Features
LED Power Efficiency: up to 90%
Current Accuracy: 5%(V =3.6V to 1.8V
      @V =3.7V)
1MHz Switching Frequency
Uses small, Low Profile External Components
Low RDS(ON) : 100m? (TYP.)
Over Temperature Protection
Low Profile SOT-23-6 Package
Pb-Free Package
±
IN
F
Low Start-Up Voltage: 0.9V(I =270mA)
Low Hold Voltage:0.75V(I =200mA)
White LED Torch (Flashlight)
White LED Camera Flash
DSC(Digital Still Camera)Flash
Cellular Camera Phone Flash
PDA Camera Flash
Camcorder Torch(Flashlight) Lamp
The LC601 is a set-up DC-DC converter that
delivers  a  regulated  output  current.  The  device
sw i t c h e s  a t  a  1 . 0 M H z  c o n s t a n t  f r e q u e n c y,
allowing  for  the  use  of  small  value  external
inductor and ceramic capacitors.
The LC601 is targeted to be used for driving loads
up to 1A from a two-cell alkaline battery. The LED
current  can  be  programmed  by  the  external
current sense resistor, Rs, connected between the
feedback  pin  (FB)  and  ground.  A  low  95mV
feedback voltage reduces the power loss in the Rs
for  better  efficiency.  With  its  internal  2A,  100
device  can  provide  high
e ff i ci e n cy  e v e n  a t  h e a vy  lo a d .  D u r i n g  t h e
shutdown mode, the feedback resistor Rs and the
load are completely disconnected and the current
consumption is reduced to less than 1uA. 
LED
LED
Applications
General Description
mΩ
NMOS  switch,  th