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.
Charge Pump to Load Switch
(1.5X Mode, 3x19mA Load)
Charge Pump to Load Switch
(1.5X Mode, 3x30mA Load)
VIN
(500mV/div)
VIN
(500mV/div)
VCP
(1V/div)
VCP
(1V/div)
VDIODE
(500mV/div)
VDIODE
(500mV/div)
IIN
(50mA/div)
IIN
(50mA/div)
Time (5ms/div)
Time (5ms/div)
Charge Pump to Load Switch
(2X Mode, 3x19mA Load)
Charge Pump to Load Switch
(2X Mode, 3x30mA Load)
VIN
(500mV/div)
VIN
(500mV/div)
VCP
(1V/div)
VCP
(1V/div)
VDIODE
(500mV/div)
VDIODE
(500mV/div)
IIN
(50mA/div)
IIN
(50mA/div)
Time (5ms/div)
Time (5ms/div)
Load Switch to Charge Pump
(1.5X Mode, 3x19mA Load)
Load Switch to Charge Pump
(1.5X Mode, 3x30mA Load)
VIN
(1V/div)
VIN
(1V/div)
VCP
(4V/div)
VCP
(4V/div)
VDIODE
(500mV/div)
VDIODE
(500mV/div)
IIN
(50mA/div)
IIN
(50mA/div)
Time (2ms/div)
Time (2ms/div)
3142.2007.03.1.2
7
AAT [ ADVANCED ANALOG TECHNOLOGY, INC. ]
