FAN54110 Series

Battery Charge Controller, Linear, 1 A, for Small Battery and IoT Applications

Catalog

Battery Charge Controller, Linear, 1 A, for Small Battery and IoT Applications

Part	Battery Chemistry	Package / Case	Current - Charging	Supplier Device Package	Operating Temperature [Max]	Operating Temperature [Min]	Number of Cells	Interface	Battery Pack Voltage	Mounting Type	Voltage - Supply (Max) [Max]	Charge Current - Max [Max]	Programmable Features
ON Semiconductor FAN54110UCX	Lithium Ion/Polymer	15-UFBGA WLCSP	Constant - Programmable	15-WLCSP (1.56x1.56)	85 °C	-40 °C	1	I2C	3.3 V	Surface Mount	6 V	1 A	Current

Catalog

Battery Charge Controller, Linear, 1 A, for Small Battery and IoT Applications

Key Features

• Charge Voltage Accuracy: (0.5% at 25°C, 1% from -30 to 85°C)

• Charge Current Regulation Accuracy (+0/-10% )

• 28 V Absolute Maximum Input Voltage

• 1 A Maximum Charge Current

• Programmable through I2C Interface with Fast Mode Compatibility

• Safety Timer with Reset Control

• Weak Input Sources Accommodated by Reducing Charging Current to Maintain Minimum VBUS Voltage

• Low Reverse Leakage to Prevent Battery Drain to VBUS

Description

The FAN54110 is a USB-compatible single-cell, linear Li-Ion battery charger with support for Dead Battery Provision (DBP). The maximum charge current is rated at 1 A and can be programmed from 100 mA to 1 A through the I2C interface, optimizing charging for various battery sizes. Dynamic Input Voltage Control ensures weak power sources can be used to power the FAN54110 without collapsing to an unusable input voltage for charging. Open-drain status pins, STAT and POK_B, provide a status of charging and input power. The STAT pin also notifies the system processor when an I2C interrupt occurs so the processor can take action based on the interrupt. The FAN54110 conforms to the constraints of the Dead Battery Provision within the BC1.2 specification, including a 30-minute timer that cannot exceed 45 minutes.