LM2596
SNVS124C –NOVEMBER 1999–REVISED APRIL 2013
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Typical Performance Characteristics (continued)
(Circuit of Figure 20)
Continuous Mode Switching Waveforms
Feedback Pin
Bias Current
VIN = 20V, VOUT = 5V, ILOAD = 2A
L = 32 μH, COUT = 220 μF, COUT ESR = 50 mΩ
A: Output Pin Voltage, 10V/div.
B: Inductor Current 1A/div.
C: Output Ripple Voltage, 50 mV/div.
Figure 15.
Figure 16. Horizontal Time Base: 2 μs/div.
Discontinuous Mode Switching Waveforms
VIN = 20V, VOUT = 5V, ILOAD = 500 mA
L = 10 μH, COUT = 330 μF, COUT ESR = 45 mΩ
Load Transient Response for Continuous Mode
VIN = 20V, VOUT = 5V, ILOAD = 500 mA to 2A
L = 32 μH, COUT = 220 μF, COUT ESR = 50 mΩ
A: Output Voltage, 100 mV/div. (AC)
B: 500 mA to 2A Load Pulse
A: Output Pin Voltage, 10V/div.
B: Inductor Current 0.5A/div.
C: Output Ripple Voltage, 100 mV/div.
Figure 17. Horizontal Time Base: 2 μs/div.
Figure 18. Horizontal Time Base: 100 μs/div.
Load Transient Response for Discontinuous Mode
VIN = 20V, VOUT = 5V, ILOAD = 500 mA to 2A
L = 10 μH, COUT = 330 μF, COUT ESR = 45 mΩ
A: Output Voltage, 100 mV/div. (AC)
B: 500 mA to 2A Load Pulse
Figure 19. Horizontal Time Base: 200 μs/div.
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