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