MAX1775 Maxim, MAX1775 Datasheet - Page 8

• Manufacturer Part Number: MAX1775
• Description: Dual-Output Step-Down DC-DC Converter for PDA/Palmtop Computers
• Manufacturer: Maxim

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