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LM2575S33 数据手册 - National Semiconductor（美国国家半导体）
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LM2575S33数据手册
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Absolute Maximum Ratings (Note 1)
If Military/Aerospace specified devices are required,
please contact the National Semiconductor Sales Office/
Distributors for availability and specifications.
Maximum Supply Voltage
LM1575/LM2575 45V
LM2575HV 63V
ON /OFF Pin Input Voltage
−0.3V ≤ V ≤ +V
IN
Output Voltage to Ground
(Steady State) −1V
Power Dissipation Internally Limited
Storage Temperature Range −65˚C to +150˚C
Maximum Junction Temperature 150˚C
Minimum ESD Rating
(C = 100 pF, R = 1.5 kΩ)2kV
Lead Temperature
(Soldering, 10 sec.) 260˚C
Operating Ratings
Temperature Range
LM1575 −55˚C ≤ T
J
≤ +150˚C
LM2575/LM2575HV −40˚C ≤ T
J
≤ +125˚C
Supply Voltage
LM1575/LM2575 40V
LM2575HV 60V
LM1575-3.3, LM2575-3.3, LM2575HV-3.3
Electrical Characteristics
Specifications with standard type face are for T
J
= 25˚C, and those with boldface type apply over full Operating Tempera-
ture Range .
Symbol Parameter Conditions Typ LM1575-3.3 LM2575-3.3 Units
(Limits)
LM2575HV-3.3
Limit Limit
(Note 2) (Note 3)
SYSTEM PARAMETERS (Note 4) Test Circuit Figure 2
V
OUT
Output Voltage V
IN
= 12V, I
LOAD
= 0.2A 3.3 V
Circuit of Figure 2 3.267 3.234 V(Min)
3.333 3.366 V(Max)
V
OUT
Output Voltage 4.75V ≤ V
IN
≤ 40V, 0.2A ≤ I
LOAD
≤ 1A 3.3 V
LM1575/LM2575 Circuit of Figure 2 3.200/3.168 3.168/3.135 V(Min)
3.400/3.432 3.432/3.465 V(Max)
V
OUT
Output Voltage 4.75V ≤ V
IN
≤ 60V, 0.2A ≤ I
LOAD
≤ 1A 3.3 V
LM2575HV Circuit of Figure 2 3.200/3.168 3.168/3.135 V(Min)
3.416/3.450 3.450/3.482 V(Max)
η Efficiency V
IN
= 12V, I
LOAD
=1A 75 %
LM1575-5.0, LM2575-5.0, LM2575HV-5.0
Electrical Characteristics
Specifications with standard type face are for T
J
= 25˚C, and those with boldface type apply over full Operating Tempera-
ture Range.
Symbol Parameter Conditions Typ LM1575-5.0 LM2575-5.0 Units
(Limits)
LM2575HV-5.0
Limit Limit
(Note 2) (Note 3)
SYSTEM PARAMETERS (Note 4) Test Circuit Figure 2
V
OUT
Output Voltage V
IN
= 12V, I
LOAD
= 0.2A 5.0 V
Circuit of Figure 2 4.950 4.900 V(Min)
5.050 5.100 V(Max)
V
OUT
Output Voltage 0.2A ≤ I
LOAD
≤ 1A, 5.0 V
LM1575/LM2575 8V ≤ V
IN
≤ 40V 4.850/4.800 4.800/4.750 V(Min)
Circuit of Figure 2 5.150/5.200 5.200/5.250 V(Max)
V
OUT
Output Voltage 0.2A ≤ I
LOAD
≤ 1A, 5.0 V
LM2575HV 8V ≤ V
IN
≤ 60V 4.850/4.800 4.800/4.750 V(Min)
Circuit of Figure 2 5.175/5.225 5.225/5.275 V(Max)
LM1575/LM2575/LM2575HV
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