Product Introduction

Product parameters

Funtion：2A, Single-Cell LiFePO4 Battery

Opration Mode：Switch

Battery：Single-Cell LiFePO4 Battery

Battery No.：1

Vout Range：0V-3.645V

Vin Range：4.1V to 6.5V

Max Charge Current：2A

Operating Current：510uA

Chip Temperature Regulation：No

Package：eSOP8

On-chip Power MOSFET：Yes

General Descriptions:

The CN3800 is a highly-integrated switch-mode single-cell LiFePO4 battery charger IC that can be powered by photovoltaic cell with few external components.

The CN3800 charges battery with constant current and constant voltage mode. Deeply discharged batteries are automatically trickle charged until the cell voltage exceeds 2.13V. After battery voltage rises above 2.13V, CN3800 enters constant current mode, in which the constant charge current is internally fixed at 2A. In constant voltage mode, the regulation voltage is fixed at 3.645V with ±50mV tolerance.

The charge cycle is terminated once the charge current drops to 200mA, and a new charge cycle automatically restarts if the battery voltage falls below 3.523V(Typical).

CN3800 will automatically enter sleep mode when input voltage is lower than battery voltage.

Other features include JEITA-compliant battery temperature monitoring, short battery protection, battery over voltage protection, junction over temperature protection and 2 status indications, etc.

CN3800 is available in thermally-enhanced 8-pin SOP package.

Applications:

l Power Bank

l Hand-held Equipment

l E-Cigarette

l Portable Industrial and Medical Equipment

l Standalone Battery Chargers

Features:

l Input Voltage Range: 4.1V to 6.5V

l Complete Charger IC for single-cell LiFePO4 Battery

l PFM Operation Mode

l Regulation Voltage: 3.645V±50mV