LM2574M-ADJ/NOPB National Semiconductor, LM2574M-ADJ/NOPB Datasheet - Page 6
![IC REG SW ADJ 500MA STPDN 14SOIC](/photos/6/60/66091/pkg_m14b_sml.jpg)
LM2574M-ADJ/NOPB
Manufacturer Part Number
LM2574M-ADJ/NOPB
Description
IC REG SW ADJ 500MA STPDN 14SOIC
Manufacturer
National Semiconductor
Series
SIMPLE SWITCHER®r
Type
Step-Down (Buck)r
Specifications of LM2574M-ADJ/NOPB
Internal Switch(s)
Yes
Synchronous Rectifier
No
Number Of Outputs
1
Voltage - Output
1.23 ~ 37 V
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
Primary Input Voltage
40V
No. Of Outputs
1
Output Voltage
37V
Output Current
500mA
No. Of Pins
14
Operating Temperature Range
-40°C To +125°C
Current Rating
0.5A
Filter Terminals
SMD
Rohs Compliant
Yes
Lead Free Status / RoHS Status
Lead free / RoHS Compliant
Other names
*LM2574M-ADJ
*LM2574M-ADJ/NOPB
LM2574M-ADJ
*LM2574M-ADJ/NOPB
LM2574M-ADJ
www.national.com
V
Symbol
LM1117I Electrical Characteristics
Typicals and limits appearing in normal type apply for T
tion temperature range for operation, −40˚C to 125˚C.
Note 1: Absolute Maximum Ratings indicate limits beyond which damage to the device may occur. Operating Ratings indicate conditions for which the device is
intended to be functional, but specific performance is not guaranteed. For guaranteed specifications and the test conditions, see the Electrical Characteristics.
∆V
∆V
IN
V
V
I
LIMIT
-V
OUT
REF
OUT
OUT
OUT
Reference Voltage
Output Voltage
Line Regulation
(Note 6)
Load Regulation
(Note 6)
Dropout Voltage
(Note 7)
Current Limit
Minimum Load
Current (Note 8)
Quiescent Current
Thermal Regulation
Ripple Regulation
Adjust Pin Current
Adjust Pin Current
Change
Temperature Stability
Long Term Stability
RMS Output Noise
Thermal Resistance
Junction-to-Case
Thermal Resistance
Junction-to-Ambient
No air flow)
Parameter
LM1117I-ADJ
I
10mA ≤ I
≤ 10V
LM1117I-3.3
I
0 ≤ I
LM1117I-5.0
I
0 ≤ I
LM1117I-ADJ
I
LM1117I-3.3
I
LM1117I-5.0
I
LM1117I-ADJ
V
LM1117I-3.3
V
LM1117I-5.0
V
I
I
I
V
LM1117I-ADJ
V
LM1117I-3.3
V
LM1117I-5.0
V
T
f
= 1V
10 ≤ I
1.4V ≤ V
T
(% of V
3-Lead SOT-223
3-Lead TO-252
3-Lead SOT-223 (No heat sink)
3-Lead TO-252 (No heat sink)(Note 9)
8-Lead LLP(Note 10)
OUT
OUT
OUT
OUT
OUT
OUT
OUT
OUT
OUT
RIPPLE
A
A
IN
IN
IN
IN
IN
IN
IN
-V
-V
= 25˚C, 30ms Pulse
= 125˚C, 1000Hrs
= 4.75V, 0 ≤ I
= 6.5V, 0 ≤ I
= 15V
≤ 15V
≤ 15V
OUT
OUT
PP
= 10mA, V
= 10mA, V
= 10mA, V
= 10mA, 1.5V ≤ V
= 0mA, 4.75V ≤ V
= 0mA, 6.5V ≤ V
= 100mA
= 500mA
= 800mA
OUT
OUT
OUT
OUT
=1 20Hz, V
IN
≤ 800mA, 4.75V ≤ V
≤ 800mA, 6.5V ≤ V
OUT
≤ 800mA,
= 3V, 10 ≤ I
= 5V, T
-V
), 10Hz ≤ f ≤10kHz
OUT
≤ 800mA, 1.4V ≤ V
Conditions
IN
IN
IN
OUT
≤ 10V
J
-V
OUT
= 5V, T
= 7V, T
= 25˚C
IN
OUT
J
-V
≤ 800mA
IN
OUT
= 25˚C. Limits appearing in Boldface type apply over the entire junc-
≤ 800mA
OUT
IN
IN
= 2V, T
≤ 15V
-V
≤ 15V
J
J
≤ 800mA
OUT
= 25˚C
= 25˚C
= 3V V
6
IN
IN
≤ 12V
≤ 13.75V
J
≤ 10V
IN
= 25˚C
RIPPLE
-V
OUT
(Note 5)
1.238
1.200
3.267
3.168
4.950
4.800
Min
800
60
(Note 4)
1.250
1.250
3.300
3.300
5.000
5.000
0.035
0.003
1200
1.10
1.15
1.20
0.01
15.0
Typ
136
0.2
1.7
0.2
0.5
0.3
75
60
10
92
40
1
1
1
1
5
5
(Note 5)
1.262
1.290
3.333
3.432
5.050
5.200
1500
Max
1.30
1.35
1.40
120
0.3
0.5
0.1
10
15
15
20
15
15
10
5
Units
˚C/W
˚C/W
˚C/W
˚C/W
˚C/W
%/W
mV
mV
mV
mV
mA
mA
mA
mA
dB
µA
µA
%
%
%
%
%
V
V
V
V
V
V
V
V
V