AAT2806
Dual High Efficiency Charge Pump
for White LED and Flash Applications
Typical Characteristics–Flash Driver Charge Pump Section
Output Ripple Voltage vs. Time
(IOUT = 50mA @ VIN = 3.5V)
Output Ripple Voltage vs. Time
(IOUT = 100mA @ VIN = 3.5V)
VIN
(10mV/div)
VIN
(10mV/div)
VOUT
(10mV/div)
VOUT
(20mV/div)
IIN
(10mA/div)
IIN
(10mA/div)
Time (500ns/div)
Time (500ns/div)
Supply Current vs. Supply Voltage
Oscillator Frequency vs. Supply Voltage
3.00
2.75
2.50
2.25
2.00
1.75
1.50
1.25
1.00
1.30
1.25
1.20
1.15
1.10
IOUT = 0μA
C3 = 1μF
VEN_FL = VIN
+25°C
+85°C
-40°C
2.5
3.0
3.5
4.0
4.5
5.0
2.7
3.2
3.7
4.2
4.7
Supply Voltage (V)
Supply Voltage (V)
6
2806.2006.04.1.8