Controller IC Chip - MOSFET NB670GQZ NB670GQ NB670 chip for laptop - Ολοκληρωμένο τσιπ φορητού υπολογιστή (Κωδ.1-CHIP0727) Synchronous Buck Converter With LDO The  NB670  is  a  fully  integrated  high  frequency  synchronous  rectified  step-down  switch  mode  converter   with   3.3V   fixed   output   voltage.   It   offers  very  compact  solution  to  achieve  6A  continuous  output  current  and  9A  peak  output  current  over  a  wide  input  supply  range  with  excellent  load  and  line  regulation.  The  NB670  operates  at  high  efficiency  over  a  wide  output  current  load  range.  Constant-On-Time  (COT)  control  mode  provides  fast  transient  response  and eases loop stabilization. Under voltage lockout is internally set as 4.65 V. An  open  drain  power  good  signal  indicates  the  output is within its nominal voltage range. NB670 also provides a 3.3V LDO, which can be used to power the external peripheries, such as the  keyboard  controller  in  the  laptop  

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