MAX15002_12 Datasheet, PDF (5/29 Pages) Maxim Integrated Products – Dual-Output Buck Controller with Tracking/Sequencing

MAX15002
Dual-Output Buck Controller with
Tracking/Sequencing
Typical Operating Characteristics
(V_IN = 12V, referenced to Figure 8, T_A = T_J = +25°C, unless otherwise noted.)
CONVERTER 1 EFFICIENCY
vs. LOAD CURRENT
100
VIN = 6V
90
80
VIN = 12V
VIN = 16V
70
60
50
40
0.1
VOUT1 = 3.3V
fSW = 300kHz
1
10
100
LOAD CURRENT (A)
CONVERTER 2 LOAD REGULATION
1.00
VOUT2 = 1.8V
0.75
0.50
0.25
0
-0.25
-0.50
-0.75
-1.00
0
5
10
15
LOAD CURRENT (A)
CONVERTER 2 EFFICIENCY
vs. LOAD CURRENT
100
90
80 ^{VIN = 6V}
70
60
VIN = 12V
50
VIN = 16V
40
30
20
10
0
0.1
VOUT2 = 1.8V
fSW = 300kHz
1
10
100
LOAD CURRENT (A)
INTERNAL VOLTAGE REGULATION (REG)
5.00
4.99
4.98
4.97
4.96
4.95
4.94
4.93
4.92
4.91
4.90
0
VIN = 12V
CREG = 2.2µF
20
40
60
80 100
TEMPERATURE (°C)
CONVERTER 1 LOAD REGULATION
1.00
VOUT1 = 3.3V
0.75
0.50
0.25
0
-0.25
-0.50
-0.75
-1.00
0
5
10
15
LOAD CURRENT (A)
CONVERTER-SWITCHING FREQUENCY
vs. RRT
10,000
1000
100
10
0
200
400
600
800
RRT (kΩ)
SWITCHING FREQUENCY ACCURACY
vs. TEMPERATURE
10
8
6
4
2
0
-2
-4
-6
-8
-10
-50 -25
fSW = 300kHz
0 25 50 75 100 125 150
TEMPERATURE (°C)
VALLEY CURRENT-LIMIT THRESHOLD
vs. VILIM_
350
300
250
200
150
100
50
500
1000 1500 2000 2500 3000 3500
VILIM_ (mV)
Maxim Integrated
5