AME, Inc.
AME5142
Dimming Control for Driving 6LEDs
White LED Boost Converter
In Tiny Package
Dimming Control for Driving 6LEDs
2
2
3
3
1
1
4µS / div
4µS / div
V
IN
= 2.7V; 6 LEDs
I
OUT
= 20mA
2) EN = 1V / div, DC f = 200KHz
3) V
OUT
, 10V / div, DC
1) V
SW
= 10V / div, DC
Start-Up / Shutdown
V
IN
= 5.5V; 6 LEDs
I
OUT
= 20mA
2) EN = 1V / div, DC f = 200KHz
3) V
OUT
, 10V / div, DC
1) V
SW
= 10V / div, DC
Start-Up / Shutdown
1
1
2
2
3
3
200µS / Div
200µS / div
V
IN
= 2.7V; 1 LEDs
I
OUT
= 20mA
1) EN = 2V/div, DC
2) Inductor Current, 100mA / div, DC
3) V
OUT
, 2V / div, DC
V
IN
= 2.7V; 6 LEDs
I
OUT
= 20mA
1) EN = 2V / div, DC
2) Inductor Current, 500mA / div, DC
3) V
OUT
, 10V / div, DC
Rev. A.01
13
AME [ ANALOG MICROELECTRONICS ]
