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LM2576BT Datasheet(PDF) 4 Page - Micrel Semiconductor

No. de pieza LM2576BT
Descripción Electrónicos  52kHz Simple 3A Buck Voltage Regulator
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Fabricante Electrónico  MICREL [Micrel Semiconductor]
Página de inicio  http://www.micrel.com
Logo MICREL - Micrel Semiconductor

LM2576BT Datasheet(HTML) 4 Page - Micrel Semiconductor

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October 1998
4-123
LM2576
Micrel
4
Electrical Characteristics (continued)
LM2576
Units
Symbol
Parameter
Conditions
Typ
Limit
(Limits)
(Note 2)
DEVICE PARAMETERS, ADJUSTABLE REGULATOR
I
B
Feedback Bias Current
V
OUT = 5V
50
100/500
nA
DEVICE PARAMETERS, FIXED and ADJUSTABLE REGULATORS
f
O
Oscillator Frequency
52
kHz
47/42
kHz (min)
58/63
kHz (max)
V
SAT
Saturation Voltage
I
OUT = 3A (Note 4)
1.4
V
1.8/2.0
V(max)
DC
Max Duty Cycle (ON)
(Note 5)
98
%
93
%(min)
I
CL
Current Limit
Peak Current, t
ON ≤ 3µs (Note 4)
5.8
A
4.2/3.5
A(min)
6.9/7.5
A(max)
I
L
Output Leakage Current
V
IN = 40V, (Note 6),
Output = 0V
2
mA(max)
Output = –1V
7.5
mA
(Note 6)
Output = –1V
30
mA(max)
I
Q
Quiescent Current
(Note 6)
5
mA
10
mA(max)
I
STBY
Standby Quiescent
ON/OFF Pin = 5V (OFF)
50
µA
Current
200
µA(max)
θ
JA
Thermal Resistance
T,U Package, Junction to Ambient (Note 7)
65
°C/W
θ
JA
T,U Package, Junction to Ambient (Note 8)
45
θ
JC
T,U Package, Junction to Case
2


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