English
 
Product Information
Your Position Product
- Voltage detector IC
- Reset IC
- Li+ Battery Charger IC
- Coin Battery Charger IC
- LA Battery Charger IC
- LiFePO4 Battery Charger IC
- Solar Panel-Powered Charger IC
- NIMH Battery Charger IC
- Li+ Titanate Battery Charger IC
- WLED Driver
- DC-DC Converter
- LDO
- Amplifiers
CN3767
4A,12V Lead-Acid Battery Charger IC With Photovoltaic Cell MPPT Function
Product Profile
    Application Note
General Description
The CN3767 is a PWM switch-mode battery charger controller for 12V lead-acid battery in a small package
using few external components.
The CN3767 is specially designed for charging 12V lead-acid battery with trickle charge, constant current
charge, over-charge and float charge mode.In over-charge and float charge mode, the regulation voltage is
internally set. The constant charge current is programmable with a single sense resistor.
Deeply discharged batteries are automatically trickle charged at 17.5% of the programmed constant charge
current until the cell voltage exceeds 75% of the regulation voltage in over-charge mode. The over-charge
is terminated once the charging current drops to 38% of the constant charge current, then CN3767 will enter
into float charge mode. A new charge cycle automatically restarts if the battery voltage falls below 83.95%
of the over-charge voltage in float-charge mode. CN3767 will automatically enter sleep mode when input
voltage is lower than battery voltage.
Other features include undervoltage lockout and status indication, etc.
CN3767 is available in a space-saving 10-pin SSOP package.
Applications
Lead-Acid Battery Charger Portable Industrial and Medical Equipment
UPS Standalone Battery Chargers
Features
Photovoltaic Cell Maximum Power Point Tracking
Wide Input Voltage: 6.6V to 30V
Complete Charger Controller for 12V Lead-Acid Battery
Charge Current Up to 4A
High PWM Switching Frequency: 300KHz
Fixed Over-Charge Voltage
Charging Current is programmed with a sense resistor
Automatic Conditioning of Deeply Discharged Batteries
Automatic Recharge
Charger Status Indication
Soft Start
Battery Overvoltage Protection
Operating Ambient Temperature: 40 to 85
Available in 10 Pin SSOP Package
Pb-free , RoHS Compliant, and Halogen Free
Application Note
Quick Start of CN3767/CN3801/CN3791 Demo Board
Copyright©2019-2020  Shanghai Consonance Electronics Incorporated. All rights reserved.