Typical operating characteristics (continued) – Rainbow Electronics MAX5097 User Manual
Page 7
MAX5096/MAX5097
40V, 600mA Buck Converters with Low-
Quiescent-Current Linear Regulator Mode
_______________________________________________________________________________________
7
Typical Operating Characteristics (continued)
(V
IN
= +14V, V
EN
= +2.4V, MAX5097AATE+, Figures 2 and 4, T
A
= +25°C, unless otherwise specified.)
0
30
20
10
40
50
60
70
80
90
100
0.01
0.1
1
EFFICIENCY vs. LOAD CURRENT
(V
OUT
= 5V)
MAX5096 toc10
LOAD CURRENT (A)
EFFICIENCY (%)
V
IN
= 40V
V
IN
= 5.5V
V
IN
= 24V
V
IN
= 14V
2ms/div
LOAD-TRANSIENT RESPONSE
(LDO MODE)
I
OUT
50mA/div
V
OUT
50mV/div
MAX5096 toc11
V
IN
= 14V
I
OUT
= 100
µA to 50mA
1ms/div
LOAD-TRANSIENT RESPONSE
(BUCK MODE)
I
OUT
200mA/div
V
OUT
AC-COUPLED
100mV/div
MAX5096 toc12
V
IN
= 14V
I
STEP
= 300mA to 600mA
10ms/div
V
IN
STARTUP RESPONSE
(LDO MODE)
V
IN
10V/div
RESET
5V/div
MAX5096 toc13
V
IN
= 14V
I
OUT
= 0A
C
CT
= 0.047
µF
V
EN
10V/div
V
OUT
2V/div
10ms/div
ENABLE STARTUP RESPONSE
(LDO MODE)
V
IN
10V/div
RESET
5V/div
MAX5096 toc14
V
IN
= 14V
I
OUT
= 100mA
C
CT
= 0.047
µF
V
EN
5V/div
V
OUT
2V/div
10ms/div
V
IN
STARTUP RESPONSE
(BUCK MODE)
V
IN
10V/div
RESET
5V/div
MAX5096 toc15
V
IN
= 14V
I
OUT
= 0A
C
CT
= 0.047
µF
V
EN
5V/div
V
OUT
2V/div
10ms/div
ENABLE STARTUP RESPONSE
(BUCK MODE)
V
IN
10V/div
RESET
5V/div
MAX5096 toc16
V
IN
= 14V
I
OUT
= 600mA
C
CT
= 0.047
µF
V
EN
5V/div
V
OUT
2V/div
100ms/div
SHUTDOWN RESPONSE THROUGH
V
IN
(LDO MODE)
V
IN
10V/div
RESET
5V/div
MAX5096 toc17
I
OUT
= 50mA
V
EN
10V/div
V
OUT
2V/div
100ms/div
SHUTDOWN RESPONSE THROUGH
V
IN
(BUCK MODE)
V
IN
10V/div
RESET
5V/div
MAX5096 toc18
I
OUT
= 50mA
V
EN
10V/div
V
OUT
2V/div