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AAT3143 Datenblatt(Datasheet) 5 Page - Advanced Analogic Technologies

Teile-Nr. AAT3143
Beschreibung  High Efficiency 1X/1.5X/2X Charge Pump with PWM Control for White LED Applications
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Hersteller  ANALOGICTECH [Advanced Analogic Technologies]
Homepage  http://www.analogictech.com
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 5 page
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Typical Characteristics
VIN = 3.5V, CIN = CCP = C1 = C2 = 1µF, TA = 25°C, unless otherwise noted.
LED Turn-On Delay
(PWM Frequency = 5kHz)
Time (1µs/div)
VEN
(2V/div)
VLED
(2V/div)
ILED
(10mA/div)
LED Turn-On Delay
(PWM Frequency = 500Hz)
Time (5µs/div)
VEN
(2V/div)
VLED
(2V/div)
ILED
(10mA/div)
Turn-On to 2X Mode
(VIN = 2.7V)
Time (50µs/div)
VEN
(1V/div)
VCP
(2V/div)
VLED
(2V/div)
IIN
(50mA/div)
Turn-On to 1.5X Mode
(VIN = 3.5V)
Time (50µs/div)
VEN
(1V/div)
VCP
(2V/div)
VLED
(2V/div)
IIN
(50mA/div)
Turn-On to 1X Mode
(VIN = 4.2V)
Time (50µs/div)
VEN
(1V/div)
VCP
(2V/div)
VLED
(2V/div)
IIN
(100mA/div)
Efficiency
(100% Duty Cycle, 4x20mA/channel)
Input Voltage (V)
30
40
50
60
70
80
90
100
2.7 2.8 2.9 3.0 3.1 3.2 3.3 3.4 3.5 3.6 3.7 3.8 3.9 4.0 4.1 4.2
AAT3143
High Efficiency 1X/1.5X/2X Charge Pump with
PWM Control for White LED Applications
3143.2006.05.1.0
5




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