Product Introduction

Product parameters

Funtion：6A, Buck-Boost Li+ Battery Charger IC With Photovoltaic Cell MPPT Function

Opration Mode：Switch

Battery：multi-cell lithium-ion batteries

Battery No.：multi-cell

Vout Range：0V-25

Vin Range：6.5V-30V

Max Charge Current：6A

Operating Current：365uA

Solar Panel charge：YES

Chip Temperature Regulation：YES

Package：QFN-20

Switching Frequency：550kHz

Chip Enable：No

On-chip Power MOSFET：No

General Description:

CN3000 is a buck-boost PWM switch-mode charger IC for multi-cell lithium-ion batteries with few external components in small footprint package.

The CN3000 is specially designed for charging multi-cell lithium ion batteries with trickle charge, constant current and constant voltage mode. In constant voltage mode, the regulation voltage is set with external resistor divider. The constant charging current is set with an external current sense resistor.

When solar panel is used as power supply, CN3000 can automatically adjust charge current to track solar panel’s maximum power point.

Deeply discharged batteries are automatically trickle charged at 25% of the full-scale charge current until the cell voltage exceeds 66.6% of regulation voltage. The charge cycle is terminated once the charge current drops to 16% of full-scale charge current, and a new charge cycle automatically restarts if battery voltage falls below 95.8% of regulation voltage.

Other features include JEITA-compliant battery temperature monitoring, battery over voltage protection, 2 open-drain status indications, etc.

CN3000 is available in 20-pin QFN package.

Applications:

l Energy Storing Application

l Battery Backup

l Industrial and Medical Equipment

l Electric Tools

l Audio/Video Systems

l Standalone Battery Charger

Features:

l Solar Panel MPPT Function

l Standalone Charge Management for multi-cell Lithium-ion Batteries