LM2574N-ADJG ON Semiconductor, LM2574N-ADJG Datasheet - Page 6

• Manufacturer Part Number: LM2574N-ADJG
• Description: IC REG SW 0.5A ADJ OUTPUT 8-DIP
• Manufacturer: ON Semiconductor
• Type: Step-Down (Buck)r

Specifications of LM2574N-ADJG

• 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: 4.75 ~ 40 V
• Operating Temperature: -40°C ~ 125°C
• Mounting Type: Through Hole
• Package / Case: 8-DIP (0.300", 7.62mm)
• Output Voltage: 1.23 V to 37 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 %
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant
• Power - Output: -
• Lead Free Status / Rohs Status: Lead free / RoHS Compliant

B
C
A
−2.0
−4.0
−6.0
−8.0
5.0
4.5
4.0
3.5
3.0
2.5
2.0
1.5
1.0
0.5
8.0
6.0
4.0
2.0
10
20 mV
0
0
0.6 A
0.4 A
0.2 A
−50
−50
20 V
10 V
Figure 12. Continuous Mode Switching Waveforms
AC
0
0
V
V
Normalized at 25°C
out
A: Output Pin Voltage, 10 V/DIV.
B: Inductor Current, 0.2 A/DIV.
C: Output Ripple Voltage, 20 mV/DIV, AC−Coupled
in
V
I
Figure 10. Minimum Operating Voltage
Load
−25
−25
in
= 12 V
= 5.0 V, 500 mA Load Current, L = 330 mH
= 1.23 V
= 100 mA
Figure 8. Oscillator Frequency
TYPICAL PERFORMANCE CHARACTERISTICS
T
T
J
J
, JUNCTION TEMPERATURE (°C)
0
0
, JUNCTION TEMPERATURE (°C)
25
25
5 ms/DIV
Adjustable Version Only
50
50
75
75
100
100
LM2574, NCV2574
http://onsemi.com
125
125
6
B
C
A
Figure 13. Discontinuous Mode Switching Waveforms
−100
100
−20
−40
−60
−80
1.3
1.2
1.1
1.0
0.9
0.8
0.7
0.6
0.5
0.4
0.3
80
60
40
20
0
20 mV
−50
0.4 A
0.2 A
20 V
10 V
V
0
AC
out
0
0
(Circuit of Figure 16) (continued)
−40°C
125°C
= 5.0 V, 100 mA Load Current, L = 100 mH
A: Output Pin Voltage, 10 V/DIV.
B: Inductor Current, 0.2 A/DIV.
C: Output Ripple Voltage, 20 mV/DIV, AC−Coupled
25°C
−25
Figure 9. Switch Saturation Voltage
Figure 11. Feedback Pin Current
0.1
T
J
, JUNCTION TEMPERATURE (°C)
0
SWITCH CURRENT (A)
0.2
25
5 ms/DIV
Adjustable Version Only
50
0.3
75
0.4
100
125
0.5