Datasheet

MAX8566
High-Efficiency, 10A, PWM
Internal-Switch Step-Down Regulator
10 ______________________________________________________________________________________
0V
I
IN
(5A/div)
V
REFIN
(500mV/div)
V
OUT
(1V/div)
V
PWRGD
(2V/div)
6.5A
0A
0.6V
0V
1.8V
3V
0V
t = 400µs/div
SOFT-START WITH REFIN
MAX8566 toc16
0V
I
IN
(AC-COUPLED)
(20mA/div)
I
L1
(2A/div)
I
L2
(2A/div)
V
LX2
(5V/div)
V
LX1
(5V/div)
3.3V
0A
0A
0V
3.3V
t = 400ns/div
SYNCHRONIZED OPERATION (NO LOAD)
MAX8566 toc17
0
200
100
300
600
700
500
400
800
0 23451 678910
SOFT-START TIME
vs. SOFT-START CAPACITANCE
MAX8566 toc18
C
SS
(µF)
SOFT-START TIME (ms)
t = 400µs/div
STARTUP INTO PREBIASED OUTPUT
(R
LOAD
= 0.18Ω)
MAX8566 toc19
0V
0.9V
I
IN
(5A/div)
V
EN
(12V/div)
V
OUT
(1V/div)
V
PWRGD
(2V/div)
7.5A
(PEAK)
0A
3.3V
0V
1.8V
3V
0V
Typical Operating Characteristics (continued)
(Typical values are at V
IN
= V
DD
= 3.3V, V
OUT
= 1.8V, R
FREQ
= 50kΩ, I
OUT
= 10A, and T
A
= +25°C.)