lm2675ldx-12 National Semiconductor Corporation, lm2675ldx-12 Datasheet - Page 9

• Manufacturer Part Number: lm2675ldx-12
• Description: Simple Switcher Power Converter High Efficiency 1a Step-down Voltage Regulator
• Manufacturer: National Semiconductor Corporation

Test Circuit and Layout Guidelines
C
C
D1 - 3.3A, 50V Schottky Rectifier, IR 30WQ05F
L1 - 68 µH Sumida # RCR110D-680L
C
C
C
D1 - 3.3A, 50V Schottky Rectifier, IR 30WQ05F
L1 - 68 µH Sumida # RCR110D-680L
R1 - 1.5 kΩ, 1%
C
For a 5V output, select R2 to be 4.75 kΩ, 1%
where V
Use a 1% resistor for best stability.
IN
OUT
B
IN
OUT
B
- 0.01 µF, 50V Ceramic
- 0.01 µF, 50V Ceramic
- 22 µF, 50V Tantalum, Sprague “199D Series”
- 22 µF, 50V Tantalum, Sprague “199D Series”
- 47 µF, 25V Tantalum, Sprague “595D Series”
- 47 µF, 25V Tantalum, Sprague “595D Series”
REF
= 1.21V
FIGURE 2. Standard Test Circuits and Layout Guides
FIGURE 3. Standard Test Circuits and Layout Guides
Adjustable Output Voltage Version
Fixed Output Voltage Versions
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01280323
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