MAX8770GTL Ver la hoja de datos (PDF) - Maxim Integrated
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MAX8770GTL Datasheet PDF : 47 Pages
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CONFIDENTIAL INFORMATION – RESTRICTED TO INTEL® IMVP-6 LICENSEES
MAX8770/MAX8771/MAX8772 Dual-Phase, Quick-
PWM Controller for IMVP-6+ CPU Core Power Supplies
Typical Operating Characteristics
(Circuit of Figure 1. VIN = 12V, VCC = VDD, SHDN = PSI = 5V, DPRSLPVR = GND, D0–D6 set for 1.1500V, TA = 25°C, unless other-
wise specified.)
OUTPUT VOLTAGE vs. LOAD CURRENT
(VOUT(HFM) = 1.2875V)
1.4
1.3
1.2
1.1
0
10
20
30
40
50
LOAD CURRENT (A)
EFFICIENCY vs. LOAD CURRENT
(VOUT(HFM) = 1.2875V)
100
12V
90
7V
80
20V
70
60
50
0.1
1
10
100
LOAD CURRENT (A)
OUTPUT VOLTAGE vs. LOAD CURRENT
(VOUT(LFM) = 0.9500V)
0.98
0.96
SKIP MODE
0.94
PWM MODE
0.92
0.90
0.88
0
PSI = GND
4
8
12
16
20
LOAD CURRENT (A)
EFFICIENCY vs. LOAD CURRENT
(VOUT(LFM) = 0.9500V)
100
OUTPUT VOLTAGE
vs. LOAD CURRENT (VOUT(C4) = 0.6500V)
0.68
EFFICIENCY vs. LOAD CURRENT
(VOUT(C4) = 0.6500V)
100
90
80
70
60
50
0.1
12V
7V
20V
PSI - GND
DPRSLPVR = GND
DPRSLPVR = VCC
1
10
100
LOAD CURRENT (A)
0.66
0.64
0.62
0.60
0.58
0
4
8
12
16
20
LOAD CURRENT (A)
90
80
70
60
50
0.1
12V
7V
20V
DPRSLPVR = VCC
1
10
100
LOAD CURRENT (A)
SWITCHING FREQUENCY
vs. LOAD CURRENT
400
VOUT(LFM) = 0.9500V
300
VOUT(HFM) = 1.2875V
NO-LOAD SUPPLY CURRENT
vs. INPUT VOLTAGE (VOUT(HFM) = 1.2875V)
150
125
100
IIN
200
75
100
0
0
DPRSLPVR = GND
DPRSLPVR = VCC
10
20
30
40
50
LOAD CURRENT (A)
50
25
0
0
ICC + IDD
5
10
15
20
25
INPUT VOLTAGE (V)
10 ______________________________________________________________________________________
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