Datasheet

0 TO 4A LOAD-TRANSIENT RESPONSE,
V
OUT
= 5V, PWM MODE
MAX16955 toc08
I
OUT
2A/div
V
OUT
200mV/div
100µs
0 TO 4A LOAD-TRANSIENT RESPONSE,
V
OUT
= 3.3V, PWM MODE
MAX16955 toc09
I
OUT
2A/div
V
OUT
200mV/div
100µs
SYNCHRONIZATION WITH EXTERNAL CLOCK
f
FSYNC
= 1MHz
MAX16955 toc10
V
FSYNC
2V/div
V
LX
5V/div
1µs
COLD CRANK (PWM MODE)
MAX16955 toc11
I
L
5A/div
V
PGOOD
5V/div
V
SUP
5V/div
V
OUT
5V/div
10ms
LOAD DUMP RESPONSE (SKIP MODE)
MAX16955 toc12
I
LX
5A/div
V
PGOOD
5V/div
V
SUP
20V/div
V
OUT
5V/div
100ms
36V
8V
LOAD DUMP RESPONSE (PWM MODE)
MAX16955 toc13
I
LX
5A/div
V
PGOOD
5V/div
V
SUP
20V/div
V
OUT
5V/div
100ms
SLOW INPUT RESPONSE (PWM MODE)
MAX16955 toc14
V
LX
10V/div
V
PGOOD
5V/div
V
SUP
10V/div
V
OUT
5V/div
10s
14V
SLOW INPUT RESPONSE (SKIP MODE)
MAX16955 toc15
V
LX
10V/div
V
PGOOD
5V/div
V
SUP
10V/div
V
OUT
5V/div
10s
Typical Operating Characteristics (continued)
(V
SUP
= V
EN
= 14V, C
IN
= 10μF, C
OUT
= 94μF, C
BIAS
= 2.2μF, C
BST
= 0.1μF, R
FOSC
= 66.5kΩ, f
OSC
= 468kHz, V
FB
= V
BIAS
,
V
OUT
= 5V, T
A
= +25°C, unless otherwise noted.)
MAX16955
36V, 1MHz Step-Down Controller
with Low Operating Current
6
Maxim Integrated