NCP1852 Series

Switching Battery Charger, 1.8 A, with Overvoltage Protection

Catalog

Switching Battery Charger, 1.8 A, with Overvoltage Protection

Part	Package / Case	Voltage - Supply (Max)	Number of Cells	Charge Current - Max [Max]	Current - Charging	Mounting Type	Battery Pack Voltage	Supplier Device Package [x]	Supplier Device Package [y]	Supplier Device Package	Operating Temperature [Max]	Operating Temperature [Min]	Battery Chemistry	Interface
ON Semiconductor NCP1852AFCCT1G	25-UFBGA FCBGA	7.3 V	1	1.8 A	Constant - Programmable	Surface Mount	4.5 V	2.55	2.2	25-FlipChip	85 °C	-40 °C	Lithium Ion	I2C USB

Catalog

Switching Battery Charger, 1.8 A, with Overvoltage Protection

Key Features

• 1.8 A buck converter with integrated pass devices

• Input current limiting to comply to USB standard

• Automatic charge current for AC adaptor charging

• Input overvoltage protection up to +28 V / -20 V

• Factory mode

• 500 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

• Battery temperature sensing for safe operation (JEITA)

• Safety timers

• Flag output for charge status and interrupts

• IC Control bus up to 3.4 MHz

• Handheld Devices

Description

The NCP1852 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.