Product parameters

Funtion：1A LiFePO4 Battery Charger

Opration Mode：Linear

Battery：Single Cell LiFePO4 Battery

Battery No.：1

Vout Range：0V-3.6V

Vin Range：3.8V - 6V

Max Charge Current：1A

Operating Current：450uA

Solar Panel charge：No

Chip Temperature Regulation：Yes

Package：eSOP8

Chip Enable：No

On-chip Power MOSFET：Yes

General Description:

The CN3058E is a complete constant-current /constant voltage linear charger for single cell LiFePO4 rechargeable batteries. The device contains an on-chip power MOSFET and eliminates the need for the external sense resistor and blocking diode. Its low external component count makes CN3058E ideally suited for portable applications.

Thermal feedback regulates the charge current to limit the die temperature during high power operation or high ambient temperature. The regulation voltage is internally fixed at 3.6V with 1.5% accuracy, it can also be adjusted with an external resistor. The charge current can be programmed externally with a single resistor. When the input supply (wall adapter or USB supply) is removed, the CN3058E automatically enters a low power sleep mode , dropping the battery drain current to less than 3uA. Other features include undervoltage lockout, automatic recharge, battery temperature sensing and charging/termination indicator.

The CN3058E is available in a thermally enhanced eSOP8 package.

 

Applications:

l  Miner's lamp

l  LiFePO4 battery applications

l  Lead-acid batteries

l  A variety of chargers

 

Features:

l  Complete Charge Management for Single Cell LiFePO4 Battery

l  Input voltage range from 3.8V to 6V

l  On-chip Power MOSFET

l  No external Blocking Diode or Current Sense Resistors Required

l  Preset 3.6V Regulation Voltage with 1.5% Accuracy, adjustable with an external resistor

l  Precharge Conditioning for Reviving Deeply Discharged Cells and Minimizing Heat Dissipation During Initial Stage of Charge

l  Programmable Continuous Charge Current Up to 1A

l  Constant-Current/Constant-Voltage/Constant-Temperature Operation with Thermal Regulation to Maximize Charge Rate Without Risk of Overheating

l  Automatic Low-Power Sleep Mode When Input Supply Voltage is Removed

l  Status Indication for LEDs or uP Interface

l  C/10 Charge Termination

l  Automatic Recharge

l  Battery Temperature Sensing

l  Available in thermally enhanced eSOP8 Package

l  Pb-free, rohs compliant and Halogen free