Typical operating characteristics – Rainbow Electronics MAX17008 User Manual
Page 8
MAX17007A/MAX17008
Dual and Combinable QPWM Graphics
Core Controllers for Notebook Computers
8
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Typical Operating Characteristics
(Circuit of Figure 1, V
IN
= 12V, V
DD
= 5V, SKIP = GND, T
A
= +25°C, unless otherwise noted.)
SMPS2 1.5V EFFICIENCY
vs. LOAD CURRENT
MAX17007A/8 toc01
LOAD CURRENT (A)
EFFICIENCY (%)
10
1
0.1
50
60
70
80
90
100
40
20
30
10
0.01
100
6V
12V
20V
SKIP MODE
PWM MODE
SMPS2 1.5V EFFICIENCY
vs. LOAD CURRENT
MAX17007A/8 toc02
LOAD CURRENT (A)
EFFICIENCY (%)
10
1
0.1
50
60
70
80
90
100
40
20
30
10
0.01
100
SKIP MODE
PWM MODE
V
IN
= 12V
ULTRASONIC
MODE
SMPS2 1.5V OUTPUT VOLTAGE
vs. LOAD CURRENT
MAX17007A/8 toc03
LOAD CURRENT (A)
OUTPUT VOLTAGE (V)
10
5
1.50
1.52
1.54
1.48
0
15
SKIP MODE
ULTRASONIC MODE
PWM
V
IN
= 12V
COMBINED 1.2V EFFICIENCY
vs. LOAD CURRENT
MAX17007A/8 toc04
LOAD CURRENT (A)
EFFICIENCY (%)
10
1
0.1
50
60
70
80
90
100
40
20
30
10
0.01
100
SKIP MODE
PWM MODE
6V
12V
20V
COMBINED 1.2V OUTPUT VOLTAGE
vs. LOAD CURRENT
MAX17007A/8 toc05
LOAD CURRENT (A)
OUTPUT VOLTAGE (V)
16
20
8
4
24
12
1.19
1.20
1.21
1.22
1.18
0
28
SKIP MODE
PWM
V
IN
= 12V
SMPS2 SWITCHING FREQUENCY
vs. LOAD CURRENT
MAX17007A/8 toc06
LOAD CURRENT (A)
SWITCHING FREQUENCY (kHz)
10
1
0.1
200
250
300
350
150
50
100
0
0.01
100
SKIP MODE
PWM MODE
V
IN
= 12V
ULTRASONIC
MODE
SMPS2 SWITCHING FREQUENCY
vs. INPUT VOLTAGE
MAX17007A/8 toc07
INPUT VOLTAGE (V)
SWITCHING FREQUENCY (kHz)
20
4
24
250
300
350
200
0
28
8
12
16
V
IN
= 12V
SKIP = 5V
I
OUT2
= 5A
I
OUT2
= 0A
SMPS2 SWITCHING FREQUENCY
vs. TEMPERATURE
MAX17007A/8 toc08
TEMPERATURE (
°C)
SWITCHING FREQUENCY (kHz)
0
40
-20
60
290
270
310
330
250
-40
120
100
80
20
V
IN
= 12V
SKIP = 5V
I
OUT2
= 5A
I
OUT2
= 0A
SMPS2 MAXIMUM OUTPUT CURRENT
vs. INPUT VOLTAGE
MAX17007A/8 toc09
INPUT VOLTAGE (V)
MAXIMUM OUTPUT CURRENT (A)
20
4
24
12
11
13
14
10
0
28
8
12
16