<rt id="ekqmq"><small id="ekqmq"></small></rt>
<acronym id="ekqmq"><small id="ekqmq"></small></acronym>
<acronym id="ekqmq"><center id="ekqmq"></center></acronym><acronym id="ekqmq"><small id="ekqmq"></small></acronym>
<rt id="ekqmq"><center id="ekqmq"></center></rt>
<acronym id="ekqmq"><center id="ekqmq"></center></acronym>
微橋科技產品新聞動態管理發布系統 現在是
首頁 ·公司動態 ·產品動態 ·原廠動態 ·行業動態 ·技術資料 ·LED驅動 ·DC-DC ·AC-DC ·MOSFET ·音頻功放 ·電池管理 ·霍爾及馬達驅動 ·其他 ·聯系我們

當前位置:首頁>>電池管理>> PT6112-Standalone Linear Li-Ion Battery Charger    雙擊自動滾屏
發布者:微橋PT6112 發布時間:2010/11/26 閱讀:11264次    關鍵字: PT6112 PT6102 PT6102 PT6160 微橋 鋰電池充電
PT6112-Standalone Linear Li-Ion Battery Charger


 
概述
    PT6112是一款高度集成的單節鋰離子電池充電器,較少的外部元件數目使得它非常適合于便攜式應用。內部集成功率管,不需要外部檢測電阻和防倒灌二極管。充電電流通過外部電阻進行設置,充電結束電壓固定在4.2V。熱反饋可以自動調節充電電流,可以在大功率或高環境溫度下對芯片加以保護。

    PT6112 分三個階段對電流進行充電:當電池電壓低于2.9V時是涓流充電,當電池電壓大于2.9V時是恒流充電,并且涓流充電電流是恒流充電電流的1/10,當電池電壓到4.2V時進行恒壓充電,在恒壓充電過程中,充電電流逐漸減少,當減少到恒流充電電流的1/10時,結束充電過程。

關鍵特性
  • 可以用USB端口直接對單節電池進行充電
  • 充電電流最大可以到800mA
  • 無需外部功率管,檢測電阻和防倒灌二極管
  • 涓流、恒流、恒壓三階段,并有熱調節功能,可以在無過熱的情況下最大化充電電流
  • 精度達±1%的4.2V充電電壓
  • SOT23-5和ESOP8封裝
典型應用電路

GENERAL DESCRIPTION

    The PT6112 is a highly integrated Li-ion battery linear charging management device targeted at space limited portable applications. The PT6112 offers an integrated MOSFET and current sensor, reverse blocking protection, high accuracy current and voltage regulation, charge status indication, and charge termination in a SOT23 or ESOP8 package. The PT6112 has low external component count. The PT6112 charges a battery in three phases: trickle charging, constant current, and constant voltage. No external sense resistor is needed, and no blocking diode is required due to the internal MOSFET architecture. The thermal feedback regulates the charging current to limit the chip temperature during high power operation or high ambient temperature to maximize the charge rate without risk of overheating . The charge voltage is fixed at 4.2V, and the charge current can be programmed externally with a single resistor. The PT6112 automatically terminates the charge cycle when the charge current drops to 1/10 the programmed value after the final float voltage is reached. The PT6112 automatically re-starts the charge if the battery voltage falls below an internal threshold.
 
 FEATURES
 

l         Charges Single Cell Li-Ion Batteries Directly from USB Port

l         Programmable Charge Current Up to 800mA

l         No MOSFET, Sense Resistor or Blocking Diode Required

l         Complete Linear Charger in SOT23-5 or ESOP8 Package for Single Cell Lithium-Ion Batteries

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

l         Preset 4.2V Charge Voltage with ±1% Accuracy
 
 APPLICATIONS
 

l        Cellular Telephones, PDAs, MP3 Players

l        Bluetooth Applications

l        Digital Cameras

l        Charging Docks and Cradles
 
本文共分 1

  • 上篇文章SS54(5A/40V),SS56(5A/60V),肖特基二極管
  • 下篇文章PT6102-單節線性鋰電池充電管理IC
  •  
     

    版權所有 Copyright Micro Bridge Technology Co.,Ltd. All rights reserved.粵ICP備05065909號
    欧美A一片仑里片|免费一级a一片手机看|区一区二视频免费观看|亚洲欧美日产有码|免费AV在线看不卡|青春娱视频盛宴