Rainbow Electronics MAX15022 - Manual (Page 6)

MAX15022
Dual, 4A/2A, 4MHz, Step-Down DC-DC
Regulator with Dual LDO Controllers
6 _______________________________________________________________________________________
QUIESCENT CURRENT
vs. TEMPERATURE
MAX15022 toc09
TEMPERATURE ( °C)
QUIESCENT CURRENT (mA)
110 95 65 80 -10 5 20 35 50 -25
2.75
3.00
3.25
3.50
3.75
4.00
4.25
4.50
4.75
5.00
2.50
-40 125
NO SWITCHING
SWITCHING CURRENT
vs. TEMPERATURE
MAX15022 toc10
TEMPERATURE ( °C)
SWITCHING CURRENT (mA)
110 95 65 80 -10 5 20 35 50 -25
14
13
15
16
17
18
19
20
21
22
23
24
25
26
27
12
-40 125
REGULATOR 1 ENABLED
V
OUT1 = 3.3V
REGULATOR 2 ENABLED
V
OUT2 = 1.5V
NORMALIZED UNDERVOLTAGE LOCKOUT
THRESHOLD vs. TEMPERATURE
MAX15022 toc11
TEMPERATURE ( °C)
NORMALIZED UVLO THRESHOLD
110 95 65 80 -10 5 20 35 50 -25
0.975
0.980
0.985
0.990
0.995
1.000
1.005
1.010
1.015
1.020
1.025
1.030
0.970
-40 125
V UVLO (NOM) = 2.2V
COINCIDENT TRACKING SOFT-START
MAX15022 toc13
V AVIN
5V/div
V OUT1
1V/div
V OUT2
1V/div
0V
0V
1ms/div
COINCIDENT TRACKING SOFT-STOP
MAX15022 toc14
V AVIN
5V/div
1V/div
0V
0V
400 μs/div
V OUT2
EN1
V OUT1
Typical Operating Characteristics (continued)
(V
AVIN
= V
DVDD1
= V
DVDD2
= V
PVIN1
= V
PVIN2
= 5V, V
OUT1
= 3.3V, V
OUT2
= 1.5V, V
PGND_
= 0V, R
T
= 16.5k Ω. T
A
= +25°C, unless
otherwise noted.)
EN_ THRESHOLD
vs. TEMPERATURE
MAX15022 toc12
TEMPERATURE ( °C)
EN_ THRESHOLD (V)
110 95 -25 -10 5 35 50 65 20 80 -40 125
1.215
1.220
1.225
1.230
1.235
1.240
1.245
1.250
1.255
1.260
1.210