LM2574HVMX-3.3 National Semiconductor, LM2574HVMX-3.3 Datasheet - Page 8

• Manufacturer Part Number: LM2574HVMX-3.3
• Description: Conv DC-DC Single Inv/Step Down 4V to 60V 14-Pin SOIC W T/R
• Manufacturer: National Semiconductor
• Type: Inverting|Step Downr

Specifications of LM2574HVMX-3.3

• Package: 14SOIC W
• Number Of Outputs: 1
• Minimum Input Voltage: 4 V
• Maximum Input Voltage: 60 V
• Switching Frequency: 58 KHz
• Operating Supply Voltage: 60(Max) V
• Maximum Output Current: 0.5 A
• Output Type: Fixed
• Output Voltage: 3.3 V
• Switching Regulator: Yes
• Efficiency: 72(Typ) %
• Operating Temperature: -40 to 125 °C

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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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