LM2574N-5G ON Semiconductor, LM2574N-5G Datasheet - Page 4

• Manufacturer Part Number: LM2574N-5G
• Description: IC REG SW 0.5A 5V STEPDOWN 8-DIP
• Manufacturer: ON Semiconductor
• Type: Step-Down (Buck)r

Specifications of LM2574N-5G

• Internal Switch(s): Yes
• Synchronous Rectifier: No
• Number Of Outputs: 1
• Voltage - Output: 5V
• Current - Output: 500mA
• Frequency - Switching: 52kHz
• Voltage - Input: 4.75 ~ 40 V
• Operating Temperature: -40°C ~ 125°C
• Mounting Type: Through Hole
• Package / Case: 8-DIP (0.300", 7.62mm)
• Output Voltage: 5 V
• Output Current: 0.5 A
• Input Voltage: 4.75 V to 40 V
• Switching Frequency: 52 KHz
• Operating Temperature Range: - 40 C to + 125 C
• Mounting Style: Through Hole
• Duty Cycle (max): 98 %
• Primary Input Voltage: 12V
• No. Of Outputs: 1
• No. Of Pins: 8
• Filter Terminals: DIP
• Input Voltage Primary Max: 40V
• Rohs Compliant: Yes
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant
• Power - Output: -
• Lead Free Status / Rohs Status: Lead free / RoHS Compliant
• Other names: LM2574N-5GOS

3. External components such as the catch diode, inductor, input and output capacitors can affect the switching regulator system performance.
4. Tested junction temperature range for the LM2574, NCV2574: T
5. The oscillator frequency reduces to approximately 18 kHz in the event of an output short or an overload which causes the regulated output
6. Output (Pin 2) sourcing current. No diode, inductor or capacitor connected to the output pin.
7. Feedback (Pin 4) removed from output and connected to 0 V.
8. Feedback (Pin 4) removed from output and connected to 12 V for the Adjustable, 3.3 V, and 5.0 V versions, and 25 V for the 12 V and 15 V
9. V
SYSTEM PARAMETERS
ELECTRICAL CHARACTERISTICS (continued)
Adjustable version, V
min/max values T
ALL OUTPUT VOLTAGE VERSIONS
Feedback Bias Current V
Oscillator Frequency (Note 5)
Saturation Voltage (I
Max Duty Cycle (“on”) (Note 7)
Current Limit Peak Current (Notes 5 and 6)
Output Leakage Current (Notes 8 and 9), T
Quiescent Current (Note 8)
Standby Quiescent Current (ON/OFF Pin = 5.0 V (“off”))
ON/OFF Pin Logic Input Level
ON/OFF P
V
Nominal Output Voltage
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.
voltage to drop approximately 40% from the nominal output voltage. This self protection feature lowers the average power dissipation of the
IC by lowering the minimum duty cycle from 5% down to approximately 2%.
versions, to force the output transistor OFF.
T
T
T
T
T
T
T
T
T
Output = 0 V
Output = − 1.0 V
T
T
T
T
T
T
ON/OFF P
ON/OFF P
out
in
T
T
J
J
J
J
J
J
J
J
J
J
J
J
J
J
J
J
J
= 40 V.
= −40 to +125°C
= −40 to +125°C
= −40 to +125°C
= −40 to +125°C
= −40 to +125°C
= −40 to +125°C
= −40 to +125°C
= 25°C
= 25°C
= 0 to +125°C
= 25°C
= 25°C
= 25°C
= 25°C
= 25°C
= 0 V
= 25°C
= −40 to +125°C
in
Input Current
in
in
= 5.0 V (“off”), T
= 0 V (“on”), T
J
is the operating junction temperature range that applies [Note 4], unless otherwise noted).
in
out
= 25 V for the 12 V version, V
= 0.5 A, [Note 6])
out
Characteristic
= 5.0 V (Adjustable Version Only)
J
= 25°C
J
([Note 3] Test Circuit Figure 16)
= 25°C
J
= 25°C
in
= 30 V for the 15 V version. I
LM2574, NCV2574
(Unless otherwise specified, V
http://onsemi.com
low
4
= −40°C T
Symbol
V
I
DC
V
I
V
stby
I
f
I
I
I
CL
I
IH
sat
IL
O
Q
b
L
IH
IL
high
Load
= +125°C.
in
= 100 mA. For typical values T
= 12 V for the 3.3 V, 5.0 V, and
0.65
Min
0.7
2.2
2.4
47
42
93
−
−
−
−
−
−
−
−
−
−
−
−
−
−
−
Typ
1.0
1.0
0.6
5.0
1.4
1.2
25
52
52
98
10
60
15
−
−
−
−
−
−
−
−
0
J
Max
100
200
200
400
1.2
1.4
1.6
1.8
2.0
9.0
1.0
0.8
5.0
58
63
30
30
11
= 25°C, for
−
−
−
−
Unit
kHz
mA
mA
nA
mA
mA
%
V
A
V