max5093 Maxim Integrated Products, Inc., max5093 Datasheet - Page 6

• Manufacturer Part Number: max5093
• Description: 4v To 72v Input Ldos With Boost Preregulator
• Manufacturer: Maxim Integrated Products, Inc.

4V to 72V Input LDOs with Boost Preregulator
(V
applicable.)
6
IN
1000
_______________________________________________________________________________________
800
600
400
200
= V
0
100mV/div
50mV/div
EN
V
0
V
1V/div
1V/div
1V/div
2V/div
2A/div
BSOUT
BSOUT
V
V
DROPOUT VOLTAGE (V
OUT
OUT
V
V
I
= 14V, C
LX
IN
IN
V
BSOUT
50
vs. LDO LOAD CURRENT
LDO LOAD CURRENT (mA)
LINE-TRANSIENT RESPONSE
(V
PROGRAMMED < (V
SWITCHING WAVEFORMS
IN
100
IN
V
V
IN
BSOUT
= 47µF, C
STEP FROM 4V TO 7V)
= 5V, I
PROGRAMMED TO 7V
150
200μs/div
100μs/div
OUT
BSOUT
= 100mA,
BSOUT
200
- V
OUT
OUT
I
OUT
MAX5092/93 toc09
)
+ V
MAX5092/93 toc11
= 22µF, C
= 250mA
250
BST_DIS
5V (AC-COUPLED)
7V
4V
7V (AC-COUPLED)
Typical Operating Characteristics (continued)
)
5V
(AC-COUPLED)
7V
(AC-COUPLED)
5V
(AC-COUPLED)
0
5.15
5.10
5.05
5.00
4.95
4.90
4.85
OUT
0
vs. LDO LOAD CURRENT (MAX5092B)
= 10µF, C
T
(CERAMIC)
T
(ELECTROLYTIC), C
A
A
= -40°C: C
= +25°C, +135°C: C
T
T
A
A
= +25°C, V
= +25°C, V
LDO OUTPUT VOLTAGE
LDO LOAD CURRENT (mA)
IN
100
= 10μF, C
VL
IN
IN
OUT
= 4V
= 14V
= 1µF, T
IN
= 10μF (CERAMIC)
= 47μF, C
BSOUT
T
T
A
A
= +135°C, V
= +135°C, V
= 4.7μF, C
T
T
A
A
200
BSOUT
100mV/div
= -40°C, V
= -40°C, V
A
50mV/div
V
50V/div
50V/div
V
= +25°C, unless otherwise noted.) (See Figures 4–7 as
5V/div
BSOUT
5V/div
= 22μF
BSOUT
V
OUT
V
IN
IN
OUT
OUT
V
V
= 4V
= 14V
IN
IN
IN
IN
= 10μF
= 4V
= 14V
300
(V
(V
LINE-TRANSIENT RESPONSE
LINE-TRANSIENT RESPONSE
IN
IN
STEP FROM 3.5V TO 72V)
STEP FROM 3.5V TO 14V)
-70
0
200μs/div
100
40ms/div
POWER-SUPPLY REJECTION RATIO
1k
I
OUT
vs. FREQUENCY
MAX5092/93 toc12
MAX5092/93 toc10
FREQUENCY (Hz)
= 5mA
10k
V
IN
= 14V, I
14V
14V
3.5V
5V (AC-COUPLED)
7V
72V
3.5V
72V
7V
5V (AC-COUPLED)
100k
OUT
MAX5092/93 toc15
= 10mA
1M
10dB/div