Datasheet

MAX8576–MAX8579
3V to 28V Input, Low-Cost, Hysteretic
Synchronous Step-Down Controllers
6 _______________________________________________________________________________________
Typical Operating Characteristics (continued)
( T
A
= +25°C, unless otherwise noted.)
POWER-DOWN
(CIRCUIT OF FIGURE 2, MAX8576)
MAX8576-79 toc13
4ms/div
V
IN
V
OUT
I
LX
5V/div
0
1V/div
0
0
10A/div
STARTUP AND SHUTDOWN
(CIRCUIT OF FIGURE 3)
MAX8576-79 toc14
400μs/div
V
EN
V
DL
V
OUT
I
LX
2V/div
0
10V/div
1V/div
0
0
5A/div
0
POWER-DOWN V
CC
(CIRCUIT OF FIGURE 3)
MAX8576-79 toc11
400μs/div
V
IN
V
CC
V
OUT
I
LX
10V/div
0
5V/div
1V/div
5A/div
0
POWER-UP
(CIRCUIT OF FIGURE 2)
MAX8576-79 toc12
1ms/div
V
IN
V
OUT
I
LX
10V/div
0
1V/div
0
0
10A/div
POWER-UP V
IN
(CIRCUIT OF FIGURE 3)
MAX8576-79 toc09
400μs/div
V
IN
V
CC
V
OUT
I
LX
10V/div
0
5V/div
1V/div
5A/div
0
POWER-UP V
CC
(CIRCUIT OF FIGURE 3)
MAX8576-79 toc10
400μs/div
V
IN
V
CC
V
OUT
I
LX
10V/div
0
5V/div
1V/div
5A/div
0