Dual High Efficiency Charge Pump
for White LED and Flash Applications
Typical Characteristics–White LED Backlight Driver Section
Load Characteristics
(V
IN
= 3.7V; 1.5X Mode; 15mA Load)
AAT2805
Load Characteristics
(V
IN
= 2.7V; 2X Mode; 15mA Load)
V
IN
(40mV/div)
CP
(40mV/div)
V
SINK
(40mV/div)
V
IN
(40mV/div)
CP
(40mV/div)
V
SINK
(40mV/div)
Time (500ns/div)
Time (500ns/div)
Load Characteristics
(V
IN
= 3.9V; 1.5X Mode; 20mA Load)
Load Characteristics
(V
IN
= 2.9V; 2X Mode; 20mA Load)
V
IN
(40mV/div)
CP
(40mV/div)
V
SINK
(40mV/div)
V
IN
(40mV/div)
CP
(40mV/div)
V
SINK
(40mV/div)
Time (500ns/div)
Time (500ns/div)
Load Characteristics
(V
IN
= 4.2V; 1.5X Mode; 30mA Load)
V
IN
(40mV/div)
CP
(40mV/div)
Load Characteristics
(V
IN
= 3.2V; 2X Mode; 30mA Load)
V
IN
(40mV/div)
CP
(40mV/div)
V
SINK
(40mV/div)
V
SINK
(40mV/div)
Time (500ns/div)
Time (500ns/div)
8
2805.2006.04.1.7
AAT [ ADVANCED ANALOG TECHNOLOGY, INC. ]
