AAT2806 Datasheet, PDF (5/16 Pages) Advanced Analogic Technologies – Dual High Efficiency Charge Pump for White LED AND Flash Applications

AAT2806
Dual High Efficiency Charge Pump
for White LED and Flash Applications
Typical Characteristics– Flash Driver Charge Pump Section
Output Voltage vs. Output Current
(V_{OUT_FL} = 4.5V; EN_FL = V_IN; EN/SET = GND)
4.60
4.56
4.52
3.6V
4.48
4.44
4.40
0.1
3.0V 3.3V
2.7V
1.0
10.0
100.0
Output Current (mA)
1000.0
Maximum Current Pulse vs. Supply Voltage
(V_{OUT_FL} = 4.5V; EN_FL = V_IN; EN/SET = GND)
450
One-shot pulse duration = 250ms
400 _{VOUT > 4.0V}
350
300
250
200
150
100
50
0
3.0 3.1 3.2 3.3 3.4 3.5 3.6 3.7 3.8 3.9 4.0 4.1 4.2
Supply Voltage (V)
EN_FLSH
(1V/div)
Start-Up Time
(50mA Load)
EN_FLSH
(1V/div)
Start-Up Time
(100mA Load)
V_{OUT_FL}
(1V/div)
Time (100µs/div)
V_{OUT_FL}
(1V/div)
Time (100µs/div)
Load Response vs. Time
(50mA Load)
V_{OUT_FL}
(10mV/div)
V_IN = 3.5V
I_OUT
(20mA/div)
Time (5ms/div)
Load Response vs. Time
(100mA Load)
V_IN = 3.5V
V_{OUT_FL}
(10mV/div)
I_OUT
(50mA/div)
Time (5ms/div)
2806.2006.04.1.8
5