LM20144

SNVS529G – OCTOBER 2007 – REVISED MARCH 2013

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TYPICAL PERFORMANCE CHARACTERISTICS (continued)

Unless otherwise specified: CIN = COUT = 100 µF, L = 1.0 µH (Coilcraft MSS1038), VIN = 5V, VOUT = 1.2V, RLOAD = 1.2Ω,

fSW = 1 MHz, TA = 25°C for efficiency curves, loop gain plots and waveforms, and TJ = 25°C for all others.

Peak Current Limit

vs.

VIN

Load Transient Response

Figure 19.

Figure 20.

Line Transient Response

Start-Up (Soft-Start)

Figure 21.

Figure 22.

Start-Up (Tracking)

Power Down

Figure 23.

Figure 24.

8

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