LM2575HVS-5.0 National Semiconductor, LM2575HVS-5.0 Datasheet - Page 12

DC/DC Converter IC

LM2575HVS-5.0

Manufacturer Part Number
LM2575HVS-5.0
Description
DC/DC Converter IC
Manufacturer
National Semiconductor
Datasheets

Specifications of LM2575HVS-5.0

Input Voltage
60V
Output Current
1A
Output Voltage
5V
No. Of Pins
24
Mounting Type
Surface Mount
Peak Reflow Compatible (260 C)
No
Supply Voltage Max
60V
Leaded Process Compatible
No
Lead Free Status / RoHS Status
Contains lead / RoHS non-compliant

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Part Number
Manufacturer
Quantity
Price
Part Number:
LM2575HVS-5.0
Manufacturer:
TI/NS
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10 000
Part Number:
LM2575HVS-5.0
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Part Number:
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Test Circuit and Layout Guidelines
As in any switching regulator, layout is very important. Rapidly
switching currents associated with wiring inductance gener-
ate voltage transients which can cause problems. For minimal
inductance and ground loops, the length of the leads indicated
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.
12
by heavy lines should be kept as short as possible. Single-
point grounding (as indicated) or ground plane construction
should be used for best results. When using the Adjustable
version, physically locate the programming resistors near the
regulator, to keep the sensitive feedback wiring short.
1147508
1147509

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