Datasheet

LM2670
www.ti.com SNVS036J –APRIL 2000–REVISED APRIL 2013
Typical Performance Characteristics (continued)
Discontinuous Mode Switching Waveforms Load Transient Response for Continuous Mode
V
IN
= 20V, V
OUT
= 5V, I
LOAD
= 500 mA V
IN
= 20V, V
OUT
= 5V
L = 10 μH, C
OUT
= 400 μF, C
OUT
ESR = 13 mΩ L = 33 μH, C
OUT
= 200 μF, C
OUT
ESR = 26 mΩ
A: Output Voltage, 100 mV//div, AC-Coupled
A: V
SW
Pin Voltage, 10 V/div
B: Load Current: 500 mA to 3A Load Pulse
B: Inductor Current, 1 A/div
C: Output Ripple Voltage, 20 mV/div AC-Coupled
Figure 16. Figure 17.
Load Transient Response for Discontinuous Mode
V
IN
= 20V, V
OUT
= 5V,
L = 10 μH, C
OUT
= 400 μF, C
OUT
ESR = 13 mΩ
A: Output Voltage, 100 mV/div, AC-Coupled
B: Load Current: 200 mA to 3A Load Pulse
Figure 18.
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