LM2574HVN-ADJ National Semiconductor, LM2574HVN-ADJ Datasheet - Page 8

• Manufacturer Part Number: LM2574HVN-ADJ
• Description: IC, STEP-DOWN REGULATOR, 8-DIP
• Manufacturer: National Semiconductor

Specifications of LM2574HVN-ADJ

• 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
• Supply Voltage Range: 4V To 60V
• Lead Free Status / RoHS Status: Contains lead / RoHS non-compliant

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Typical Performance Characteristics
Feedback
Pin Current
Continuous Mode Switching Waveforms
V
Notes:
A: Output Pin Voltage, 10V/div
B: Inductor Current, 0.2 A/div
C: Output Ripple Voltage, 20 mV/div,
AC-Coupled
Horizontal Time Base: 5 µs/div
500 mA Load Transient Response for Continuous
Mode Operation. L = 330 µH, C
Notes:
A: Output Voltage, 50 mV/div.
AC Coupled
B: 100 mA to 500 mA Load Pulse
Horizontal Time Base: 200 µs/div
OUT
= 5V, 500 mA Load Current, L = 330 µH
OUT
= 300 µF
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(Circuit of Figure 2 ) (Continued)
Junction to Ambient
Thermal Resistance
Discontinuous Mode Switching Waveforms
V
Notes:
A: Output Pin Voltage, 10V/div
B: Inductor Current, 0.2 A/div
C: Output Ripple Voltage, 20 mV/div,
AC-Coupled
Horizontal Time Base: 5 µs/div
250 mA Load Transient Response for Discontinuous
Mode Operation. L = 68 µH, C
Notes:
A: Output Voltage, 50 mV/div.
AC Coupled
B: 50 mA to 250 mA Load Pulse
Horizontal Time Base: 200 µs/div
8
OUT
= 5V, 100 mA Load Current, L = 100 µH
OUT
= 470 µF
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