Typical operating characteristics (continued) – Rainbow Electronics MAX5093 User Manual
Page 8
MAX5092/MAX5093
4V to 72V Input LDOs with Boost Preregulator
8
_______________________________________________________________________________________
BOOST CONVERTER POWER LOSS
(V
BSOUT
= 7V)
MAX5092/93 toc26
I
OUT
(mA)
POWER LOSS (W)
300
250
200
150
100
50
0.2
0.4
0.6
0.8
1.0
0
0
350
T
A
= +105°C: V
IN
= 3.5V
V
IN
= 4V
V
IN
= 5V
T
A
= +25°C: V
IN
= 3.5V
V
IN
= 4V
V
IN
= 5V
BOOST CONVERTER POWER LOSS
(V
BSOUT
= 11V)
MAX5092/93 toc27
I
OUT
(mA)
POWER LOSS (W)
300
250
200
150
100
50
0.2
0.4
0.6
0.8
1.0
1.2
0
0
350
V
IN
= 5V
V
IN
= 3.5V
V
IN
= 4V
T
A
= +105°C: V
IN
= 4V
V
IN
= 5V
V
IN
= 3.5V
GROUND CURRENT DISTRIBUTION
(162 UNITS TESTED)
MAX5092/93 toc28
I
GND
(µA)
NUMBER OF UNITS
5
10
15
20
25
30
35
40
0
T
A
= T
J
= +125°C
T
A
= T
J
= -40°C
70
68
52
54
56
60
62
64
66
58
LDO LOAD-TRANSIENT RESPONSE
(MAX5092B)
MAX5092/93 toc22
2ms/div
V
OUT
50mV/div
I
OUT
100mA/div
(AC-COUPLED)
0mA
INPUT-VOLTAGE STEP RESPONSE
MAX5092/93 toc23
200ms/div
V
OUT
20mV/div
V
IN
20V/div
5V (AC-COUPLED)
72V
3.5V
I
OUT
= 5mA
ENABLE AND HOLD TIMING
MAX5092/93 toc24
200ms/div
V
EN
5V/div
V
HOLD
5V/div
V
OUT
5V/div
0V
0V
0V
INTERNAL BOOST DIODE FORWARD DROP
(MAX5092)
MAX5092/93 toc25
DIODE CURRENT (A)
DIODE VOLTAGE (mV)
2.5
2.0
1.5
1.0
0.5
250
500
750
1000
1250
1500
0
0
3.0
V
IN
= 8V, BOOST CONVERTER
NOT SWITCHING
Typical Operating Characteristics (continued)
(V
IN
= V
EN
= 14V, C
IN
= 47µF, C
BSOUT
= 22µF, C
OUT
= 10µF, C
VL
= 1µF, T
A
= +25°C, unless otherwise noted.) (See Figures 4–7 as
applicable.)