Absolute Maximum Ratings (Note 1)
If Military/Aerospace specified devices are required,
please contact the National Semiconductor Sales Office/
Distributors for availability and specifications.
Minimum ESD Rating
(C = 100 pF, R = 1.5 kΩ)
Lead Temperature
2 kV
(Soldering, 10 sec.)
260˚C
Maximum Supply Voltage
LM1575/LM2575
45V
63V
Operating Ratings
LM2575HV
Temperature Range
ON /OFF Pin Input Voltage
Output Voltage to Ground
(Steady State)
−0.3V ≤ V ≤ +VIN
LM1575
−55˚C ≤ TJ ≤ +150˚C
−40˚C ≤ TJ ≤ +125˚C
LM2575/LM2575HV
Supply Voltage
LM1575/LM2575
LM2575HV
−1V
Internally Limited
−65˚C to +150˚C
150˚C
Power Dissipation
40V
60V
Storage Temperature Range
Maximum Junction Temperature
LM1575-3.3, LM2575-3.3, LM2575HV-3.3
Electrical Characteristics
Specifications with standard type face are for TJ = 25˚C, and those with boldface type apply over full Operating Tempera-
ture Range .
Symbol
Parameter
Conditions
Typ
LM1575-3.3
LM2575-3.3
LM2575HV-3.3
Limit
Units
(Limits)
Limit
(Note 2)
(Note 3)
SYSTEM PARAMETERS (Note 4) Test Circuit Figure 2
VOUT
VOUT
VOUT
η
Output Voltage
VIN = 12V, ILOAD = 0.2A
3.3
3.3
3.3
75
V
Circuit of Figure 2
3.267
3.333
3.234
3.366
V(Min)
V(Max)
V
Output Voltage
4.75V ≤ VIN ≤ 40V, 0.2A ≤ ILOAD ≤ 1A
Circuit of Figure 2
LM1575/LM2575
3.200/3.168
3.400/3.432
3.168/3.135
3.432/3.465
V(Min)
V(Max)
V
Output Voltage
LM2575HV
4.75V ≤ VIN ≤ 60V, 0.2A ≤ ILOAD ≤ 1A
Circuit of Figure 2
3.200/3.168
3.416/3.450
3.168/3.135
3.450/3.482
V(Min)
V(Max)
%
Efficiency
VIN = 12V, ILOAD = 1A
LM1575-5.0, LM2575-5.0, LM2575HV-5.0
Electrical Characteristics
Specifications with standard type face are for TJ = 25˚C, and those with boldface type apply over full Operating Tempera-
ture Range.
Symbol
Parameter
Conditions
Typ
LM1575-5.0
LM2575-5.0
LM2575HV-5.0
Limit
Units
(Limits)
Limit
(Note 2)
(Note 3)
SYSTEM PARAMETERS (Note 4) Test Circuit Figure 2
VOUT
VOUT
VOUT
Output Voltage
VIN = 12V, ILOAD = 0.2A
5.0
5.0
5.0
V
Circuit of Figure 2
4.950
5.050
4.900
5.100
V(Min)
V(Max)
V
Output Voltage
0.2A ≤ ILOAD ≤ 1A,
8V ≤ VIN ≤ 40V
LM1575/LM2575
4.850/4.800
5.150/5.200
4.800/4.750
5.200/5.250
V(Min)
V(Max)
V
Circuit of Figure 2
0.2A ≤ ILOAD ≤ 1A,
8V ≤ VIN ≤ 60V
Output Voltage
LM2575HV
4.850/4.800
5.175/5.225
4.800/4.750
5.225/5.275
V(Min)
V(Max)
Circuit of Figure 2
5
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