LM2576HVS-ADJ National Semiconductor, LM2576HVS-ADJ Datasheet - Page 10
LM2576HVS-ADJ
Manufacturer Part Number
LM2576HVS-ADJ
Description
Voltage Regulator IC
Manufacturer
National Semiconductor
Datasheets
1.LM2576SX-5.0.pdf
(24 pages)
2.LM2576SX-5.0.pdf
(24 pages)
3.LM2576SX-5.0.pdf
(22 pages)
Specifications of LM2576HVS-ADJ
Input Voltage
60V
No. Of Pins
3
Peak Reflow Compatible (260 C)
No
Termination Type
SMD
Supply Voltage Max
60V
Leaded Process Compatible
No
Package / Case
3-TO-263
Output Current Max
3A
Lead Free Status / RoHS Status
Contains lead / RoHS non-compliant
Available stocks
Company
Part Number
Manufacturer
Quantity
Price
Company:
Part Number:
LM2576HVS-ADJ
Manufacturer:
NS
Quantity:
100
Part Number:
LM2576HVS-ADJ/NOPB
Manufacturer:
NS/国半
Quantity:
20 000
www.national.com
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.
C
C
D
L
R
R
where V
1
IN
OUT
1
1
2
— 100 µH, Pulse Eng. PE-92108
— Schottky, MBR360
— 2k, 0.1%
— 6.12k, 0.1%
— 100 µF, 75V, Aluminum Electrolytic
— 1000 µF, 25V, Aluminum Electrolytic
REF
= 1.23V, R1 between 1k and 5k.
Adjustable Output Voltage Version
Fixed Output Voltage Versions
FIGURE 2.
10
Single-point grounding (as indicated) or ground plane con-
struction should be used for best results. When using the
Adjustable version, physically locate the programming resis-
tors near the regulator, to keep the sensitive feedback wiring
short.
01147607
01147608