LM2575T-5.0 datasheet(12/27 Pages) NSC

部件名	LM2575T-5.0

功能描述	SIMPLE SWITCHER 1A Step-Down Voltage Regulator

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制造商	NSC [National Semiconductor (TI)]

网页	http://www.national.com

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12 / 27 page

Test Circuit and Layout Guidelines (Continued)

Fixed Output Voltage Versions

01147508

CIN — 100 µF, 75V, Aluminum Electrolytic

COUT — 330 µF, 25V, Aluminum Electrolytic

D1 — Schottky, 11DQ06

L1 — 330 µH, PE-52627 (for 5V in, 3.3V out, use 100 µH, PE-92108)

Adjustable Output Voltage Version

01147509

where VREF = 1.23V, R1 between 1k and 5k.

R1 — 2k, 0.1%

R2 — 6.12k, 0.1%

Note: Pin numbers are for the TO-220 package.

FIGURE 2.

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