3A Step-Down Switching Regulator. Pin-pin replacement of UC2576, MIC2576
ABSOLUTE MAXIMUM RATINGS (Note 1)
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Maximum Supply Voltage
LM2576 45V
LM2576HV 63V
ON /OFF Pin Input Voltage -0.3V ≤ V ≤ +VIN
Output Voltage to Ground (Steady State) -1V
Power Dissipation Internally Limited
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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 Seconds) 260°C
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OPERATING RATINGS
Temperature Range
LM2576/LM2576HV -40°C ≤ TJ ≤ +125°C
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Supply Voltage
LM2576 40V
LM2576HV 60V
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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.
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Symbol
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Parameter
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Conditions
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LM2576-3.3
LM2576HV-3.3
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Units
(Limits)
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Type
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Limit
(Note 2)
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SYSTEM PARAMETERS (Note 3) Test Circuit Figure 2
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VOUT
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Output Voltage
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VIN= 12V, ILOAD= 0.5A
Circuit of Figure 2
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3.3
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3.234
3.366
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V
V(Min)
V(Max)
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VOUT
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Output Voltage
LM2576
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6V ≤VIN≤ 40V, 0.5A ≤ ILOAD≤ 3A
Circuit of Figure 2
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3.3
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3.168/3.135
3.432/3.465
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V
V(Min)
V(Max)
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VOUT
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Output Voltage
LM2576HV
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6V ≤VIN≤ 60V, 0.5A ≤ ILOAD≤ 3A
Circuit of Figure 2
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3.3
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3.168/3.135
3.450/3.482
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V
V(Min)
V(Max)
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η
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Efficiency
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VIN= 12V, ILOAD= 3A
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75
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%
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LM2576-5.0, LM2576HV-5.0 ELECTRICAL CHARACTERISTICS
Specifications with standard type face are for TJ = 25°C, and those with boldface type apply over full Operating Temperature Range.
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Symbol
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Parameter
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Conditions
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LM2576-5.0
LM2576HV-5.0
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Units
(Limits)
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Type
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Limit
(Note 2)
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SYSTEM PARAMETERS (Note 3) Test Circuit Figure 2
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VOUT
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Output Voltage
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VIN= 12V, ILOAD= 0.5A
Circuit of Figure 2
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5.0
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4.900
5.100
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V
V(Min)
V(Max)
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VOUT
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Output Voltage
LM2576
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8V ≤VIN≤ 40V, 0.5A ≤ ILOAD≤ 3A
Circuit of Figure 2
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5.0
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4.800/4.750
5.200/5.250
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V
V(Min)
V(Max)
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VOUT
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Output Voltage
LM2576HV
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8V ≤VIN≤ 60V, 0.5A ≤ ILOAD≤ 3A
Circuit of Figure 2
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5.0
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4.800/4.750
5.225/5.275
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V
V(Min)
V(Max)
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η
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Efficiency
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VIN= 12V, ILOAD= 3A
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77
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%
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LM2576-12, LM2576HV-12 ELECTRICAL CHARACTERISTICS
Specifications with standard type face are for TJ = 25°C, and those with boldface type apply over full Operating Temperature Range.
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Symbol
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Parameter
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Conditions
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LM2576-12
LM2576HV-12
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Units
(Limits)
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Type
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Limit
(Note 2)
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SYSTEM PARAMETERS (Note 3) Test Circuit Figure 2
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VOUT
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Output Voltage
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VIN= 25V, ILOAD= 0.5A
Circuit of Figure 2
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12
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11.76
12.24
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V
V(Min)
V(Max)
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VOUT
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Output Voltage
LM2576
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15V ≤VIN≤ 40V, 0.5A ≤ ILOAD≤ 3A
Circuit of Figure 2
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12
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11.52/11.40
12.48/12.60
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V
V(Min)
V(Max)
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VOUT
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Output Voltage
LM2576HV
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15V ≤VIN≤ 60V, 0.5A ≤ ILOAD≤ 3A
Circuit of Figure 2
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12
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11.52/11.40
12.54/12.66
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V
V(Min)
V(Max)
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η
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Efficiency
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VIN= 15V, ILOAD= 3A
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88
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%
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LM2576-15, LM2576HV-15 ELECTRICAL CHARACTERISTICS
Specifications with standard type face are for TJ = 25°C, and those with boldface type apply over full Operating Temperature Range.
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Symbol
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Parameter
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Conditions
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LM2576-15
LM2576HV-15
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Units
(Limits)
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Type
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Limit
(Note 2)
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SYSTEM PARAMETERS (Note 3) Test Circuit Figure 2
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VOUT
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Output Voltage
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VIN= 25V, ILOAD= 0.5A
Circuit of Figure 2
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15
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14.70
15.30
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V
V(Min)
V(Max)
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VOUT
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Output Voltage
LM2576
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18V ≤VIN≤ 40V, 0.5A ≤ ILOAD≤ 3A
Circuit of Figure 2
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15
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14.40/14.25
15.60/15.75
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V
V(Min)
V(Max)
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VOUT
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Output Voltage
LM2576HV
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18V ≤VIN≤ 60V, 0.5A ≤ ILOAD≤ 3A
Circuit of Figure 2
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15
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14.40/14.25
15.68/15.83
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V
V(Min)
V(Max)
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η
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Efficiency
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VIN= 18V, ILOAD= 3A
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88
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%
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LM2576-ADJ, LM2576HV-ADJ ELECTRICAL CHARACTERISTICS
Specifications with standard type face are for TJ = 25°C, and those with boldface type apply over full Operating Temperature Range.
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Symbol
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Parameter
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Conditions
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LM2576-ADJ
LM2576HV-ADJ
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Units
(Limits)
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Type
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Limit
(Note 2)
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SYSTEM PARAMETERS (Note 3) Test Circuit Figure 2
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VOUT
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Feedback Voltage
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VIN= 12V, ILOAD= 0.5A
VOUT= 5V
Circuit of Figure 2
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1.230
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1.217
1.243
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V
V(Min)
V(Max)
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VOUT
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Feedback Voltage
LM2576
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8V ≤VIN≤ 40V, 0.5A ≤ ILOAD≤ 3A
VOUT= 5V
Circuit of Figure 2
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1.230
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1.193/1.180
1.267/1.280
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V
V(Min)
V(Max)
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VOUT
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Feedback Voltage
LM2576HV
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8V ≤VIN≤ 60V, 0.5A ≤ ILOAD≤ 3A
VOUT= 5V
Circuit of Figure 2
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1.230
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1.193/1.180
1.273/1.286
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V
V(Min)
V(Max)
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η
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Efficiency
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VIN= 12V, ILOAD= 3A, VOUT= 5V
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77
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%
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ALL OUTPUT VOLTAGE VERSIONS ELECTRICAL CHARACTERISTICS
Specifications with standard type face are for TJ = 25°C, and those with boldface type apply over full Operating Temperature Range. Unless otherwise specified, VIN= 12V for the 3.3V, 5V, and Adjustable version, VIN= 25V for the 12V version, and VIN= 30V for the 15V version. ILOAD= 500 mA.
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Symbol
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Parameter
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Conditions
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LM2576-XX
LM2576HV-XX
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Units
(Limits)
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Type
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Limit
(Note 2)
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DEVICE PARAMETERS
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Ib
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Feedback Bias Current
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VOUT= 5V (Adjustable Version Only)
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50
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100/500
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nA
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fO
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Oscillator Frequency
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(Note 11)
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52
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47/42
58/63
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kHz
kHz(Min)
kHz(Max)
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VSAT
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Saturation Voltage
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IOUT = 3A (Note 4)
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1.4
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1.8/2.0
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V
V(Max)
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DC
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Max Duty Cycle (ON)
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(Note 5)
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