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 Seconds)
260˚C
Maximum Supply Voltage
LM2576
45V
63V
Operating Ratings
LM2576HV
Temperature Range
LM2576/LM2576HV
Supply Voltage
LM2576
ON /OFF Pin Input Voltage
Output Voltage to Ground
(Steady State)
−0.3V ≤ V ≤ +VIN
−40˚C ≤ TJ ≤ +125˚C
−1V
Internally Limited
−65˚C to +150˚C
150˚C
40V
60V
Power Dissipation
LM2576HV
Storage Temperature Range
Maximum Junction Temperature
LM2576-3.3, LM2576HV-3.3
Electrical Characteristics
Specifications with standard type face are for TJ = 25˚C, and those with boldface type apply over full Operating Temperature
Range.
Symbol
Parameter
Conditions
LM2576-3.3
Units
(Limits)
LM2576HV-3.3
Typ
3.3
3.3
3.3
75
Limit
(Note 2)
SYSTEM PARAMETERS (Note 3) Test Circuit Figure 2
VOUT
VOUT
VOUT
η
Output Voltage
VIN = 12V, ILOAD = 0.5A
V
Circuit of Figure 2
3.234
3.366
V(Min)
V(Max)
V
Output Voltage
LM2576
6V ≤ VIN ≤ 40V, 0.5A ≤ ILOAD ≤ 3A
Circuit of Figure 2
3.168/3.135
3.432/3.465
V(Min)
V(Max)
V
Output Voltage
LM2576HV
6V ≤ VIN ≤ 60V, 0.5A ≤ ILOAD ≤ 3A
Circuit of Figure 2
3.168/3.135
3.450/3.482
V(Min)
V(Max)
%
Efficiency
VIN = 12V, ILOAD = 3A
LM2576-5.0, LM2576HV-5.0
Electrical Characteristics
Specifications with standard type face are for TJ = 25˚C, and those with Figure 2 boldface type apply over full Operating Tem-
perature Range.
Symbol
Parameter
Conditions
LM2576-5.0
Units
(Limits)
LM2576HV-5.0
Typ
5.0
5.0
5.0
Limit
(Note 2)
SYSTEM PARAMETERS (Note 3) Test Circuit Figure 2
VOUT
VOUT
VOUT
Output Voltage
VIN = 12V, ILOAD = 0.5A
V
Circuit of Figure 2
4.900
5.100
V(Min)
V(Max)
V
Output Voltage
LM2576
0.5A ≤ ILOAD ≤ 3A,
8V ≤ VIN ≤ 40V
4.800/4.750
5.200/5.250
V(Min)
V(Max)
V
Circuit of Figure 2
0.5A ≤ ILOAD ≤ 3A,
8V ≤ VIN ≤ 60V
Output Voltage
LM2576HV
4.800/4.750
5.225/5.275
V(Min)
V(Max)
Circuit of Figure 2
3
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