AAT3167
High Efficiency 1X/1.5X/2X Charge
Pump for White LED Applications
Typical Characteristics
CIN = COUT = C1 = C2 = 1.0µF; TA = 25°C, VIN = 3.6V, unless otherwise noted.
Load Characteristics
(VIN = 3.9V; 1.5X Mode; 18mA Load)
Load Characteristics
(VIN = 2.9V; 2X Mode; 18mA Load)
VIN
(40mV/div)
VIN
(40mV/div)
CP
(40mV/div)
CP
(40mV/div)
VSINK
(40mV/div)
VSINK
(40mV/div)
Time (500ns/div)
Time (500ns/div)
Load Characteristics
(VIN = 4.2V; 1.5X Mode; 27mA Load)
Load Characteristics
(VIN = 3.3V; 2X Mode; 27mA Load)
VIN
(40mV/div)
VIN
(40mV/div)
CP
(40mV/div)
CP
(40mV/div)
VSINK
(40mV/div)
VSINK
(40mV/div)
Time (500ns/div)
Time (500ns/div)
Input Ripple vs. Input Voltage
18
16
14
12
10
8
27mA
18mA
6
14mA
4
2
0
2.5
2.7
2.9
3.1
3.3
3.5
3.7
3.9
4.1
4.3
4.5
Input Voltage (V)
6
3167.2007.03.1.4
AAT [ ADVANCED ANALOG TECHNOLOGY, INC. ]
