Product Introduction

Product parameters

Funtion:Step-up Multi-Chemistry Battery Charger IC With PhotoVoltaic Cell MPPT Function

Opration Mode:Switch

Battery:Lithium-ion,LiFEPO4 and Lead-Acid Battery

Vout Range:0V-30V

Vin Range:4.5V to 32V

Operating Current:825uA

Solar Panel charge:Yes

Chip Temperature Regulation:No


Switching Frequency:330kHz

Chip Enable:Yes

On-chip Power MOSFET:No

General Description:

The CN3306 is PWM mode step-up multi-chemistry battery charger IC. Its input voltage range is from 4.5V to 32V, also can be powered by photovoltaic cell with MPPT function. The CN3306 is ideal for lithium ion battery, LiFePO4 battery and Titanate Battery’s charge management with few external components.

CN3306 adopts constant current(CC) and constant voltage(CV) mode. In constant current mode, charge current is set by an external resistor; In constant voltage mode, the regulation voltage is set by external resistors. In constant charge mode, when charge current falls below 16.6% of constant current, the charge is terminated. In charge termination mode, when battery voltage falls below 95.8% of the regulation voltage in CV mode, a new charge cycle is started again.

Other functions include chip shutdown, battery overvoltage protection, built-in 5V voltage regulator and charge status indication, etc.

CN3306 is available in 16 pin TSSOP package.


l  Blue Tooth Application

l  POS

l  Notebook

l  Portable Power Bank

l  Lithium Ion, LiFePO4 and Titanite Batteries’ Charge Management


l  PWM Step-up Battery Charge Management

l  Input Voltage Range4.5V to 32V

l  Adaptive Charge Current

l  Maximum Power Point Tracking for Photovoltaic Cell

l  Switching Frequency330kHz

l  High Side Current Sense

l  Charge Current Regulation120mV

l  Cycle-by-Cycle Current Limit

l  Internal Slope Compensation

l  Battery Over Voltage Protection

l  Constant Current and Constant Voltage Mode

l  Automatic Recharge

l  Charge and Termination Indication

l  Internal Soft Start

l  Built-in 5V Voltage Regulator

l  Low Shutdown Current

l  Operating Temperature Range
     40 to 85

l  Available in 16 Pin TSSOP Package

l  Lead-free, Rohs Compliant and Halogen-free

Tools and Documents




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