Datasheet

SOFT-START AND SOFT-STOP WAVEFORM
MAX1875 toc07
1ms/div
0V
1V/div
0V
1V/div
V
OUT2
V
OUT2
5V
0V
EN
RESET TIMEOUT (MAX1876 ONLY)
MAX1875 toc08
100ms/div
V
OUT1
0V
0V
0V
V
OUT2
5V/div
0
EN
V
RST
OUT-OF-PHASE WAVEFORM
MAX1875 toc09
1µs/div
V
OUT1
20mV/div
V
OUT2
20mV/div
12V
V
LX1
V
LX2
0V
0V
12V
MAX1875/MAX1876
Dual 180° Out-of-Phase PWM Step-
Down Controllers with POR
_______________________________________________________________________________________ 5
EXTERNALLY SYNCHRONIZED
SWITCHING WAVEFORM
MAX1875 toc10
400ns/div
V
OUT1
10mV/div
AC-COUPLED
5V
5V
0V
0V
V
SYNC
V
CK0
V
LX1
10V
0V
CKO OUTPUT WAVEFORM
MAX1875 toc11
400ns/div
V
OUT1
10mV/div
AC-COUPLED
5V
0V
V
CK0
V
LX1
10V
0V
SYNC = GND
CKO OUTPUT WAVEFORM
MAX1875 toc12
400ns/div
V
OUT1
10mV/div
5V
0V
V
CK0
V
LX1
10V
0V
SYNC = V
L
Typical Operating Characteristics (continued)
(Circuit of Figure 1, V
IN
= 12V, T
A
= +25°C, unless otherwise noted.)
SHORT-CIRCUIT CURRENT FOLDBACK
AND RECOVERY
MAX1875 toc13
4ms/div
I
OUT1
= 10A(5A/div)
V
OUT1
= 1.8V(1V/div)
V
OUT2
= 2.5V(1V/div)
I
OUT2
= 10A(5A/div)
V
OUT2
SHORT