LM2675M-ADJ Datasheet, PDF (10/30 Pages) Texas Instruments – LM2675 SIMPLE SWITCHER® Power Converter High Efficiency 1A Step-Down Voltage Regulator

LM2675
SNVS129E – MAY 2004 – REVISED JUNE 2005
Test Circuit and Layout Guidelines
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C_IN - 22 μF, 50V Tantalum, Sprague “199D Series”
C_OUT - 47 μF, 25V Tantalum, Sprague “595D Series”
D1 - 3.3A, 50V Schottky Rectifier, IR 30WQ05F
L1 - 68 μH Sumida #RCR110D-680L
C_B - 0.01 μF, 50V Ceramic
Figure 22. Standard Test Circuits and Layout Guides
Fixed Output Voltage Versions
C_IN - 22 μF, 50V Tantalum, Sprague “199D Series”
C_OUT - 47 μF, 25V Tantalum, Sprague “595D Series”
D1 - 3.3A, 50V Schottky Rectifier, IR 30WQ05F
L1 - 68 μH Sumida #RCR110D-680L
R1 - 1.5 kΩ, 1%
C_B - 0.01 μF, 50V Ceramic
For a 5V output, select R2 to be 4.75 kΩ, 1%
where V_REF = 1.21V
Use a 1% resistor for best stability.
Figure 23. Standard Test Circuits and Layout Guides
Adjustable Output Voltage Version
10
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