Product Introduction

Product parameters

Funtion：4A, Multi-Chemistry Battery Charger With Photovoltaic Cell MPPT Function

Opration Mode：Switch

Battery：lithium ion，LiFePO4 or Lithium Titanate batteries

Vout Range：0V-28V

Vin Range：6.6V to 30V

Max Charge Current：4A

Operating Current：1mA

Solar Panel charge：Yes

Chip Temperature Regulation：No

Package：SSOP10

Chip Enable：No

On-chip Power MOSFET：No

General Descriptions:

The CN3795 is a PWM switch-mode multi-chemistry battery charger controller that can be powered by photovoltaic cell with maximum power point tracking function using few external components.

The CN3795 is specially designed for charging lithium ion，LiFePO4 or Lithium Titanate batteries with constant current and constant voltage mode. In constant voltage mode, the regulation voltage is set by 2 external resistors. The constant charging current is programmable with a single current sense resistor.

Deeply discharged batteries are automatically trickle charged at 17.5% of the programmed constant charging current until the cell voltage exceeds 66.5% of constant voltage. The charge cycle is terminated once the charging current drops to 16% of full-scale current, and a new charge cycle automatically restarts if the charge current rises above 58.8% of full-scale charge current. CN3795 will automatically enter sleep mode when input voltage is lower than battery voltage.

Other features include under voltage lockout, battery over voltage protection, status indication, etc.

CN3795 is available in a space-saving 10-pin SSOP package.

Applications:

l Hand-held Equipment

l Emergency Lamp and Camping Lamp

l Battery-Backup Systems

l Portable Industrial and Medical Equipment

l Standalone Chargers for Lithium ion,

LiFePO4 or Lithium Titanate Batteries

Features:

l Photovoltaic Cell Maximum Power Point Tracking

l Wide Input Voltage: 6.6V to 30V