AAT3142
High Efficiency 1X/1.5X/2X Charge Pump
for White LED Applications
Typical Characteristics
VIN = 3.5V, CIN = CCP = C1 = C2 = 1µF, TA = 25°C, unless otherwise noted.
Line Response
(1X Mode, 3x19mA Load)
Line Response
(1X Mode, 3x30mA Load)
VIN
(0.5V/div)
VIN
(0.5V/div)
VLED
(20mV/div)
VLED
(20mV/div)
VCP
(0.5V/div)
VCP
(0.5V/div)
ID
(10mA/div)
ID
(10mA/div)
Time (1ms/div)
Time (1ms/div)
Line Response
(1.5X Mode, 3x19mA Load)
Line Response
(1X Mode, 3x30mA Load)
VIN
(0.5V/div)
VIN
(0.5V/div)
VLED
(20mV/div)
VLED
(20mV/div)
VCP
(0.5V/div)
VCP
(0.5V/div)
ID
(10mA/div)
ID
(10mA/div)
Time (1ms/div)
Time (1ms/div)
Load Characteristics
(1.5X Mode, 3x15mA Load)
Load Characteristics
(1.5X Mode, 3x30mA Load)
VIN
(20mV/div)
VIN
(20mV/div)
IIN
(10mA/div)
IIN
(10mA/div)
VCP
(20mV/div)
VCP
(20mV/div)
Time (1µs/div)
Time (1µs/div)
8
3142.2007.03.1.2
AAT [ ADVANCED ANALOG TECHNOLOGY, INC. ]
