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LM2576 Datasheet(PDF) 4 Page - HTC Korea TAEJIN Technology Co.

No. de pieza LM2576
Descripción Electrónicos  3.0A, 52kHz, Step-Down Switching Regulator
Download  14 Pages
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Fabricante Electrónico  HTC [HTC Korea TAEJIN Technology Co.]
Página de inicio  http://www.htckorea.co.kr
Logo HTC - HTC Korea TAEJIN Technology Co.

LM2576 Datasheet(HTML) 4 Page - HTC Korea TAEJIN Technology Co.

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3.0A, 52kHz, Step-Down Switching Regulator
LM2576
All Output Voltage Versions
TJ= 0 to +125℃
47
-
58
%
A
mA
ICL
IL
nA
kHz
V
11
50
30
6.9
9
Min
TYP
94
98
1.5
42
-
-52
Max Duty Cycle ("0") [Note 5]
DC
mA
-
7.5
-
Output = -1.0V
-
2
Feedback Bias Current (Vout=5.0V [Adjustable Version Only])
Ib
1.8
-
ON/OFF Pin = 0V (Regulator ON), TJ=25℃
IIL
-
0
5.0
ON/OFF Pin = 5.0V (Regulator OFF), TJ=25℃
IIH
-15
30
ON/OFF Pin Input Current (Test Circuit Figure 15)
1
TJ= -40 to +125℃
-
-
0.8
TJ=25℃
-
1.2
-
Vout=Nominal Output Voltage
VIH
VIL
-
TJ= -40 to +125℃
2.4
-
TJ=25℃
2.2
1.4
Vout=0V
400
ON/OFF Pin Logic Input Level (Test circuit Figure 15)
TJ= -40 to +125℃
--
TJ=25℃
-
80
200
Standby Quiescent Current (ON/OFF Pin = 5.0V ("off"))
ISTBY
TJ= -40 to +125℃
--
TJ=25℃
-5
Quiescent Current [Note 6]
IQ
6
Output = 0V
-
0.8
Output Leakage Current [Note 6 and 7], TJ=25℃
TJ= -40 to +125℃
3.5
5.8
Current Limit (Peak Current [Note 3 and 4])
TJ=25℃
4.2
63
TJ= -40 to +125℃
--
Vsat
TJ=25℃
-
Saturation Voltage (Iout=3.0A [note 4])
TJ= -40 to +125℃
--
Fosc
TJ= -40 to +125℃
Unit
Max
Characteristics
Symbol
HTC
- 4 -
TJ=25℃
-
25
100
200
Oscillator Frequency [Note 3]
V
TJ=25℃
V
ELECTRICAL CHARACTERISTICS / Device Parameters
(Unless otherwise specified, Vin = 12 V for the 3.3 V, 5.0 V, and Adjustable version, Vin = 25 V for the 12
V version, and Vin = 30 V for the 15 V 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.)
3. The oscillator frequency reduces to approximately 18 kHz in the event of an output short or an overload which
causes the regulated output voltage to drop approximately 40% from the nominal output voltage. This self
protection
feature lowers the average dissipation of the IC by lowering the minimum duty cycle from 5% down to
approximately
2%.
4. Output (Pin 2) sourcing current. No diode, inductor or capacitor connected to output pin.
5. Feedback (Pin 4) removed from output and connected to 0 V.
6. Feedback (Pin 4) removed from output and connected to +12 V for the Adjustable, 3.3 V, and
5.0V ersions, and +25 V for the 12 V and15 V versions, to force the output transistor “off”.
7. Vin = 40 V.


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