LM2574-ADJ, LM2574HV-ADJ
Electrical Characteristics
(Continued)
Specifications with standard type face are for T
J
= 25˚C, and those with
boldface type
apply over
full Operating Tempera-
ture Range.
Unless otherwise specified, V
IN
= 12V, I
LOAD
= 100 mA.
Symbol
Parameter
Conditions
Typ
SYSTEM PARAMETERS
(Note 3) Test Circuit
Figure 2
V
FB
Feedback Voltage
LM2574
V
FB
Feedback Voltage
LM2574HV
η
Efficiency
7V
≤
V
IN
≤
40V, 0.1A
≤
I
LOAD
≤
0.5A
V
OUT
Programmed for 5V. Circuit of
Figure 2
7V
≤
V
IN
≤
60V, 0.1A
≤
I
LOAD
≤
0.5A
V
OUT
Programmed for 5V. Circuit of
Figure 2
V
IN
= 12V, V
OUT
= 5V, I
LOAD
= 0.5A
77
1.230
1.193/1.180
1.273/1.286
V(Min)
V(Max)
%
1.230
1.193/1.180
1.267/1.280
V
V(Min)
V(Max)
LM2574-ADJ
LM2574HV-ADJ
Limit
(Note 2)
Units
(Limits)
All Output Voltage Versions
Electrical Characteristics
Specifications with standard type face are for T
J
= 25˚C, and those with
boldface type
apply over
full Operating Tempera-
ture Range.
Unless otherwise specified, V
IN
= 12V for the 3.3V, 5V, and Adjustable version, V
IN
= 25V for the 12V version,
and V
IN
= 30V for the 15V version. I
LOAD
= 100 mA.
Symbol
Parameter
Conditions
Typ
DEVICE PARAMETERS
I
b
f
O
Feedback Bias
Current
Oscillator Frequency
Adjustable Version Only, V
OUT
= 5V
(see Note 10)
50
52
47/42
58/63
V
SAT
DC
Saturation Voltage
Max Duty Cycle
(ON)
Current Limit
I
OUT
= 0.5A (Note 4)
(Note 5)
0.9
1.2/1.4
98
93
I
CL
Peak Current, (Notes 4, 10)
1.0
0.7/0.65
1.6/1.8
I
L
Output Leakage
Current
I
Q
I
STBY
θ
JA
θ
JA
θ
JA
θ
JA
Quiescent Current
Standby Quiescent
Current
Thermal Resistance
N Package, Junction to Ambient (Note 8)
N Package, Junction to Ambient (Note 9)
M Package, Junction to Ambient (Note 8)
M Package, Junction to Ambient (Note 9)
92
72
102
78
˚C/W
(Note 6)
ON /OFF Pin = 5V (OFF)
(Notes 6, 7)
Output = 0V
Output = −1V
Output = −1V
5
10
50
200
2
7.5
30
100/500
nA
kHz
kHz(Min)
kHz(Max)
V
V(max)
%
%(Min)
A
A(Min)
A(Max)
mA(Max)
mA
mA(Max)
mA
mA(Max)
µA
µA(Max)
LM2574-XX
LM2574HV-XX
Limit
(Note 2)
Units
(Limits)
5
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