AAT3104 Datasheet, PDF (6/15 Pages) Advanced Analogic Technologies – Low Cost 1x/2x 4 Channel Charge Pump WLED Driver

ChargePump^TM
PRODUCT DATASHEET
AAT3104178
Low Cost 1x/2x 4 Channel Charge Pump WLED Driver
Typical Characteristics
V_IN = 3.6V, C_IN = C_OUT = C1 = 1μF; T_A = 25°C, unless otherwise noted.
Current Matching vs. Temperature
(AAT3104-2; Code = 1)
33.0
D1
32.5
D2
32.0
D3
D4
31.5
31.0
30.5
30.0
29.5
29.0
-40
-15
10
35
60
85
Temperature (°C)
Efficiency vs. Input Voltage
(I_LED = 31mAx4; Voltage Sweep Upwards)
90
VF = 2.7V
80
VF = 3.0V
VF = 3.3V
70
VF = 3.6V
60
50
40
30
2.7
3.1
3.5
3.9
4.3
4.7
5.1
5.5
Input Voltage (V)
Efficiency vs. Input Voltage
(I_LED = 31mAx4; Voltage Sweep Downwards)
90
80
70
60
50
VF = 2.7V
VF = 3.0V
40
V_F = 3.3V
VF = 3.6V
30
2.7
3.1
3.5
3.9
4.3
4.7
5.1
5.5
Input Voltage (V)
Quiescent Current vs. Input Voltage
6.5
6.0
5.5
5.0
4.5
4.0
3.5
3.0
85°C
2.5
25°C
-40°C
2.0
2.7
3.1
3.5
3.9
4.3
4.7
5.1
5.5
Input Voltage (V)
Shutdown Current vs. Temperature
25
VIN = 5.5V
20
VIN = 2.7V
15
10
5
0
-40
-15
10
35
60
85
Temperature (°C)
Frequency vs. Temperature
850
840
830
820
810
800
790
780
770
760
750
-40
-15
10
35
60
85
Temperature (°C)
6
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3104.2008.09.1.0