Datasheet

MAX5025–MAX5028
Typical Operating Characteristics (continued)
(V
CC
= 5V, V
OUT
= 30V, T
A
= +25°C, unless otherwise noted.)
500kHz, 36V Output, SOT23,
Step-Up DC-DC Converters
_______________________________________________________________________________________ 5
EXITING SHUTDOWN
MAX5025-28 toc10
5V
OUTPUT
VOLTAGE
20V/div
INDUCTOR
CURRENT
50mA/div
SHUTDOWN
VOLTAGE
5V/div
30V
5V
2ms/div
MAX5026, V
CC
= 5V, V
OUT
= 30V, I
LOAD
= 1mA.
CIRCUIT OF FIGURE 3
ENTERING SHUTDOWN
MAX5025-28 toc11
30V
OUTPUT
VOLTAGE
20V/div
SHUTDOWN
VOLTAGE
5V/div
5V
5V
0V
100ms/div
MAX5026, V
CC
= 5V, V
OUT
= 30V, I
LOAD
= 1mA.
CIRCUIT OF FIGURE 3
MAX5025-28 toc12
LX PIN
20V/div
V
OUT
2mV/div
AC-COUPLED
I
L
100mA/div
0V
0mA
1μs/div
MAX5026, V
CC
= 5V, V
OUT
= 30V, I
LOAD
= 0.1mA.
CIRCUIT OF FIGURE 2
LIGHT-LOAD SWITCHING WAVEFORM
WITHOUT RC FILTER
MAX5025-28 toc13
LX PIN
20V/div
V
OUT
1mV/div
AC-COUPLED
I
L
100mA/div
0V
0mA
1μs/div
MAX5026, V
CC
= 5V, V
OUT
= 30V, I
LOAD
= 0.1mA.
CIRCUIT OF FIGURE 3
LIGHT-LOAD SWITCHING WAVEFORM
WITH RC FILTER
MAX5025-28 toc14
LX PIN
20V/div
V
OUT
5mV/div
AC-COUPLED
I
L
200mA/div
0V
0mA
1μs/div
MAX5026, V
CC
= 5V, V
OUT
= 30V, I
LOAD
= 2mA.
CIRCUIT OF FIGURE 2
MEDIUM-LOAD SWITCHING WAVEFORM
WITHOUT RC FILTER
MAX5025-28 toc15
LX PIN
20V/div
V
OUT
1mV/div
AC-COUPLED
I
L
200mA/div
0V
0mA
1μs/div
MAX5026, V
CC
= 5V, V
OUT
= 30V, I
LOAD
= 2mA.
CIRCUIT OF FIGURE 3
MEDIUM-LOAD SWITCHING WAVEFORM
WITH RC FILTER