CN3058中文資料上海如韻數(shù)據(jù)手冊PDF規(guī)格書

Description

The CN3058 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 CN3058

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 CN3058 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 CN3058 is available in 8-pin SOP package.

Features:

? Complete Charge Management for Single Cell

LiFePO4 Battery

? Input voltage range from 3.8V to 6V

? On-chip Power MOSFET

? No external Blocking Diode or Current Sense

Resistors Required

? Preset 3.6V Regulation Voltage with 1.5

Accuracy, adjustable with an external resistor

? Precharge Conditioning for Reviving Deeply

Discharged Cells and Minimizing Heat

Dissipation During Initial Stage of Charge

? Programmable Continuous Charge Current Up

to 500mA

? Constant-Current/Constant-Voltage/Constant-

Temperature Operation with Thermal

Regulation to Maximize Charge Rate Without

Risk of Overheating

? Automatic Low-Power Sleep Mode When Input

Supply Voltage is Removed

? Status Indication for LEDs or uP Interface

? C/10 Charge Termination

? Automatic Recharge

? Battery Temperature Sensing

? Available in SOP8 Package

? Pb-free, rohs compliant and Halogen free

Applications:

? Miner's lamp

? LiFePO4 battery applications

? Lead-acid batteries

? A variety of chargers