Datasheet

(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 4V TO 7V)
MAX5092/93 toc09
200µs/div
V
OUT
50mV/div
V
IN
1V/div
V
BSOUT
1V/div
5V (AC-COUPLED)
7V
4V
7V (AC-COUPLED)
I
OUT
= 250mA
LINE-TRANSIENT RESPONSE
(V
IN
STEP FROM 3.5V TO 72V)
MAX5092/93 toc10
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
SWITCHING WAVEFORMS
V
BSOUT
PROGRAMMED < (V
OUT
+ V
BST_DIS
)
MAX5092/93 toc11
100µs/div
V
IN
1V/div
V
BSOUT
2V/div
V
OUT
100mV/div
I
LX
2A/div
5V
(AC-COUPLED)
7V
(AC-COUPLED)
5V
(AC-COUPLED)
0
V
IN
= 5V, I
OUT
= 100mA,
V
BSOUT
PROGRAMMED TO 7V
LINE-TRANSIENT RESPONSE
(V
IN
STEP FROM 3.5V TO 14V)
MAX5092/93 toc12
200µs/div
V
OUT
100mV/div
V
BSOUT
5V/div
V
IN
5V/div
14V
14V
7V
5V (AC-COUPLED)
3.5V
DROPOUT VOLTAGE (V
BSOUT
- V
OUT
)
vs. LDO LOAD CURRENT
MAX5092/93 toc13
LDO LOAD CURRENT (mA)
DROPOUT VOLTAGE (mV)
20015010050
200
400
600
800
1000
0
0 250
LDO OUTPUT VOLTAGE
vs. LDO LOAD CURRENT (MAX5092B)
MAX5092/93 toc14
LDO LOAD CURRENT (mA)
LDO OUTPUT VOLTAGE (V)
200100
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
= -40C, V
IN
= 4V
T
A
= -40C, 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 toc15
FREQUENCY (Hz)
100k10k1k
-70
0
10dB/div
100 1M
V
IN
= 14V, I
OUT
= 10mA
PSRR (dB)
Maxim Integrated │ 6
www.maximintegrated.com
MAX5092/MAX5093 4V to 72V Input LDOs with Boost Preregulator
Typical Operating Characteristics (continued)