LTC4012CUF-1 Datasheet PDF - Linear Technology

●DESCRIPTION

●The  LTC4012  is  a  constant-current/constant-volt age  battery  charger  controller.  It  uses  a  synchronous

●quasi-constant  frequency  PWM  control  architecture that  will  not  generate  audible  noise  with  ceramic  bulk capacitors.  Charge  current  is  set  by  external  resistors  and  can  be  monitored  as  an  output  voltage. With no built-in termination, the LTC4012 family charges a wide range of batteries under external control.

●FEATURES

●  Geeral Purpose Battery Charger Cotroller

●  Efficiet 550kHz Sychroous Buck PWM Topology

●  ±0.5% Output Float Voltage Accuracy

●  Programmable Charge Curret: 4% Accuracy

●  Programmable AC Adapter Curret Limit: 3% Accuracy

●  o Audible oise with Ceramic Capacitors

●  IFET Low Loss Ideal Diode PowerPath™ Cotrol

●  Wide Iput Voltage Rage: 6V to 28V

●  Wide Output Voltage Rage: 2V to 28V

●  Idicator Outputs for AC Adapter Preset, Chargig, C/10 Curret Detectio ad Iput Curret Limitig

●  Aalog Charge Curret Moitor

●  Micropower Shutdow

●  20-Pi 4mm ×4mm ×0.75mm QF Package

●APPLICATIOS

●  otebook Computers

●  Portable Istrumets

●  Battery Backup Systems