AAT3141
High Efficiency 1X/1.5X/2X Charge Pump
for White LED Applications
Typical Characteristics
Unless otherwise noted, V
IN
= 3.5V, C
IN
= C
CP
= C
1
= C
2
= 1µF, T
A
= 25°C.
Line Response
(1X Mode, 4x19mA Load)
Line Response
(1X Mode, 4x30mA Load)
V
IN
(0.5V/div)
V
LED
(20mV/div)
V
CP
(0.5V/div)
I
D
(10mA/div)
Time (1ms/div)
V
IN
(0.5V/div)
V
LED
(20mV/div)
V
CP
(0.5V/div)
I
D
(10mA/div)
Time (1ms/div)
Line Response
(1.5X Mode, 4x19mA Load)
V
IN
(0.5V/div)
V
LED
(20mV/div)
V
CP
(0.5V/div)
I
D
(10mA/div)
Time (1ms/div)
Line Response
(1.5X Mode, 4x30mA Load)
V
IN
(0.5V/div)
V
LED
(20mV/div)
V
CP
(0.5V/div)
I
D
(10mA/div)
Time (1ms/div)
Load Characteristics
(1.5X Mode, 4x15mA Load)
Load Characteristics
(1.5X Mode, 4x30mA Load)
V
F
(20mV/div)
I
IN
(10mA/div)
V
CP
(20mV/div)
V
F
(20mV/div)
I
IN
(10mA/div)
V
CP
(20mV/div)
μ
Time (1μs/div)
μ
Time (1μs/div)
6
3141.2007.03.1.3
AAT [ ADVANCED ANALOG TECHNOLOGY, INC. ]
