Diodes AP3156 - Manual (Page 6)

AP3156
HIGH EFFICIENCY 1X/1.5X/2X CHARGE PUMP
FOR WHITE LED APPLICATIONS
AP3156 Rev. 1 6 of 15 SEPTEMBER 2009
www.diodes.com © Diodes Incorporated
Typical Performance Characteristics
Efficiency vs. Supply Voltage Turn-On to 1X Mode
(V
IN
= 4.2V; 20mA Load)
Turn-On from 1.5X Mode
(V
IN
= 3.5V; 20mA Load)
Turn-On to 2X Mode
(V
IN
= 2.7V; 20mA Load)
Turn-Off from 1.5X Mode
(V
IN
= 3.5V; 20mA Load)
Current Matching vs. Temperature
VF=3.
3V
VF=3.0V
VF=2.8V