NCP1851FCCT1G - ON Semiconductor

Product Overview

NCP1851: Smallest 1.6A High Innovation Switching Battery Charger

For complete documentation, see the data sheet

Product Description

The NCP1851 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 NCP1851 junction temperature and battery temperature are

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

• 1.6A buck converter with integrated pass devices

• Input current limiting to comply to USB standard

• 500mA boosted supply for USB OTG peripherals

• Dynamic power path with external battery FET

• High accuracy voltage and current regulation

• Input over voltage protection up to +28V

• Reverse leakage protection prevents battery discharge

• Protected USB Transceiver supply switch

• Factory mode

• Battery temperature sensing for safe operation (JEITA)

Applications End Products

• High Efficiency Charging Line-up • Smart Phone

• Handheld Devices

• PDA

• Tablets

Part Electrical Specifications

Product Compliance Status Type Number of

Cells Charged VCC Min (V) VCC Max (V) ID Max (uA) Features Package Type

NCP1851FCCT1G Pb-free

Halide free

NEW Li-Ion/Polymer 1 3.6 28 5 Max. Charge

Current 1.6A Flip-Chip-25