Overview: CN3163 is a single-cell lithium battery charge management chip that can be powered by solar panels. The device includes an internal power transistor, eliminating the need for external current sensing resistors and current limiting diodes. The internal adaptive charging current module automatically adjusts the charging current based on the input power's current output capability. Users do not need to consider worst-case scenarios, maximizing the utilization of the input power's current output capability. This makes it ideal for lithium battery charging applications powered by sources with limited current output, such as solar panels. CN3163 requires minimal external components, making it suitable for portable applications. The thermal modulation circuit controls the chip temperature within a safe range when power consumption is high or the ambient temperature is elevated. The internal constant voltage charging voltage is fixed at 4.2V, but can be adjusted upward via an external resistor. The charging current is set by an external resistor. When the input voltage is cut off, CN3163 automatically enters a low-power sleep mode, with battery current consumption less than 3µA. Other features include input undervoltage lockout, automatic recharge, battery temperature monitoring, and charging status/completion indication. CN3163 is available in a heat-enhanced 8-pin eSOP8 package.

Product Parameters

Main Functions: A single-cell lithium battery charge management chip that can be powered by solar panels

Operating Mode: Linear

Battery Type: Lithium-ion battery

Number of Batteries: 1

Input Voltage: 4.4V-6V

Output Voltage Range: 0V-4.2V

Maximum Charging Current: 1A

Maximum Output Current: 1A

Operating Current: 500uA

Solar Power Supply: Yes

Thermal Modulation: Yes

Package Type: eSOP8

Chip Enable: No

Built-in Power Transistor: Yes

Applications:

l Solar chargers

l Applications that charge using solar panels

l Applications with limited input power current output capability

l Portable devices

l Various chargers

Features:

l The internal integrated charging current adaptive module automatically adjusts the charging current according to the current output capability of the input voltage source

l Lithium battery charging applications that can be powered by voltage sources with limited output current capability, such as solar panels

l Input voltage range: 4.4V to 6V

l On-chip power transistor

l No external current limiting diodes and current sensing resistors are needed

l Constant voltage charging voltage 4.2V, which can also be adjusted upward by an external resistor

l Can be used as a voltage source

l Internal soft-start circuit

l Trickle charging mode is used when the battery voltage is low to activate deeply discharged batteries and reduce power consumption

l Settable continuous constant current charging current up to 1A

l Charging using constant current/constant voltage/constant temperature mode, which maximizes charging current while preventing chip overheating

l Automatically enters low-power sleep mode when the power supply voltage drops

l Dual indicator outputs for charging status and charging completion status

l C/10 charging completion detection

l Automatic recharging

l Battery temperature monitoring function

l Package type eSOP8

l Lead-free product, RoHS compliant, halogen-free