LM2575HVS-5.0 National Semiconductor, LM2575HVS-5.0 Datasheet - Page 9

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

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

Typical Performance Characteristics
Feedback Pin Current
Switching Waveforms
V
A: Output Pin Voltage, 10V/div
B: Output Pin Current, 1A/div
C: Inductor Current, 0.5A/div
D: Output Ripple Voltage, 20 mV/div,
AC-Coupled
Horizontal Time Base: 5 µs/div
Test Circuit and Layout Guidelines
As in any switching regulator, layout is very important. Rap-
idly switching currents associated with wiring inductance
generate voltage transients which can cause problems. For
minimal inductance and ground loops, the length of the leads
indicated by heavy lines should be kept as short as possible.
OUT
= 5V
DS011475-5
DS011475-6
(Circuit of Figure 2 ) (Continued)
Maximum Power Dissipation
(TO-263) (See (Note 12))
Load Transient Response
9
Single-point grounding (as indicated) or ground plane con-
struction should be used for best results. When using the Ad-
justable version, physically locate the programming resistors
near the regulator, to keep the sensitive feedback wiring
short.
DS011475-28
DS011475-7
www.national.com