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LM2576T-3.3 Datasheet(PDF) 1 Page - Semtech Corporation

Part # LM2576T-3.3
Description  1A & 3A Miniconverter Switching Regulators
Download  19 Pages
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Manufacturer  SEMTECH [Semtech Corporation]
Direct Link  http://www.semtech.com
Logo SEMTECH - Semtech Corporation

LM2576T-3.3 Datasheet(HTML) 1 Page - Semtech Corporation

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LM2575 & LM2576
1A & 3A Miniconverter
Switching Regulators
POWER MANAGEMENT
Revision 1, January 2001
u Pin for pin replacement for National’s LM2575/6
series
u DC-to-DC buck or buck/boost converter requiring
only 4 support components
u Fixed or adjustable voltages
u Preset output voltages of 3.3V, 5V and 12V
u Wide output voltage range, 1.23V to 35V
u 82% typical efficiency @ 5V out
u Wide input voltage range, 4V to 40V
u Inhibit/enable control pin
u Industrial temperature range
u TO-220 and TO-263 packages
The LM2575/6 series switching regulators are monolithic
integrated circuits designed for use in “buck” or “buck/
boost” regulator applications requiring accurate output
voltages over combined variations of line, load and
temperature. This unique series greatly simplifies
switching power supply design. The LM2575 has a
maximum output current of 1A and the LM2576 is rated
for 3A.
The LM2575/6 series miniconverters include a
switching regulator and compensation network all within
the same package. Just add a choke, catch diode and
two capacitors to obtain an efficient DC-to-DC converter.
The current limit and thermal shutdown features of the
LM2575/6 series fully protect the device against
overstress conditions.
The LM2575/6 series offers an alternative to popular 3
terminal linear regulators by providing higher efficiency
with reduced heatsink size. In many applications a heat
sink will not be required.
u Micro controller power supplies
u Medical equipment
u Industrial power supplies
u Instrumentation power supplies
Description
Features
Applications
Typical Application Circuits
5
7
5
2
M
L6
7
5
2
M
L
L
1
H
µ
0
3
3H
µ
0
0
1
D
1
A
3A
7
C
N
I
F
µ
8
6F
µ
0
2
1
C
T
U
O
F
µ
0
3
3F
µ
0
0
0
,
1


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