LM2574M-12/NOPB National Semiconductor, LM2574M-12/NOPB Datasheet - Page 5

• Manufacturer Part Number: LM2574M-12/NOPB
• Description: IC REG SIMPLE SWITCHER 14-SOIC
• Manufacturer: National Semiconductor
• Series: SIMPLE SWITCHER®r
• Type: Step-Down (Buck)r

Specifications of LM2574M-12/NOPB

• Internal Switch(s): Yes
• Synchronous Rectifier: No
• Number Of Outputs: 1
• Voltage - Output: 12V
• Current - Output: 500mA
• Frequency - Switching: 52kHz
• Voltage - Input: 4 ~ 40 V
• Operating Temperature: -40°C ~ 125°C
• Mounting Type: Surface Mount
• Package / Case: 14-SOIC (7.5mm Width)
• Power - Output: 750mW
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant
• Other names: *LM2574M-12; *LM2574M-12/NOPB; LM2574M-12

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