AAT2803 Datasheet, PDF (6/16 Pages) Advanced Analogic Technologies – Six-Channel White LED Backlight Charge Pump with Flash

AAT2803
Six-Channel White LED Backlight
Charge Pump with Flash
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)
100μs/div
V_{OUT_FL}
(1V/div)
100μs/div
Load Response vs. Time
(50mA Load)
V_{OUT_FL}
(10mV/div)
V_IN = 3.5V
I_OUT
(20mA/div)
5ms/div
Load Response vs. Time
(100mA Load)
V_IN = 3.5V
V_{OUT_FL}
(10mV/div)
I_OUT
(50mA/div)
5ms/div
6
2803.2006.12.1.6