AAT2801
Multi-Mode Charge Pump for
White LED Backlight and Flash Applications
Typical Characteristics–Flash Driver Charge Pump Section
VIN = 3.5V, CIN = 2.2µF, C3 = CF = 1.0µF, TA = 25°C, unless otherwise noted.
Startup
VEN Threshold vs. Supply Voltage
1.00
0.95
0.90
0.85
0.80
0.75
0.70
0.65
0.60
0.55
0.50
ENABLE
(1V/div)
VIH
I
LOAD = 150mA @ VIN = 3.3V
ILOAD = 100mA @ VIN = 3.0V
VIL
ILOAD = 150mA @ VIN = 3.3V
VOUT
(1V/div)
2.7
3.1
3.5
3.9
4.3
4.7
5.1
5.5
Supply Voltage (V)
Time (100µs/div)
Normalized Output Voltage vs. Temperature
2.0
IOUT = 25mA
1.5
1.0
0.5
0.0
-0.5
-1.0
-1.5
-2.0
-50
-30
-10
10
30
50
70
90
Temperature (°C)
12
2801.2006.04.1.3