lm2574dw ON Semiconductor, lm2574dw Datasheet - Page 3

• Manufacturer Part Number: lm2574dw
• Description: 0.5 A, Adjustable Output Voltage, Stepdown Switching Regulator
• Manufacturer: ON Semiconductor

1. External components such as the catch diode, inductor, input and output capacitors can affect the switching regulator system performance.
2. Tested junction temperature range for the LM2574, NCV2574: T
OPERATING RATINGS
specific performance limits. For guaranteed specifications and test conditions, see the Electrical Characteristics).
SYSTEM PARAMETERS
ELECTRICAL CHARACTERISTICS
version, V
T
LM2574−3.3 ([Note 1] Test Circuit Figure 16)
LM2574−5 ([Note 1] Test Circuit Figure 16)
LM2574−12 ([Note 1] Test Circuit Figure 16)
LM2574−15 ([Note 1] Test Circuit Figure 16)
LM2574 ADJUSTABLE VERSION ([Note 1] Test Circuit Figure 16)
Operating Junction Temperature Range
Supply Voltage
Output Voltage (V
Output Voltage (4.75 V ≤ V
Efficiency (V
Output Voltage (V
Output Voltage (7.0 V ≤ V
Efficiency (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 7.0 V ≤ V
Efficiency (V
J
V
When the LM2574 is used as shown in the Figure 16 test circuit, the system performance will be as shown in the system parameters section
of the Electrical Characteristics.
is the operating junction temperature range that applies [Note 2], unless otherwise noted).
T
T
T
T
T
T
T
T
T
T
J
J
J
J
J
J
J
J
J
J
= 25°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
= −40 to +125°C
in
= 25 V for the 12 V version, V
in
in
in
in
in
= 12 V, I
= 12 V, I
= 15 V, I
= 18 V, I
= 12 V, I
in
in
in
in
= 12 V, I
= 12 V, I
= 25 V, I
= 30 V, I
in
= 12 V, I
Load
Load
Load
Load
Load
in
in
in
(Operating Ratings indicate conditions for which the device is intended to be functional, but do not guarantee
in
Characteristic
≤ 40 V, 0.1 A ≤ I
< 40 V, 0.1 A < I
= 0.5 A)
= 0.5 A)
= 0.5 A)
= 0.5 A)
= 0.5 A, V
≤ 40 V, 0.1 A ≤ I
in
Load
Load
Load
Load
≤ 40 V, 0.1 A ≤ I
≤ 40 V, 0.1 A ≤ I
Load
([Note 1] Test Circuit Figure 16)
= 100 mA, T
= 100 mA, T
= 100 mA, T
= 100 mA, T
Rating
= 100 mA, V
out
in
= 5.0 V)
(Unless otherwise specified, V
= 30 V for the 15 V version. I
Load
Load
Load
Load
J
J
J
J
Load
= 25°C)
= 25°C)
= 25°C)
= 25°C)
≤ 0.5 A)
out
< 0.5 A)
≤ 0.5 A)
≤ 0.5 A)
≤ 0.5 A, V
= 5.0 V, T
LM2574, NCV2574
http://onsemi.com
J
out
= 25°C
= 5.0
low
3
= −40°C T
Load
in
= 12 V for the 3.3 V, 5.0 V, and Adjustable
Symbol
= 100 mA. For typical values T
V
V
V
V
V
V
V
V
V
V
FBT
η
η
η
η
η
out
out
out
out
out
out
out
out
FB
high
Symbol
= +125°C.
V
T
in
J
3.234
3.168
3.135
11.76
11.52
14.25
1.217
1.193
4.75
11.4
14.7
14.4
1.18
Min
4.9
4.8
−
−
−
−
−
−40 to +125
1.23
1.23
Value
Typ
3.3
3.3
5.0
5.0
12
15
72
77
10
88
15
88
77
−
−
J
40
= 25°C, for min/max values
3.366
3.432
3.465
12.24
12.48
15.75
1.243
1.267
Max
5.25
12.6
15.3
15.6
1.28
5.1
5.2
−
−
−
−
−
Unit
°C
V
Unit
%
%
%
%
%
V
V
V
V
V
V
V
V
V
V