LM2576, LM2576HV
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SNVS107C –JUNE 1999–REVISED APRIL 2013
These devices have limited built-in ESD protection. The leads should be shorted together or the device placed in conductive foam
during storage or handling to prevent electrostatic damage to the MOS gates.
(1)(2)
ABSOLUTE MAXIMUM RATINGS
Maximum Supply Voltage
LM2576
45V
63V
LM2576HV
ON /OFF Pin Input Voltage
Output Voltage to Ground
Power Dissipation
−0.3V ≤ V ≤ +VIN
−1V
(Steady State)
Internally Limited
−65°C to +150°C
150°C
Storage Temperature Range
Maximum Junction Temperature
Minimum ESD Rating
(C = 100 pF, R = 1.5 kΩ)
2 kV
Lead Temperature
(Soldering, 10 Seconds)
260°C
(1) Absolute Maximum Ratings indicate limits beyond which damage to the device may occur. Operating Ratings indicate conditions for
which the device is intended to be functional, but do not ensured specific performance limits. For ensured specifications and test
conditions, see ELECTRICAL CHARACTERISTICS ALL OUTPUT VOLTAGE VERSIONS.
(2) If Military/Aerospace specified devices are required, please contact the TI Sales Office/ Distributors for availability and specifications.
OPERATING RATINGS
Temperature Range
LM2576/LM2576HV
LM2576
−40°C ≤ TJ ≤ +125°C
Supply Voltage
40V
60V
LM2576HV
ELECTRICAL CHARACTERISTICS LM2576-3.3, LM2576HV-3.3
Specifications with standard type face are for TJ = 25°C, and those with boldface type apply over full Operating Temperature
Range.
LM2576-3.3
Units
LM2576HV-3.3
Symbol
Parameter
Conditions
(Limits)
(1)
Typ
Limit
SYSTEM PARAMETERS Test Circuit Figure 21 and Figure 22(2)
VOUT
VOUT
VOUT
η
Output Voltage
VIN = 12V, ILOAD = 0.5A
Circuit of Figure 21 and Figure 22
3.3
3.3
3.3
75
V
3.234
3.366
V(Min)
V(Max)
Output Voltage
LM2576
6V ≤ VIN ≤ 40V, 0.5A ≤ ILOAD ≤ 3A
Circuit of Figure 21 and Figure 22
V
3.168/3.135
3.432/3.465
V(Min)
V(Max)
Output Voltage
LM2576HV
6V ≤ VIN ≤ 60V, 0.5A ≤ ILOAD ≤ 3A
Circuit of Figure 21 and Figure 22
V
3.168/3.135
3.450/3.482
V(Min)
V(Max)
Efficiency
VIN = 12V, ILOAD = 3A
%
(1) All limits specified at room temperature (standard type face) and at temperature extremes (bold type face). All room temperature limits
are 100% production tested. All limits at temperature extremes are specified via correlation using standard Statistical Quality Control
(SQC) methods.
(2) External components such as the catch diode, inductor, input and output capacitors can affect switching regulator system performance.
When the LM2576/LM2576HV is used as shown in Figure 21 and Figure 22, system performance will be as shown in ELECTRICAL
CHARACTERISTICS ALL OUTPUT VOLTAGE VERSIONS.
Copyright © 1999–2013, Texas Instruments Incorporated
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