AME, Inc.
AME5142
Start-Up / Shutdown
White LED Boost Converter
In Tiny Package
Typical Switching Waveform
1
1
2
2
3
3
200µS / div
1µS / div
V
IN
= 5.5V; 6 LEDs
I
OUT
= 20mA
1) EN = 2V / div, DC
2) Inductor Current, 500mA / div, DC
3) V
OUT
, 10V / div, DC
Typical Switching Waveform
V
IN
= 2.7V; 6 LEDs
I
OUT
= 20mA
1) V
SW
= 10V / div, DC
2) V
OUT
, 20mV / div, AC
3) Input Current, 100mA / div, DC
Inductor = 10µH, C
OUT
= 1µF
1
2
3
1µS / div
V
IN
= 5.5V; 6 LEDs
I
OUT
= 20mA
1) V
SW
= 10V / div, DC
2) V
OUT
, 20mV / div, AC
3) Input Current, 100mA / div, DC
Inductor = 10µH, C
OUT
= 1µF
14
Rev. A.01