Diodes AL3158 - Manual (Page 4)

AL3158
HIGH EFFICIENCY 1x/2x CHARGE PUMP
FOR WHITE LED APPLICATIONS
AL3158
Document number: DS35047 Rev. 2 - 2
4 of 10
www.diodes.com
January 2011
© Diodes Incorporated
NEW PROD
UC
T
Typical Performance Characteristics
Turn-On to 1x Mode
50us/div
Turn-On to 2x Mode
100us/div
Turn-Off from 1x Mode
200ms/div
Turn-Off from 2x Mode
200ms/div
Load Characteristics in 2x Mode
1us/div
PWM Dimming Control (Duty Cycle=50%)
10us/div
Vout
2V/div
EN1,2,3
2V/div
V
IN
=4.2V
T
A
=25°C
I
L
=20mA
Iin
200mA/div
Cp
2V/div
Vout
2V/div
EN1,2,3
2V/div
Iin
200mA/div
Cp
2V/div
V
IN
=3.0V
T
A
=25°C
I
L
=20mA
Cp
2V/div
Vout
2V/div
EN1,2,3
2V/div
Iin
200mA/div
Cp
2V/div
V
IN
=3.0V
T
A
=25°C
I
L
=20mA
Iin
200mA/div
V
IN
=4.2V
T
A
=25°C
I
L
=20mA
EN1,2,3
2V/div
Vout
2V/div
V
IN
=3.0V
T
A
=25°C
I
L
=20mA
Vin
200mV
AC /div
Vout
200mV
AC /div
Iin
100mA
AC /div
Iin
100mA/div
V
IN
=3.6V
Freq=20kHz
Duty Cycle=50% T
A
=25°C
EN
3.6V/div
Idx
50mA/div