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LM2576T-ADJ Fiches technique(PDF) 6 Page - HTC Korea TAEJIN Technology Co.

No de pièce LM2576T-ADJ
Description  3A, 52kHz, Step-Down Switching Regulator
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Fabricant  HTC [HTC Korea TAEJIN Technology Co.]
Site Internet  http://www.htckorea.co.kr
Logo HTC - HTC Korea TAEJIN Technology Co.

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3A, 52kHz, Step-Down Switching Regulator
LM2576
Dec 2011 – Rev. 1.3
- 6
-
HTC
ELECTRICAL CHARACTERISTICS / SYSTEM PARAMETERS ([Note 1] Test Circuit Figure 15)
(Unless otherwise specified, Vin = 12V for the 3.3V, 5.0V, and Adjustable version, Vin = 25V for the 12V version.
ILoad = 500 mA. For typical values TJ = 25°C, for min/max values TJ is the operating junction temperature range
that applies [Note 2], unless otherwise noted.)
Characteristics
Symbol
Min
TYP
Max
Unit
LM2576-3.3V ([Note 1] Test Circuit Figure 2)
Output Voltage (Vin = 12V, ILOAD=0.5A, TJ=25℃)
Vout
3.234
3.3
3.366
V
Output Voltage (6.0V≤Vin≤40V, 0.5A≤ILOAD≤3.0A
Vout
V
TJ=25℃
3.168
3.3
3.432
TJ= -40℃ ~ +125℃
3.135
-
3.465
Efficiency (Vin=12V, ILOAD=3.0A)
η
-
75
-
%
LM2576-5.0V ([Note 1] Test Circuit Figure 2)
Output Voltage (Vin = 12V, ILOAD=0.5A, TJ=25℃)
Vout
4.9
5.0
5.1
V
Output Voltage (8.0V≤Vin≤40V, 0.5A≤ILOAD≤3.0A
Vout
V
TJ=25℃
4.8
5.0
5.2
TJ= -40℃ ~ +125℃
4.75
-
5.25
Efficiency (Vin=12V, ILOAD=3.0A)
η
-
77
-
%
LM2576-12V ([Note 1] Test Circuit Figure 2)
Output Voltage (Vin = 25V, ILOAD=0.5A, TJ=25℃)
Vout
11.76
12
12.24
V
Output Voltage (15V≤Vin≤40V, 0.5A≤ILOAD≤3.0A
Vout
V
TJ=25℃
11.52
12
12.48
TJ= -40℃ ~ +125℃
11.4
-
12.6
Efficiency (Vin=25V, ILOAD=3.0A)
η
-
88
-
%
LM2576-ADJ ([Note 1] Test Circuit Figure 2)
Feedback Voltage (Vin=12V, ILOAD=0.5A, TJ=25℃)
Vout
1.217
1.23
1.243
V
Feedback Voltage (8.0V≤Vin≤40V, 0.5A≤ILOAD≤3.0A, Vout=5.0V)
Vout
V
TJ=25℃
1.193
1.23
1.267
TJ= -40℃ ~ +125℃
1.18
-
1.28
Efficiency (Vin=12V, ILOAD=3.0A, Vout=5.0V)
η
-
77
-
%
1. External components such as the catch diode, inductor, input and output capacitors can affect switching
regulator system performance.
When the LM2576 is used as shown in the Figure 15 test circuit, system performance will be as shown in
system parameters section.
2. Tested junction temperature range for the LM2576: Tlow = –40°C Thigh = +125°C


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