Typical operating characteristics (continued) – Rainbow Electronics MAX5093 User Manual
Page 6
MAX5092/MAX5093
4V to 72V Input LDOs with Boost Preregulator
6
_______________________________________________________________________________________
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.)
LINE-TRANSIENT RESPONSE
(V
IN
STEP FROM 3.5V TO 72V)
MAX5092/93 toc09
40ms/div
V
IN
50V/div
V
OUT
50mV/div
V
BSOUT
50V/div
72V
3.5V
5V (AC-COUPLED)
72V
7V
I
OUT
= 5mA
LINE-TRANSIENT RESPONSE
(V
IN
STEP FROM 3.5V TO 14V)
MAX5092/93 toc10
200µs/div
V
OUT
100mV/div
V
BSOUT
5V/div
V
IN
5V/div
14V
14V
7V
5V (AC-COUPLED)
3.5V
POWER-SUPPLY REJECTION RATIO
vs. FREQUENCY
MAX5092/93 toc14
FREQUENCY (Hz)
100k
10k
1k
-70
0
100
1M
V
IN
= 8V, I
OUT
= 10mA
PSRR (dB)
10dB/div
STARTUP THROUGH INPUT VOLTAGE
MAX5092/93 toc15
100µs/div
0V
V
IN
10V/div
V
BSOUT
10V/div
I
LX
5A/div
V
OUT
5V/div
0V
0A
0V
I
OUT
= 250mA
DROPOUT VOLTAGE (V
BSOUT
- V
OUT
)
vs. LDO LOAD CURRENT
MAX5092/93 toc11
LDO LOAD CURRENT (mA)
DROPOUT VOLTAGE (mV)
200
150
100
50
200
400
600
800
1000
0
0
250
LDO OUTPUT VOLTAGE
vs. LDO LOAD CURRENT (MAX5092B)
MAX5092/93 toc12
LDO LOAD CURRENT (mA)
LDO OUTPUT VOLTAGE (V)
200
100
4.90
4.95
5.00
5.05
5.10
5.15
4.85
0
300
T
A
= -40°C: C
IN
= 10µF, C
BSOUT
= 4.7µF, C
OUT
= 10µF
(CERAMIC)
T
A
= +25°C, +135°C: C
IN
= 47µF, C
BSOUT
= 22µF
(ELECTROLYTIC), C
OUT
= 10µF (CERAMIC)
T
A
= +25°C, V
IN
= 4V
T
A
= +25°C, V
IN
= 14V
T
A
= -40°C, V
IN
= 4V
T
A
= -40°C, V
IN
= 14V
T
A
= +135°C, V
IN
= 4V
T
A
= +135°C, V
IN
= 14V
POWER-SUPPLY REJECTION RATIO
vs. FREQUENCY
MAX5092/93 toc13
FREQUENCY (Hz)
100k
10k
1k
-70
0
10dB/div
100
1M
V
IN
= 14V, I
OUT
= 10mA
PSRR (dB)