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LM2575-ATA5R データシート(PDF) 1 Page - First Components International

部品番号 LM2575-ATA5R
部品情報  1.0A Step - Down Voltage Switching Regulators 1A output current
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メーカー  FCI [First Components International]
ホームページ  http://www.cotra.com.tw/
Logo FCI - First Components International

LM2575-ATA5R データシート(HTML) 1 Page - First Components International

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Description
5V, 12V, 15V and a versatile Adjustable output
a minimum number of external components.
frequency
oscillator.
replacement for popular three-terminal linear regulators,
and is requiring a smaller heat sink or even no heat sink.
performs well with standard
inductors from
several manufacturers, and simplifying the design of
switch-mode power supplies.
tolerance on output voltage within specified input voltages
protection under fault conditions.
TYPICAL APPLICATION
Features
3.3V, 5V, 12V, 15V and
Adjustable version output voltage range
1A output current
Requires Only 4 External Components
High Efficiency
TTL shutdown capability and low power
standby mode
Thermal shutdown, current limit protection
Uses standard inductors
52 kHz fixed frequency internal oscillator
7V - 40V
Unregulated
DC Input
+
C
IN
100 µF
+V
IN
1
5
3
4
2
GND
D1
1N5819
Output
330 µH
L1
Feedback
C
OUT
330 µF
5.0V, 1A
Regulated
Output
+
ON / OFF
Application
Pre-regulator for linear regulators
High-efficiency step-down buck regulator
On-card/ board switching regulators
Positive to negative converter (buck-boost
)
of regulators provides all the active functions
for a step- down (buck) switching regulator, and drives
1A load with excellent line and load regulation.
is available in fixed output volt ages of 3.3V,
version. These regulators are simple to use and require
Features include internal frequency compensation and
a fixed-
and output load conditions, and ±10% on the oscillator
frequency.
External
shutdown
is
included
with
50
uA(typical)
standby current. The output switch has cycle-by-cycle
current limiting as well as thermal shutdown for full
1.23V to 37V ±4% max over line and load
conditions
Adjustable output
versions
LM2575
LM2575
LM2575
LM2575 guarantee +/-4%
LM2575 high-efficiency
LM2575 -5.0
LM2575 1.0A Step - Down Voltage Switching Regulators


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