AAT3105 Datasheet, PDF (6/15 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.
Efficiency vs. Input Voltage
100%
80%
60%
40%
VF = 2.7V
20%
VF = 3.0V
VF = 3.3V
VF = 3.6V
0%
2.7
3.1
3.5
3.9
4.3
4.7
5.1
5.5
Input Voltage (V)
800
750
700
650
600
550
500
450
400
350
300
2.7
EN/SET Input OFF Timeout
vs. Input Voltage
3.1
3.5
3.9
4.3
4.7
Input Voltage (V)
85°C
25°C
-40°C
5.1
5.5
EN Input High Threshold Voltage
vs. Input Voltage
1.2
1.0
0.8
0.6
0.4
85°C
25°C
-40°C
0.2
2.7
3.1
3.5
3.9
4.3
4.7
5.1
5.5
Input Voltage (V)
EN Input Low Threshold Voltage
vs. Input Voltage
1.2
1.0
0.8
0.6
0.4
85°C
25°C
-40°C
0.2
2.7
3.1
3.5
3.9
4.3
4.7
5.1
5.5
Input Voltage (V)
EN
(4V/div)
0
I_IN
(100mA/div) ⁰
V_D1
(2V/div)
0
V_OUT
(2V/div) ₀
Turn On to 1X Mode
(V_IN = 4.2V; 30mA/ch)
Time (100µs/div)
EN
(4V/div)
0
I_IN
(250mA/div) ⁰
V_D1
(2V/div)
0
V_OUT
(2V/div)
0
Turn On to 2X Mode
(V_IN = 3.2V; 30mA/ch)
Time (200µs/div)
6
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3105.2008.10.1.0