AN2565

Test setup and performance summary

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Figure 19.

Device current consumption vs. input voltage

10.6

Switching frequency vs. load current

Figure 20 and Figure 21 show the switching frequency variation with the load current in

points.

Figure 20.

OUT1 switching frequency vs. load current

STANDBY MODE INPUT BATTERY CURRENT

vs INPUT VOLTAGE

172

174

176

178

180

182

184

8

10121416

182022242628

INPUT VOLTAGE [V]

OUT1=3.3V Switching Frequency

0

50

100

150

200

250

0.01

0.10

1.00

10.00

Load current [A]

SKIP @ 12V

SKIP @ 24V

SKIP @ 32V

NO AUD. SKIP @ 12V

NO AUD. SKIP @ 24V

NO AUD. SKIP @ 32V

PWM @ 12V

PWM @ 24V

PWM @ 32V