AAT3103 Datasheet, PDF (7/17 Pages) Advanced Analog Technology, Inc. – 3-Channel Charge-Pump LED Driver

ChargePump^TM
Typical Characteristics
Turn-On to 1X Mode
(V_IN = 4.2V; 20mA/Dx)
EN/SET ^0V
(2V/div)
V_OUT 0V
(2V/div)
V_D1 0V
(2V/div)
I_{IN 0A}
(200mA/div)
Time (200µs/div)
LED Current Transition
(V_IN = 4.2V; 1.3mA to 20mA)
EN/SET
(2V/div) _0V
4.2V
V_OUT
(2V/div)
2.7V
V_D1
(2V/div)
I_{IN 0A}
(50mA/div)
3.2V
Time (100µs/div)
Input Current vs. Input Voltage
250
ILED = 30mA
200
ILED = 20mA
ILED = 10mA
150
VIN Rising
VIN Falling
100
50
0
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
Input Voltage (V)
PRODUCT DATASHEET
AAT3103
3-Channel Charge-Pump LED Driver
Output Ripple Waveform
(2X Mode; 20mA/Dx)
V_OUT (AC)
(20mV/div) ^0V
V_{IN 0V}
(20mV/div)
V_{D1 0V}
(20mV/div)
Time (1µs/div)
LED Current Transition
(V_IN = 4.2V; 20mA to 1.3mA)
EN/SET
(2V/div)
V_OUT
(2V/div)
0V
4.2V
3.2V
V_D1
(2V/div)
I_IN 0A
(50mA/div)
2.7V
Time (100µs/div)
3103.2008.03.1.0
www.analogictech.com
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