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LT1578CS8 Datasheet(PDF) 16 Page - Linear Technology

Part # LT1578CS8
Description  1.5A, 200kHz Step-Down Switching Regulator
PDF  28 Pages
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Manufacturer  LINER [Linear Technology]
Direct Link  http://www.linear.com
Logo LINER - Linear Technology

LT1578CS8 Datasheet(HTML) 16 Page - Linear Technology

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LT1578/LT1578-2.5
APPLICATIONS INFORMATION
Figure 6. High Speed Switching Path
Figure 5. Suggested Layout for LT1578
VOUT
VIN
SW
BOOST
FB
SYNC
SHDN
VC
GND
1578 F05
GND
KEEP INPUT
CAPACITOR
AND CATCH
DIODE CLOSE
TO REGULATOR
AND TERMINATE
THEM TO THE
SAME POINT
CONNECT OUTPUT
CAPACITOR DIRECTLY
TO HEAVY GROUND
TAKE OUTPUT DIRECTLY FROM END
OF OUTPUT CAPACITOR TO AVOID
PARASITIC RESISTANCE AND
INDUCTANCE (KELVIN CONNECTION)
MINIMIZE AREA
OF CONNECTIONS
TO SWITCH NODE
AND BOOST NODE
GROUND RING NEED NOT BE AS SHOWN
(NORMALLY EXISTS AS INTERNAL PLANE)
MINIMIZE SIZE
OF FEEDBACK PIN
CONNECTIONS
TO AVOID PICKUP
TERMINATE
FEEDBACK
RESISTORS AND
COMPENSATION
COMPONENTS
DIRECTLY TO
SWITCHER
GROUND PIN
CC
RC
R1
D1
C3
D2
L1
C1
C2
R2
1578 F06
5V
L1
VIN
HIGH
FREQUENCY
CIRCULATING
PATH
LOAD
SWITCH NODE



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