AAT3143ITP-T1 데이터 시트보기 (PDF) - Advanced Analogic Technologies
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AAT3143ITP-T1
Advanced Analogic Technologies
AAT3143ITP-T1 Datasheet PDF : 10 Pages
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PRODUCT DATASHEET
AAT3143
ChargePumpM High Efficiency 1X/1.5X/2X Charge Pump with PWM Control for White LED Applications
Typical Characteristics
VIN = 3.5V, CIN = CCP = C1 = C2 = 1µF, TA = 25°C, unless otherwise noted.
1.5X Mode PWM Characteristic
(5kHz at 50% Duty Cycle)
VEN
(2V/div)
ILED
(20mA/div)
IIN
(100mA/div)
VLED
(2V/div)
PWM Duty Cycle vs. LED Current
20
18
16
14
12
10
8
6
4
2
0
0
10 20
100Hz
1kHz
10kHz
30 40 50 60 70 80 90 100
Time (50µs/div)
Duty Cycle (%)
VIN
(0.5V/div)
VLED
(20mV/div)
VCP
(0.5V/div)
ID
(10mA/div)
Line Response
(1X Mode, 4x19mA Load)
Time (1ms/div)
VIN
(0.5V/div)
VLED
(20mV/div)
VCP
(0.5V/div)
ID
(10mA/div)
Line Response
(1.5X Mode, 4x19mA Load)
Time (1ms/div)
VF
(20mV/div)
IIN
(10mA/div)
VCP
(20mV/div)
Load Characteristics
(1.5X Mode, 4x15mA Load)
TIme (1µs/div)
Input Current vs. Input Voltage
(4x10mA)
90
80
70
VDIODE = 3.4V
60
50
40
30
20
VDIODE = 3.0V
10
0
2.7
3.1
3.5
3.9
4.3
4.7
5.1
5.5
Input Voltage (V)
6
www.analogictech.com
3143.2009.06.1.1
3.5VF
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