MAX8775 Просмотр технического описания (PDF) - Maxim Integrated
Номер в каталоге
Компоненты Описание
производитель
MAX8775 Datasheet PDF : 30 Pages
| |||
Dual and Combinable Graphics Core
Controller for Notebook Computers
Typical Operating Characteristics
(Circuit of Figure 1, VIN = 12V, VDD = VCC = 5V, SKIP_ = GND, TA = +25°C, unless otherwise noted.)
1-PHASE EFFICIENCY
vs. LOAD CURRENT (VOUT = 1.5V)
100
90
80
70
60
50
40
0.1
VIN = 7V, PWM
VIN = 12V, PWM
VIN = 20V, PWM
VIN = 7V, SKIP
VIN = 12V, SKIP
VIN = 20V, SKIP
1
10
100
LOAD CURRENT (A)
OUTPUT VOLTAGE vs. LOAD CURRENT
1.505
1.503
1.501
1.499
1.497
1.495
0
VIN = 12V
VOUT = 1.5V
PWM MODE
SKIP MODE
5 10 15 20 25 30
LOAD CURRENT (A)
NO-LOAD SUPPLY CURRENT
vs. INPUT VOLTAGE (1-PHASE PWM MODE)
100
2-PHASE EFFICIENCY
vs. LOAD CURRENT (VOUT = 1.5V)
100
90
80
70
60
50
40
0.1
VIN = 7V, PWM
VIN = 12V, PWM
VIN = 20V, PWM
VIN = 7V, SKIP
VIN = 12V, SKIP
VIN = 20V, SKIP
1
10
100
LOAD CURRENT (A)
EFFICIENCY
vs. LOAD CURRENT (VOUT = 1.2V)
100
90
80
70
60
50
40
0.1
VIN = 12V
VOUT = 1.2V
1-PHASE, PWM
2-PHASE, PWM
1-PHASE, SKIP
2-PHASE, SKIP
1
10
100
LOAD CURRENT (A)
NO-LOAD SUPPLY CURRENT
vs. INPUT VOLTAGE (2-PHASE PWM MODE)
100
EFFICIENCY
vs. LOAD CURRENT (VOUT = 1.5V)
100
90
80
70
60
50
40
0.1
VIN = 12V
VOUT = 1.5V
1-PHASE, PWM
2-PHASE, PWM
1-PHASE, SKIP
2-PHASE, SKIP
1
10
100
LOAD CURRENT (A)
NO-LOAD SUPPLY CURRENT
vs. INPUT VOLTAGE (SKIP MODE)
10
ICC
1
IDD
0.1
IIN
0.01
0.001
0
4 8 12 16 20 24
INPUT VOLTAGE (V)
CURRENT-SENSE OFFSET
vs. LOAD CURRENT (2-PHASE PWM MODE)
1.0
IDD
10
IDD
IIN
10
IIN
0.5
0
ICC
1
0 4 8 12 16 20 24
INPUT VOLTAGE (V)
ICC
1
0 4 8 12 16 20 24
INPUT VOLTAGE (V)
-0.5
-1.0
0
5 10 15 20 25 30
LOAD CURRENT (A)
_______________________________________________________________________________________ 7
Share Link: 