Datasheet

LM20143
www.ti.com SNVS528G –OCTOBER 2007–REVISED MARCH 2013
TYPICAL PERFORMANCE CHARACTERISTICS
Unless otherwise specified: C
IN
= C
OUT
= 100 µF, L = 1.0 µH (Coilcraft MSS1038), V
IN
= 5V, V
OUT
= 1.2V, R
LOAD
= 1.2Ω, f
SW
=
1 MHz, T
A
= 25°C for efficiency curves, loop gain plots and waveforms, and T
J
= 25°C for all others.
Efficiency vs. Efficiency vs.
Load Current (V
IN
= 5V, f
SW
= 1.5 MHz) Load Current (V
IN
= 3.3V, f
SW
= 1.5 MHz)
Figure 1. Figure 2.
Efficiency vs. Efficiency vs.
Load Current (V
IN
= 5V, f
SW
= 1.0 MHz) Load Current (V
IN
= 3.3V, f
SW
= 1.0 MHz)
Figure 3. Figure 4.
Efficiency vs. Efficiency vs.
Load Current (V
IN
= 5.0V, f
SW
= 500 kHz) Load Current (V
IN
= 3.3V, f
SW
= 500 kHz)
Figure 5. Figure 6.
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