sp6415 Exar Corporation, sp6415 Datasheet - Page 10

• Manufacturer Part Number: sp6415
• Description: Integrated White Led Driver With Organic Led Display Power Supply
• Manufacturer: Exar Corporation

Feb27-07 Rev K
.25
.24
.23
.22
.2
.20
.
3

2
3

2
V
T= 0µS / div
Inductor=0µH, C
V
T= 20µS /div
I
) Load 2mA to 5mA to 2mA ,DC.
2) V
3) Inductor Current 200mA / div,DC
OUT
-40
) V
2) V
3) Inductor Current, 200mA / div,DC
OUT
OUT
=0mA (R
=2V, V
= 2V , V
OUT
SW
OUT
V
Typical Switching Waveform
FB Trip Point vs Temperature
IN
= 20V/div,DC
, 00mA / div,AC
=3.6V
-20
, 00mV / div,AC
IN
FB
IN
=2.5V; 4LEDs
Step Response
=3.6V
Temperature (
=20 Ω)
0
OUT
SUB Display
=4.7µF
20
40
o
C)
Integrated White LED Driver With Organic LED Display Power Supply
60
V
IN
=4.2V
80
85
0
22.8
22.6
22.4
22.2
2.8
2.6
2.4
2.2
2.0
23.0
22.0
Typical Performance Characteristics
3
3

2

2
-40
Output Over Voltage Protection vs. Temp.
V
Inductor=0µH, C
V
Load = 4LEDs, T=2ms/div
I
) EN , V/ div.DC
2) V
3) Inductor Current 00mA/div,DC
OUT
) V
2) V
3) Inductor Current, 200mA / div,DC
T= 0µS / div
OUT
OUT
=20mA (R
=2V, V
=2V , V
-20
OUT
SW
OUT
Typical Switching Waveform
= 0V/div,DC
, 0/div,DC
, 00mV / div,AC
Temperature (
Start-Up/Shutdown
0
IN
IN
FB
=3.6V; 4LEDs
=2.7V
=0Ω)
OUT
20
=4.7µF
40
o
C)
© 2007 Sipex Corporation
V
60
IN
=3.6V
80
85