ISL97631 Ver la hoja de datos (PDF) - Renesas Electronics
Número de pieza
componentes Descripción
Fabricante
ISL97631 Datasheet PDF : 8 Pages
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ISL97631
Typical Application
VIN
2.7V~5.5V
C1
1µF
OFF/ON
L1
22µH
VIN
LX
VOUT
ISL97631
ENAB FB
GND
LEDs
RSET
4.75
C2
0.22µF
FIGURE 1. TYPICAL APPLICATION CIRCUIT
Typical Performance Curves
700
600
500
400
300
200
100
0
0
2
4
6
VIN (V)
FIGURE 3. QUIESCENT CURRENT vs VIN (ENAB = hi)
18.33
18.32
18.31
18.30
18.29
18.28
18.27
18.26
18.25
18.24
18.23
2.5
3.5
4.5
5.5
VIN (V)
FIGURE 5. LINE REGULATION
90 22µH, VIN = 4V
85
80
75
70
65
60
55
50
0
5
10
15
20
25
30
ILED (mA)
FIGURE 2. EFFICIENCY vs LED CURRENT (VIN = 4V)
18.244
18.242
18.240
18.238
18.236
18.234
18.232
18.230
18.228
0
5
10
15
20
VOUT (V)
FIGURE 4. LOAD REGULATION (VIN = 4V)
1.37
1.36
1.35
1.34
1.33
1.32
1.31
1.30
1.29
1.28
1.27
-60 -40 -20 0 20 40 60
TEMPERATURE (°C)
80 100
FIGURE 6. SWITCHING FREQUENCY vs TEMPERATURE
FN7370 Rev 1.00
December 21, 2005
Page 3 of 8
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