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AAT3151 Datasheet(PDF) 5 Page - Advanced Analog Technology, Inc.

Part No. AAT3151
Description  High Efficiency 1X/1.5X/2X Charge Pump For White LED Applications
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Maker  AAT [Advanced Analog Technology, Inc.]
Homepage  http://www.aatech.com.tw
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AAT3151 Datasheet(HTML) 5 Page - Advanced Analog Technology, Inc.

 
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AAT3151
High Efficiency 1X/1.5X/2X Charge Pump
For White LED Applications
3151.2007.03.1.10
5
Typical Characteristics
Turn-On to 1X Mode
(VIN = 4.2V; 20mA Load)
Time (100µs/div)
EN
(2V/div)
CP
(2V/div)
IIN
(200mA/div)
VSINK
(500mV/div)
Efficiency vs. Supply Voltage
Supply Voltage (V)
0
10
20
30
40
50
60
70
80
90
100
2.6
2.8
2.9
3.1
3.2
3.4
3.6
3.7
3.9
4.0
4.2
4.1mA
VF = 2.9V
1mA
VF = 2.7V
10.2mA
VF = 3.1V
20mA
VF = 3.4V
Turn-On to 2X Mode
(VIN = 2.8V; 20mA Load)
Time (100µs/div)
EN
(2V/div)
CP
(2V/div)
IIN
(200mA/div)
VSINK
(500mV/div)
Turn-On to 1.5X Mode
(VIN = 3.5V; 20mA Load)
Time (100µs/div)
EN
(2V/div)
CP
(2V/div)
IIN
(200mA/div)
VSINK
(500mV/div)
Current Matching vs. Temperature
Temperature (
°°C)
19.0
19.2
19.4
19.6
19.8
20.0
20.2
20.4
-40
-20
0
20
40
60
80
Channel 2
Channel 3
Channel 1
Channel 4
Turn-Off from 1.5X Mode
(VIN = 3.5V; 20mA Load)
Time (500µs/div)
EN
(2V/div)
IIN
(100mA/div)
VF
(1V/div)


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