Part Number: OZ522, 0Z522
Function: Charging algorithm to control 1 – 4 cell LiIon battery
Package: SSOP 20 Pin Type
Manufacturer: O2Micro
Images:
Description
The OZ522 provides a complete charging algorithm to control 1 – 4 cell LiIon batteries, used in Portable DVD (PDVD), and other portable electronic equipment. It delivers a wake-up charging current for discharged batteries followed by a fast charging current to minimize the charging time, and keeps the battery regulation voltage with 1% accuracy. A battery temperature sensing scheme allows the battery to be charged within a user-defi ned temperature range. The switch mode charger allows use of low AC adapter voltage at high effi ciency. […]
Features
• 550KHz switching mode charger for 1 – 4 cell LiIon or LiPolymer batteries
• Supports fast charge mode
• Wake up charging function for discharged batteries
• Built-in charge termination function
• Internal safety timer for charger
• 92% effi ciency
• Automatic battery recharge
• 1% constant voltage accuracy
• Charge status indication by LED
• Battery absence detection
DC/DC Converters:
• Two switch mode buck converters with under-voltage protection
• 2% voltage accuracy
• Output protection:
– Over-current for each DC/DC converter
– Over-voltage lockout on adap
Applications:
1. PDVD
OZ522 PDF Datasheet
