Test Circuit and Layout Guidelines
(Continued)
Fixed Output Voltage Versions
01147508
C
IN
— 100 µF, 75V, Aluminum Electrolytic
C
OUT
— 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 V
REF
= 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.
LM1575/LM2575/LM2575HV
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