Typical operating characteristics (continued) – Rainbow Electronics MAX15022 User Manual
Page 7
MAX15022
Dual, 4A/2A, 4MHz, Step-Down DC-DC
Regulator with Dual LDO Controllers
_______________________________________________________________________________________
7
CHANNEL 2 LOAD STEP RESPONSE
MAX15022 toc17
V
PVIN2
5V/div
V
OUT2
1.5V, AC-COUPLED
100mV/div
I
OUT2
1A/div
0V
0A
20
μs/div
EN1 = 0V
180
° OUT-OF-PHASE OPERATION
MAX15022 toc19
PVIN1 = PVIN2
5V/div
V
LX1
5V/div
V
LX2
5V/div
0V
0V
0V
200ns/div
IOUT1 = 3A
IOUT2 = 1.5A
CHANNEL 3 AND CHANNEL 4 OUTPUT-
VOLTAGE DEVIATION vs. LOAD CURRENT
MAX15022 toc20
LOAD CURRENT (mA)
OUTPUT-VOLTAGE DEVIATION (mV)
450
400
350
300
250
200
150
100
50
2
4
6
8
10
12
14
0
0
500
CHANNEL 3, V
IN
= 3.3V,
V
OUT3
= 2.5V
NJT403OP PNP
CHANNEL 4, V
IN
= 2.5V,
V
OUT4
= 1.5V
NJT403OP PNP
CHANNEL 2 LOAD STEP RESPONSE
MAX15022 toc18
V
PVIN2
5V/div
V
OUT2
1.5V, AC-COUPLED
100mV/div
I
OUT2
1A/div
0V
0A
20
μs/div
EN1 = 0V
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.)
CHANNEL 1 LOAD STEP RESPONSE
MAX15022 toc15
V
PVIN1
5V/div
V
OUT1
3.3V, AC-COUPLED
100mV/div
I
OUT1
2A/div
0V
0A
20
μs/div
EN2 = 0V
CHANNEL 1 LOAD STEP RESPONSE
MAX15022 toc16
V
PVIN1
5V/div
V
OUT1
3.3V, AC-COUPLED
100mV/div
I
OUT1
2A/div
0V
0A
20
μs/div
EN2 = 0V