
Typical Performance Characteristics (Circuit of Figure 2) Continuous Mode Switching Waveforms
V
IN = 20V, VOUT = 5V, ILOAD =1A
L = 47 H, C
OUT = 68 F, COUTESR=50 m
Discontinuous Mode Switching Waveforms
V
IN = 20V, VOUT = 5V, ILOAD = 300 mA
L = 15 H, C
OUT = 68 F (2x), COUTESR=25 m
01280318
Horizontal Time Base: 1 s/div
A: VSW Pin Voltage, 10 V/div.
B: Inductor Current, 0.5 A/div
C: Output Ripple Voltage, 20 mV/div AC-Coupled
01280319
Horizontal Time Base: 1 s/div
A: VSW Pin Voltage, 10 V/div.
B: Inductor Current, 0.5 A/div
C: Output Ripple Voltage, 20 mV/div AC-Coupled
Load Transient Response for Continuous Mode
V
IN = 20V, VOUT = 5V, ILOAD =1A
L = 47 H, C
OUT = 68 F, COUTESR=50 m
Load Transient Response for Discontinuous Mode
V
IN = 20V, VOUT = 5V,
L = 47 H, C
OUT = 68 F, COUTESR=50 m
01280320
Horizontal Time Base: 50 s/div
A: Output Voltage, 100 mV/div, AC-Coupled.
B: Load Current: 200 mA to 1A Load Pulse
01280321
Horizontal Time Base: 200 s/div
A: Output Voltage, 100 mV/div, AC-Coupled.
B: Load Current: 100 mA to 400 mA Load Pulse
LM2675
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