LM2576D2T-012G ON Semiconductor, LM2576D2T-012G Datasheet - Page 3
LM2576D2T-012G
Manufacturer Part Number
LM2576D2T-012G
Description
IC REG SW 3A 12V STEPDOWN D2PAK
Manufacturer
ON Semiconductor
Type
Step-Down (Buck)r
Datasheet
1.LM2576D2T-ADJR4G.pdf
(28 pages)
Specifications of LM2576D2T-012G
Internal Switch(s)
Yes
Synchronous Rectifier
No
Number Of Outputs
1
Voltage - Output
12V
Current - Output
3A
Frequency - Switching
52kHz
Voltage - Input
7 ~ 40 V
Operating Temperature
-40°C ~ 125°C
Mounting Type
Surface Mount
Package / Case
D²Pak, TO-263 (5 leads + tab)
Output Voltage
12 V
Output Current
3 A
Input Voltage
4.75 V to 40 V
Switching Frequency
52 KHz
Operating Temperature Range
- 40 C to + 125 C
Mounting Style
SMD/SMT
Duty Cycle (max)
98 %
Lead Free Status / RoHS Status
Lead free / RoHS Compliant
Power - Output
-
Lead Free Status / Rohs Status
Lead free / RoHS Compliant
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1. External components such as the catch diode, inductor, input and output capacitors can affect switching regulator system performance.
2. Tested junction temperature range for the LM2576:
OPERATING RATINGS
specific performance limits. For guaranteed specifications and test conditions, see the Electrical Characteristics.)
SYSTEM PARAMETERS
ELECTRICAL CHARACTERISTICS
for the 12 V version, and V
operating junction temperature range that applies Note 2, unless otherwise noted.)
LM2576−3.3 (Note 1 Test Circuit Figure 15)
LM2576−5 (Note 1 Test Circuit Figure 15)
LM2576−12 (Note 1 Test Circuit Figure 15)
LM2576−15 (Note 1 Test Circuit Figure 15)
LM2576 ADJUSTABLE VERSION (Note 1 Test Circuit Figure 15)
Operating Junction Temperature Range
Supply Voltage
Output Voltage (V
Output Voltage (6.0 V ≤ V
Efficiency (V
Output Voltage (V
Output Voltage (8.0 V ≤ V
Output Voltage (V
Output Voltage (15 V ≤ V
Efficiency (V
Output Voltage (V
Output Voltage (18 V ≤ V
Efficiency (V
Feedback Voltage (V
Feedback Voltage (8.0 V ≤ V
Efficiency (V
T
T
T
T
Efficiency (V
T
T
T
T
T
T
When the LM2576 is used as shown in the Figure 15 test circuit, system performance will be as shown in system parameters section.
J
J
J
J
J
J
J
J
J
J
= −40 to +125°C
= −40 to +125°C
= 25°C
= −40 to +125°C
= 25°C
= −40 to +125°C
= 25°C
= −40 to +125°C
= 25°C
= 25°C
in
in
in
in
in
= 12 V, I
= 12 V, I
= 15 V, I
= 18 V, I
= 12 V, I
in
in
in
in
= 30 V, I
= 12 V, I
= 12 V, I
= 25 V, I
in
Load
= 12 V, I
Load
Load
Load
Load
in
in
in
in
in
(Operating Ratings indicate conditions for which the device is intended to be functional, but do not guarantee
≤ 40 V, 0.5 A ≤ I
≤ 40 V, 0.5 A ≤ I
= 3.0 A)
= 3.0 A)
= 3.0 A, V
= 30 V for the 15 V version. I
≤ 40 V, 0.5 A ≤ I
≤ 40 V, 0.5 A ≤ I
= 3.0 A)
Load
Load
Load
Load
Characteristics
= 3.0 A)
in
≤ 40 V, 0.5 A ≤ I
(Note 1 Test Circuit Figure 15)
Load
= 0.5 A, T
= 0.5 A, T
= 0.5 A, T
= 0.5 A, T
= 0.5 A, V
Rating
out
(Unless otherwise specified, V
= 5.0 V)
J
J
J
J
Load
Load
Load
Load
= 25°C)
= 25°C)
= 25°C)
= 25°C)
out
Load
≤ 3.0 A)
≤ 3.0 A)
≤ 3.0 A)
≤ 3.0 A)
= 5.0 V, T
≤ 3.0 A, V
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Load
T
J
low
= 25°C)
= 500 mA. For typical values T
out
LM2576
= −40°C
= 5.0 V)
3
in
= 12 V for the 3.3 V, 5.0 V, and Adjustable version, V
Symbol
T
V
V
high
V
V
V
V
V
V
V
V
out
out
η
out
out
η
out
out
η
out
out
η
out
out
η
= +125°C
Symbol
3.234
3.168
3.135
14.25
1.193
11.52
11.76
1.217
4.75
11.4
14.4
1.18
Min
14.7
4.8
J
4.9
V
T
−
−
−
−
−
= 25°C, for min/max values T
in
J
1.23
Typ
1.23
3.3
3.3
5.0
5.0
12
15
75
77
12
88
15
88
77
−
−
−
−
−
−40 to +125
Value
40
3.366
3.432
3.465
12.48
15.75
1.267
12.24
1.243
Max
5.25
12.6
15.6
1.28
15.3
5.2
5.1
−
−
−
−
−
J
is the
in
= 25 V
Unit
Unit
°C
V
V
V
%
%
%
%
%
V
V
V
V
V
V
V
V