Product Overview
NCP1854: Switching Battery Charger, 2.5 A, with Power Path Management
For complete documentation, see the data sheet
Product Description
The NCP1854 is a fully programmable single cell Lithium-ion switching battery charger optimized for charging from a USB compliant
input supply and AC adaptor power source. The device integrates a synchronous PWM controller, power MOSFETs, and the entire
charge cycle monitoring including safety features under software supervision. An optional battery FET can be placed between the
system and the battery in order to isolate and supply the system. The NCP1854 junction temperature is monitored during charge
cycle and both current and voltage can be modified accordingly through I2C setting. The charger activity and status are reported
through a dedicated pin to the system. The input pin is protected against overvoltages.
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
Applications End Products
• Single Cell Li-Ion Battery Charger • Smart Phone
• High Efficiency Charging • Handled device
• Tablet
• PDA
Part Electrical Specifications
Product Compliance Status Type Number of Cells
Charged VCC Min (V) VCC Max (V) ID Max (µA) Package Type
NCP1854FCCT1G Pb-free
Halide free
Active Li-Ion/Polymer 1 4 28 5 Flip-Chip-25
For more information please contact your local sales support at www.onsemi.com
Created on: 8/28/2014
