Datasheet

MAX16977
36V, 2A, 2.2MHz Step-Down Converter
with Low Operating Current
6Maxim Integrated
Typical Operating Characteristics (continued)
(V
SUP
= V
SUPSW
= 14V, V
EN
= 14V, V
OUT
= 5V, V
FSYNC
= 0V, R
FOSC
= 12.1kHz, T
A
= +25NC, unless otherwise noted.)
OUTPUT RESPONSE TO SLOW INPUT RAMP
(I
LOAD
= 2A)
MAX16977 toc13
4s/div
10V/div
10V/div
5V/div
0V
0V
0V
2A/div
0A
V
IN
V
LX
I
LOAD
V
OUT
5V/2.2MHz
LOAD DUMP TEST
MAX16977 toc12
100ms/div
10V/div
5V/div
0V
0V
V
IN
V
OUT
5V/2.2MHz
42V
14V
UNDERVOLTAGE PULSE
(5V/2.2MHz)
MAX16977 toc11
10ms/div
5V/div
5V/div
5V/div
0V
0V
20V/div
0V
0V
V
IN
V
OUT
V
LX
V
BIAS
RESISTIVE LOAD = 2.5Ω
3.5V
LINE-TRANSIENT RESPONSE
(5V/2.2MHz)
MAX16977 toc08
100µs/div
100mV/div
1A/div
V
OUT
(AC-COUPLED)
I
LOAD
0A
500mA
FSYNC TRANSITION FROM INTERNAL TO EXTERNAL FREQUENCY
(3.3V/2.2MHz CONFIGURATION)
MAX16977 toc10
V
LX
V
FSYNC
5V/div
2V/div
0V
0V
200ns/div
f
FSYNC
= 2.475MHz
LOAD-TRANSIENT RESPONSE
(SKIP MODE)
MAX16977 toc09
V
OUT
AC-COUPLED
I
LOAD
50mV/div
100mA/div
0
100µs/div
5V/2.2MHz