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AAT3159 Datasheet(PDF) 5 Page - Advanced Analogic Technologies

Part No. AAT3159
Description  High Efficiency 1X/1.5X/2X Charge Pump for White LED Applications
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Maker  ANALOGICTECH [Advanced Analogic Technologies]
Homepage  http://www.analogictech.com
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AAT3159 Datasheet(HTML) 5 Page - Advanced Analogic Technologies

 
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AAT3159
High Efficiency 1X/1.5X/2X Charge Pump for White LED Applications
ChargePumpTM
PRODUCT DATASHEET
3159.2007.10.1.0
5
www .analogictech.com
AAT3159
High Efficiency 1X/1.5X/2X Charge Pump for White LED Applications
ChargePumpTM
PRODUCT DATASHEET
3159.2007.10.1.0
5
www .analogictech.com
Typical Characteristics
VIN = 3.6V; CIN = COUT = C1 = C2 = 1.0μF; TA = -40°C to +85°C, unless otherwise noted. Typical values are
TA = 25°C.
Efficiency vs. Input Voltage
Input Voltage (V)
30
40
50
60
70
80
90
100
2.7
2.9
3.1
3.3
3.5
3.7
3.9
4.1
4.3
4.5
6mA/channel
VF = 3V
500µA/channel
VF = 2.7V
20mA/channel
VF = 3.4V
Turn-On to 1X Mode
(VIN = 4.2V; 20mA/Channel Load)
Time (100µs/div)
VEN/SET
(1V/div)
VOUT
(2V/div)
IIN
(100mA/div)
VDX
(1V/div)
Turn-On to 1.5X Mode
(VIN = 3.5V; 20mA/Channel Load)
Time (100µs/div)
VEN/SET
(1V/div)
VOUT
(4V/div)
IIN
(200mA/div)
VDX
(1V/div)
Turn-On to 2X Mode
(VIN = 2.8V; 20mA/Channel Load)
Time (100µs/div)
VEN/SET
(1V/div)
VOUT
(4V/div)
IIN
(500mA/div)
VDX
(500mV/div)
Turn-Off from 1.5X Mode
(VIN = 3.5V; 20mA/Channel Load)
Time (100µs/div)
VEN/SET
(1V/div)
VF
(4V/div)
IIN
(100mA/div)
LED Current vs. Temperature
(20mA/Channel)
Temperature (
°°C)
18.0
18.5
19.0
19.5
20.0
20.5
21.0
21.5
22.0
-40
-15
10
35
60
85
ID1
ID4
ID2
ID3


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