LM1575 National Semiconductor, LM1575 Datasheet - Page 10

• Manufacturer Part Number: LM1575
• Description: SIMPLE SWITCHER 1A Step-Down Voltage Regulator
• Manufacturer: National Semiconductor

www.national.com
Test Circuit and Layout Guidelines
C
C
D1 — Schottky, 11DQ06
L1 — 330 µH, PE-52627 (for 5V in, 3.3V out, use 100 µH, PE-92108)
where V
R1 — 2k, 0.1%
R2 — 6.12k, 0.1%
Note: Pin numbers are for the TO-220 package.
IN
OUT
— 100 µF, 75V, Aluminum Electrolytic
— 330 µF, 25V, Aluminum Electrolytic
REF
= 1.23V, R1 between 1k and 5k.
Adjustable Output Voltage Version
Fixed Output Voltage Versions
FIGURE 2.
(Continued)
10
DS011475-8
DS011475-9