LM3544

SNVS062C – AUGUST 2000 – REVISED MAY 2013

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TYPICAL PERFORMANCE CHARACTERISTICS (continued)

Figure 16. Turn-On/Turn-Off Response with 47

Ω/33μF Load

Figure 17. Turn-On/Turn-Off Response with 10

Ω/33μF Load

Figure 18. Enable Into a Short(2)

Figure 19. Short Connected to Enabled Device(2)

Figure 20. Over-Current Response with Ramped Load on

Figure 21. Inrush Current to Downstream Device when

OUT1 and Fixed Load on OUT2(3)

LM3544 is Enabled(4)

(2)

Output is shorted to Ground through a 100 m

Ω resistor.

(3)

Output is shorted to Ground through a 100 m

Ω resistor.

(4)

Load is two capacitors and one resistor in parallel to model an actual USB load condition. The first capacitor has a value of 33

μF to

model the LM3544 output capacitor. The second capacitor has a value of 10

μF to model the maximum allowable input capacitance of

the downstream device. The resistor is a 47

Ω resistor to model the maximum allowable input resistance of the downstream device.

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