High Current LED Flash Driver Charge Pump IC
Typical Characteristics
V
IN
= 3.6V, C
IN
= 4.7µF, C
OUT
= 2.2µF, C
1
= C
2
= 1µF, T
A
= 25°C, unless otherwise noted.
Load Characteristic
(V
IN
= 3.0V; 1.5X Mode; 50mA/ch Load)
AAT3170
Load Characteristic
(V
IN
= 3.6V; 1.5X Mode; 152mA/ch Load)
V
IN
(100mV/div)
V
OUT
(200mV/div)
V
SINK
(200mV/div)
V
IN
(100mV/div)
V
OUT
(200mV/div)
V
SINK
(200mV/div)
Time (2µs/div)
Time (2µs/div)
Load Characteristic
(V
IN
= 2.8V; 2X Mode; 152mA/ch Load)
4.8
Voltage Mode Line Regulation
Output Voltage (V)
V
IN
(100mV/div)
V
OUT
(200mV/div)
4.7
4.6
4.5
4.4
4.3
4.2
4.1
4.0
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
I
OUT
= 10mA
I
OUT
= 80mA
I
OUT
= 120mA
I
OUT
= 30mA
V
SINK
(200mV/div)
Time (2µs/div)
Supply Voltage (V)
Voltage Mode Load Regulation
4.8
1.8
1.6
Flash Timer Duration
(C
T
= 0.1µF; Data = 1)
Output Voltage (V)
4.7
Flash Time (s)
85°C
4.6
1.4
1.2
1.0
0.8
0.6
0.4
V
IN
= 4.2V
4.5
4.4
4.3
4.2
0
50
100
150
200
V
IN
= 3.7V
25°C
-40°C
V
IN
= 3.3V
250
300
2.7 2.9 3.1 3.3 3.5 3.7 3.9 4.1 4.3 4.5 4.7 4.9 5.1 5.3 5.5
Load Current (mA)
Supply Voltage (V)
6
3170.2006.10.1.0
ANALOGICTECH [ ADVANCED ANALOGIC TECHNOLOGIES ]
