isolate and supply the system. The NCP1855 junction temperature is monitored during 1855 = Specific Device Code charge cycle and both current and voltage can be modified accordingly A = Assembly Location 2 Y = Year through I C setting. The charger activity and status are reported WW = Work Week through a dedicated pin to the system. The input pin is protected = PbFree Package against overvoltages. The NCP1855 also provides USB OTG support by boosting the battery voltage as well as providing overvoltage protected power ORDERING INFORMATION supply for USB transceiver. See detailed ordering and shipping information in the package dimensions section on page 25 of this data sheet. Features 2.5 A Buck Converter with Integrated Pass Devices Input Current Limiting to Comply to USB Standard Automatic Charge Current for AC Adaptor Charging High Accuracy Voltage and Current Regulation Input Overvoltage Protection up to +28 V Factory Mode 1000 mA Boosted Supply for USB OTG Peripherals Reverse Leakage Protection Prevents Battery Discharge Protected USB Transceiver Supply Switch Dynamic Power Path with Optional Battery FET Silicon Temperature Supervision for Optimized Charge Cycle Safety Timers Flag Output for Charge Status and Interrupts 2 I C Control Bus up to 3.4 MHz Small Footprint 2.2 x 2.55 mm CSP Package These Devices are PbFree and are RoHS Compliant Typical Applications Smart Phone Handheld Devices Tablets PDAs Semiconductor Components Industries, LLC, 2016 1 Publication Order Number: January, 2016 Rev. 0 NCP1855/DNCP1855 2.2 H R L SNS 33 m X IN SW C C IN OUT C BOOT NCP1855 SYSTEM 1 F 22 F 10 nF CBOOT CAP SENSP C CAP SENSN 4.7 F WEAK VBUS CORE FET D+ C CORE Q (*) BAT D ID 2.2 F BAT GND + TRANS C TRS 0.1 F USB PHY ILIM1 FLAG ILIM2 SCL OTG SDA AGND SPM PGND FTRY * Optional Battery FET. Figure 1. Typical Application Circuit PIN CONNECTIONS 12 3 4 5 A IN IN SPM SDA SCL B CAP CAP OTG ILIM2 FLAG C SW SW AGND ILIM1 FTRY D PGND PGND SENSP SENSN FET E CBOOT TRANS CORE WEAK BAT (Top View) Figure 2. Package Outline CSP www.onsemi.com 2