ISL8204M Просмотр технического описания (PDF) - Intersil
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ISL8204M Datasheet PDF : 20 Pages
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ISL8204M, ISL8206M
CPVCC
VIN
(+5V/+12V)
CIN (BULK)
220µF
CIN (CER)
10µF
25V
x2
PVCC
VIN
VOUT
ISL8204M,
ISL8206M
PHASE
COMP/EN
ISET
FB
PGND
COUT1
22µF
6.3V
x3
RFB
4.87k
VOUT
1.8V
10A
COUT2
330µF
FIGURE 2. TEST CIRCUIT FOR ALL PERFORMANCE AND DERATING GRAPHS
Typical Performance Characteristics
Efficiency Performance
TA = +25°C, VIN = PVCC (PVCC = 5V for 18VIN), CIN = 220µFx1, 10µF/Ceramic x 2,
COUT = 330µF (ESR = 10mΩ), 22µF/Ceramic x 3. The efficiency equation is:
Efficiency = O------u---t---p---u----t----P-----o----w-----e----r = P-----O----U----T-- = (---V----O-----U----T----x---I--O----U-----T----)
Input Power
PIN
(VINxIIN)
100
95
90
85
80
3.3V
2.5V
75
1.5V
70
1.2V
65
0.8V
60
0
1
2
3
4
5
6
LOAD CURRENT (A)
FIGURE 3. EFFICIENCY vs LOAD CURRENT (5VIN)
100
95
90
85
80
75
70
3.3V
2.5V
65
5.0V
1.5V
1.2V 0.8V
60
0
1
2
3
4
5
6
LOAD CURRENT (A)
FIGURE 4. EFFICIENCY vs LOAD CURRENT (12VIN)
100
95
90
85
80
75
70
3.3V
5.0V
2.5V 1.5V
1.2V
65
60
0
1
2
3
4
5
6
LOAD CURRENT (A)
FIGURE 5. EFFICIENCY vs LOAD CURRENT (18VIN)
7
VOUT
IOUT
VIN = 12V
VOUT = 1.2V
IOUT = 0A to 5A
FIGURE 6. 1.2V TRANSIENT RESPONSE
FN6999.1
February 25, 2010
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