LM2574, LM2574HV
SNVS104C –JUNE 1999–REVISED APRIL 2013
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Typical Performance Characteristics
(Circuit of Figure 24)
Continuous Mode Switching Waveforms Discontinuous Mode Switching Waveforms
V
OUT
= 5V, 500 mA Load Current, L = 330 μH V
OUT
= 5V, 100 mA Load Current, L = 100 μH
Notes: Notes:
A: Output Pin Voltage, 10V/div A: Output Pin Voltage, 10V/div
B: Inductor Current, 0.2 A/div B: Inductor Current, 0.2 A/div
C: Output Ripple Voltage, 20 mV/div, C: Output Ripple Voltage, 20 mV/div,
AC-Coupled AC-Coupled
Horizontal Time Base: 5 μs/div Horizontal Time Base: 5 μs/div
Figure 18. Figure 19.
500 mA Load Transient Response for Continuous 250 mA Load Transient Response for Discontinuous
Mode Operation. L = 330 μH, C
OUT
= 300 μF Mode Operation. L = 68 μH, C
OUT
= 470 μF
Notes:
Notes:
A: Output Voltage, 50 mV/div.
A: Output Voltage, 50 mV/div.
AC Coupled
AC Coupled
B: 100 mA to 500 mA Load Pulse
B: 50 mA to 250 mA Load Pulse
Horizontal Time Base: 200 μs/div
Horizontal Time Base: 200 μs/div
Figure 20. Figure 21.
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