Data Sheet

ISL85410
12
FN8375.5
July 24, 2014
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FIGURE 29. STEADY STATE AT NO LOAD, PFM
FIGURE 30. STEADY STATE AT NO LOAD, PWM
FIGURE 31. STEADY STATE AT 1A, PWM
FIGURE 32. LIGHT LOAD OPERATION AT 20mA, PFM
FIGURE 33. LIGHT LOAD OPERATION AT 20mA, PWM
FIGURE 34. LOAD TRANSIENT, PFM
Measurements f
SW
= 500kHz, V
IN
= 24V, V
OUT
= 3.3V, T
A
= +25°C (Continued)
LX 20V/DIV
V
OUT
20mV/DIV
I
L
20mA/DIV
10ms/DIV
LX 20V/DIV
V
OUT
20mV/DIV
I
L
20mA/DIV
1µs/DIV
LX 20V/DIV
I
L
1A/DIV
1µs/DIV
V
OUT
20mV/DIV
LX 20V/DIV
I
L
200mA/DIV
10µs/DIV
V
OUT
50mV/DIV
LX 20V/DIV
I
L
200mA/DIV
1µs/DIV
V
OUT
10mV/DIV
I
L
1A/DIV
200µs/DIV
V
OUT
100mV/DIV