3.3V/5V or Adjustable-Output,
Step-Up DC-DC Converters
_____________________________Typical Operating Characteristics (continued)
(Circuits of Figure 2, T
A
= +25°C, unless otherwise noted.)
MAX856–MAX859
MAX856/MAX857
LINE-TRANSIENT RESPONSE (5V MODE)
MAX856/MAX857
LOAD-TRANSIENT RESPONSE (5V MODE)
V
OUT
50mV/div
V
OUT
50mV/div
3V
V
IN
2V
I
LOAD
0mA to 100mA
2ms/div
V
IN
= 2.5V
50µs/div
MAX859 LINE-TRANSIENT RESPONSE
MAX858/MAX859 LOAD-TRANSIENT RESPONSE
V
OUT
50mV/div
V
OUT
50mV/div
3V
V
IN
2V
1V/div
I
LOAD
0mA to 25mA
0
25
1ms/div
V
IN
= 2.5V
2ms/div
MAX856 START-UP DELAY (5V MODE)
MAX858/MAX859 START-UP DELAY (5V MODE)
V
OUT
2V/div
V
OUT
2V/div
V
SHDN
5V/div
V
SHDN
5V/div
V
IN
= 2.5V, I
LOAD
= 100mA
5ms/div
V
IN
= 2.5V, I
LOAD
= 25mA
5ms/div
_______________________________________________________________________________________
5
MAXIM [ MAXIM INTEGRATED PRODUCTS ]
