Typical operating characteristics (continued) – Rainbow Electronics MAX1775 User Manual
Page 8
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MAX1775
Dual-Output Step-Down
DC-DC Converter for PDA/Palmtop Computers
8
_______________________________________________________________________________________
5V
3.3V
CORE LINE-TRANSIENT RESPONSE
(3.3V TO 5V)
MAX1775 toc10
100
µs/div
V
INC
V
CORE
50mV/div
1V/div
1A
0
MAIN LOAD TRANSIENT
(LOAD FROM 100mA to 1A, V
IN
= 5V)
MAX1775 toc11
200
µs/div
I
MAIN
V
MAIN
50mV/div
100mA
400mA
MAIN LOAD TRANSIENT (IN DROPOUT
LOAD FROM 50mA TO 500mA)
MAX1775 toc12
200
µs/div
V
MAIN
50mV/div
200mA
0
I
MAIN
TURN-ON RESPONSE
(CIRCUIT OF FIGURE 4), NO LOAD
MAX1775 toc13
100
µs/div
200mA
0
1V
V
CORE
2V
3V
V
MAIN
5V
400mA
0mA
I
IN
0
SHDNM
Typical Operating Characteristics (continued)
(Circuit of Figure 1, V
MAIN
= +3.3V, V
CORE
= +1.8V, T
A
= +25°C, unless otherwise noted.)
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