LM2672MX-ADJ datasheet(10/33 Pages) TI

номер детали	LM2672MX-ADJ

подробное описание детали	LM2672 SIMPLE SWITCHER Power Converter High Efficiency 1A Step-Down Voltage

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LM2672

SNVS136K – SEPTEMBER 1998 – REVISED APRIL 2013

www.ti.com

TEST CIRCUIT AND LAYOUT GUIDELINES

CIN - 22 μF, 50V Tantalum, Sprague “199D Series”

COUT - 47 μF, 25V Tantalum, Sprague “595D Series”

D1 - 3.3A, 50V Schottky Rectifier, IR 30WQ05F

L1 - 68

μH Sumida #RCR110D-680L

CB - 0.01 μF, 50V Ceramic

Figure 22. Standard Test Circuits and Layout Guides

Fixed Output Voltage Versions

CIN - 22 μF, 50V Tantalum, Sprague “199D Series”

COUT - 47 μF, 25V Tantalum, Sprague “595D Series”

D1 - 3.3A, 50V Schottky Rectifier, IR 30WQ05F

L1 - 68

μH Sumida #RCR110D-680L

R1 - 1.5 k

Ω, 1%

CB - 0.01 μF, 50V Ceramic

For a 5V output, select R2 to be 4.75 k

Ω, 1%

where VREF = 1.21V

Use a 1% resistor for best stability.

Figure 23. Standard Test Circuits and Layout Guides

Adjustable Output Voltage Versions

10

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