LM2574HVN-ADJ/NOPB National Semiconductor, LM2574HVN-ADJ/NOPB Datasheet - Page 5
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LM2574HVN-ADJ/NOPB
Manufacturer Part Number
LM2574HVN-ADJ/NOPB
Description
IC REG SIMPLE SWITCHER 8-DIP
Manufacturer
National Semiconductor
Series
SIMPLE SWITCHER®r
Type
Step-Down (Buck)r
Datasheet
1.LM2574MX-ADJNOPB.pdf
(24 pages)
Specifications of LM2574HVN-ADJ/NOPB
Internal Switch(s)
Yes
Synchronous Rectifier
No
Number Of Outputs
1
Voltage - Output
1.23 ~ 57 V
Current - Output
500mA
Frequency - Switching
52kHz
Voltage - Input
4 ~ 60 V
Operating Temperature
-40°C ~ 125°C
Mounting Type
Through Hole
Package / Case
8-DIP (0.300", 7.62mm)
Power - Output
750mW
Primary Input Voltage
60V
No. Of Outputs
1
Output Voltage
57V
Output Current
500mA
No. Of Pins
8
Operating Temperature Range
-40°C To +125°C
Msl
MSL 1 - Unlimited
Supply Voltage Range
4V To 60V
Rohs Compliant
Yes
Input Voltage Primary Max
60V
Lead Free Status / RoHS Status
Lead free / RoHS Compliant
Other names
*LM2574HVN-ADJ
*LM2574HVN-ADJ/NOPB
LM2574HVN-ADJ
*LM2574HVN-ADJ/NOPB
LM2574HVN-ADJ
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
www.national.com
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