AAT3151B データシートの表示（PDF） - Advanced Analogic Technologies
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AAT3151B
Advanced Analogic Technologies
AAT3151B Datasheet PDF : 13 Pages
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ChargePumpTM
PRODUCT DATASHEET
AAT3151B
High Efficiency 1X/1.5X Charge Pump For White LED Applications
Typical Characteristics
3151B Backlight Efficiency vs. Supply Voltage
100
90
20mA
80
70
60
50
1mA
10.2mA
40
30
2.7 2.9 3.1 3.3 3.5 3.7 3.9 4.1 4.3 4.5 4.7 4.9 5.1 5.3 5.5
Supply Voltage (V)
EN
(2V/div)
CP
(2V/div)
VSINK
(500mV/div)
IIN
(200mA/div)
Turn-On to 1X Mode
(VIN = 4.2V; 20mA Load)
Time (100µs/div)
EN
(2V/div)
CP
(2V/div)
VSINK
(500mV/div)
IIN
(200mA/div)
Turn-On to 1.5X Mode
(VIN = 3.5V; 20mA Load)
Time (100µs/div)
EN
(2V/div)
VF
(1V/div)
IIN
(100mA/div)
Turn-Off from 1.5X Mode
(VIN = 3.5V; 20mA Load)
Time (500µs/div)
Current Matching vs. Temperature
20.4
20.2 Channel 2
20.0
Channel 4
19.8
19.6
Channel 3 Channel 1
19.4
19.2
19.0
-40
-20
0
20
40
60
80
Temperature (°C)
3151B.2008.02.1.1
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