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LM2576-5.0WU 数据表(PDF) 4 Page - Micrel Semiconductor

部件名 LM2576-5.0WU
功能描述  52kHz Simple 3A Buck Regulator
Download  9 Pages
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制造商  MICREL [Micrel Semiconductor]
网页  http://www.micrel.com
标志 MICREL - Micrel Semiconductor

LM2576-5.0WU 数据表(HTML) 4 Page - Micrel Semiconductor

  LM2576-5.0WU Datasheet HTML 1Page - Micrel Semiconductor LM2576-5.0WU Datasheet HTML 2Page - Micrel Semiconductor LM2576-5.0WU Datasheet HTML 3Page - Micrel Semiconductor LM2576-5.0WU Datasheet HTML 4Page - Micrel Semiconductor LM2576-5.0WU Datasheet HTML 5Page - Micrel Semiconductor LM2576-5.0WU Datasheet HTML 6Page - Micrel Semiconductor LM2576-5.0WU Datasheet HTML 7Page - Micrel Semiconductor LM2576-5.0WU Datasheet HTML 8Page - Micrel Semiconductor LM2576-5.0WU Datasheet HTML 9Page - Micrel Semiconductor  
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M9999-082605-B
4
August 2005
LM2576
Micrel, Inc.
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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