AAT3105 Datasheet, PDF (5/15 Pages) Advanced Analogic Technologies – Low Cost 1x/2x 4 Channel Charge Pump WLED Driver

ChargePump^TM
PRODUCT DATASHEET
AAT3105178
Low Cost 1x/2x 4 Channel Charge Pump WLED Driver
Typical Characteristics
V_IN = 3.6V, C_IN = C_OUT = C_P = 1μF; T_A = 25°C, unless otherwise noted.
Shutdown Current vs. Temperature
0.10
0.08
0.06
0.04
0.02
0.00
-40
VIN = 5.5V
VIN = 2.7V
-15
10
35
60
85
Temperature (°C)
Quiescent Current vs. Input Voltage
(1x Mode)
7.0
6.0
5.0
4.0
3.0
85°C
2.0
25°C
-40°C
1.0
2.7
3.1
3.5
3.9
4.3
4.7
5.1
5.5
Supply Voltage (V)
No Load Operating Current vs. Input Voltage
(2x Mode)
6.4
85°C
6.2
25°C
-40°C
6.0
5.8
5.6
5.4
5.2
2.7
3.1
3.5
3.9
4.3
4.7
5.1
5.5
Supply Voltage (V)
Frequency vs. Temperature
900
880
860
840
820
800
-40
-20
0
20
40
60
80
Temperature (°C)
Current Matching vs. Temperature
33
32
31
30
29
28
27
-40
D1
D2
D3
D4
Matching
-15
10
35
60
Temperature (°C)
1.2%
1.0%
0.8%
0.6%
0.4%
0.2%
0.0%
85
LED Current Control vs. PWM Duty Ratio
(FPWM = 25KHz)
30
24
18
12
6
0
10 20 30 40 50 60 70 80 90 100
Duty Ratio (%)
3105.2008.10.1.0
www.analogictech.com
5