LM2576
OPERATING RATINGS (Operating Ratings indicate conditions for which the device is
intended to be functional, but do not guarantee specific performance limits. For guaranteed
specifications and test conditions, see the Electrical Characteristics.)
Rating
Operating Junction Temperature Range
Supply Voltage
Symbol
Value
–40 to +125
40
Unit
°C
T
J
V
in
V
SYSTEM PARAMETERS ([Note 1] Test Circuit Figure 15)
ELECTRICAL CHARACTERISTICS (Unless otherwise specified, V = 12 V for the 3.3 V, 5.0 V, and Adjustable version, V = 25 V for
in in
the 12 V version, and V = 30 V for the 15 V version. I
junction temperature range that applies [Note 2], unless otherwise noted.)
= 500 mA. For typical values T = 25°C, for min/max values T is the operating
in
Load
J
J
Characteristics
Symbol
Min
Typ
Max
Unit
LM2576–3.3 ([Note 1] Test Circuit Figure 15)
Output Voltage (V = 12 V, I
in
= 0.5 A, T = 25°C)
V
out
3.234
3.3
3.366
V
V
Load
J
Output Voltage (6.0 V ≤ V ≤ 40 V, 0.5 A ≤ I
in
≤ 3.0 A)
V
out
Load
T = 25°C
T = –40 to +125°C
J
3.168
3.135
3.3
–
3.432
3.465
J
Efficiency (V = 12 V, I
in
= 3.0 A)
η
–
75
–
%
Load
LM2576–5 ([Note 1] Test Circuit Figure 15)
Output Voltage (V = 12 V, I = 0.5 A, T = 25°C)
V
out
4.9
5.0
5.1
V
V
in
Load
J
Output Voltage (8.0 V ≤ V ≤ 40 V, 0.5 A ≤ I
≤ 3.0 A)
V
out
in
Load
T = 25°C
T = –40 to +125°C
J
4.8
4.75
5.0
–
5.2
5.25
J
Efficiency (V = 12 V, I
in
= 3.0 A)
η
–
77
–
%
Load
LM2576–12 ([Note 1] Test Circuit Figure 15)
Output Voltage (V = 25 V, I = 0.5 A, T = 25°C)
V
out
11.76
12
12.24
V
V
in
Load
J
Output Voltage (15 V ≤ V ≤ 40 V, 0.5 A ≤ I
≤ 3.0 A)
V
out
in
Load
T = 25°C
T = –40 to +125°C
J
11.52
11.4
12
–
12.48
12.6
J
Efficiency (V = 15 V, I
in
= 3.0 A)
η
–
88
–
%
Load
LM2576–15 ([Note 1] Test Circuit Figure 15)
Output Voltage (V = 30 V, I = 0.5 A, T = 25°C)
V
out
14.7
15
15.3
V
V
in
Load
J
Output Voltage (18 V ≤ V ≤ 40 V, 0.5 A ≤ I
≤ 3.0 A)
V
out
in
Load
T = 25°C
T = –40 to +125°C
J
14.4
14.25
15
–
15.6
15.75
J
Efficiency (V = 18 V, I
in
= 3.0 A)
η
–
88
–
%
Load
LM2576 ADJUSTABLE VERSION ([Note 1] Test Circuit Figure 15)
Feedback Voltage (V = 12 V, I
in
= 0.5 A, V
= 5.0 V, T = 25°C)
V
out
1.217
1.23
1.243
V
V
Load
out
J
Feedback Voltage (8.0 V ≤ V ≤ 40 V, 0.5 A ≤ I
in
≤ 3.0 A, V
out
= 5.0 V)
V
out
Load
T = 25°C
T = –40 to +125°C
J
1.193
1.18
1.23
–
1.267
1.28
J
Efficiency (V = 12 V, I
in
= 3.0 A, V
out
= 5.0 V)
η
–
77
–
%
Load
NOTES: 1. External components such as the catch diode, inductor, input and output capacitors can affect switching regulator system performance. When the
LM2576 is used as shown in the Figure 15 test circuit, system performance will be as shown in system parameters section.
2. Tested junction temperature range for the LM2576:
T
= –40°C
T
= +125°C
low
high
3
MOTOROLA ANALOG IC DEVICE DATA
MOTOROLA [ MOTOROLA ]
