ISL97644 데이터 시트보기 (PDF) - Renesas Electronics
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ISL97644 Datasheet PDF : 15 Pages
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ISL97644
I
Typical Performance Curves
100
FOSC = 650kHz
90
80
FOSC = 1.2MHz
70
60
50
40
30
20
10
0
0
200
400
600
800
1000
IAVDD (mA)
FIGURE 1. AVDD EFFICIENCY vs IAVDD
1200
10.5
10.45
10.4
10.35
AVDD 150mA
AVDD 500mA
10.3
10.25
10.2
10.15
3
3.5
4.0
4.5
5.0
5.5
6.0
VIN (V)
FIGURE 3. LINE REGULATION AVDD vs VIN
3.4
3.3
3.3V OUTPUT, 100mA
3.2
3.3V OUTPUT, 350mA
3.1
3.0
2.9
2.85V OUTPUT, 100mA
2.8
2.85V OUTPUT, 350mA
2.7
2.6
2.5 2.5V OUTPUT, 100mA
2.5V OUTPUT, 350mA
2.4 3
4
5
6
VIN (V)
FIGURE 5. LINE REGULATION LDO_OUT vs VIN
FN9228 Rev 1.00
December 14, 2007
0
-0.1
-0.2
-0.3
FOSC = 650kHz
-0.4
-0.5
-0.6
FOSC = 1.2MHz
-0.7
-0.8
-0.9
0
200
400
600
800
1000 1200
IAVDD (mA)
FIGURE 2. AVDD LOAD REGULATION vs IAVDD
L = 10µH, COUT = 40µF, CCOMP = 2.2nF, RCOMP = 10k
IAVDD
AVDD (AC COUPLED)
FIGURE 4. BOOST CONVERTER TRANSIENT RESPONSE
0
-0.2
-0.4
ADJ = 0
-0.6
ADJ = OPEN
ADJ = LDO_OUT
-0.8
-1.0
-1.2
0
100
200
300
400
IO (mA)
FIGURE 6. LDO LOAD REGULATION vs IO
Page 6 of 15
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